Temat: satellite system - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Meteorological satellites since 40 years in IMWM service
Autorzy:: Struzik, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/703199.pdf
Data publikacji:: 2008
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: satellite remote sensing
meteorological satellite system
meteorology
hydrology
Opis:: The history of satellite remote sensing applications in IMWM was presented, referring to history of remote sensing and also development and actual state of meteorological satellite system. Main areas of applications were presented together with examples of products generated from satellite data operationally received in IMWM since 40 years. The problem of data resolution from meteorological satellites fulfilling requirements of meteorology were presented on examples of processes for which were designed. Dynamical development of meteorological satellites in recent years were presented focusing on METEOSAT Second Generation and METOP satellites.
Źródło:: Nauka; 2008, 4
1231-8515
Pojawia się w:: Nauka
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: GPS w zastosowaniach geodezyjnych u progu trzeciego tysiąclecia
GPS in geodetic applications at a third thousand years threshold
Autorzy:: Góral, W.
Powiązania:: https://bibliotekanauki.pl/articles/130440.pdf
Data publikacji:: 2000
Wydawca:: Stowarzyszenie Geodetów Polskich
Tematy:: GPS
system satelitarny
geodezja
satellite system
geodesy
Opis:: Szerokie wprowadzenie technologii GPS do praktyki geodezyjnej jest wielkim osiągnięciem naukowym lat dziewięćdziesiątych XX wieku. Niejednokrotnie była ona określana jako technologia XXI w. W referacie na wstępie przedstawia się aktualny status systemu GPS w aspekcie zastosowań geodezyjnych. Omawia się przewidywaną ewolucję rozwoju segmentu satelitarnego systemu GPS, w tym propozycję włączenia do systemu dodatkowej częstotliwości. Dyskutuje się koncepcje poszerzenia systemu GPS o inne systemy satelitarne. Omawia się integrująca funkcję systemu GPS. Przewiduje się, że technologia GPS będzie nadal jedną z najdynamiczniej rozwijających się technologii geodezyjnych, które w istotny sposób będą zmieniały „filozofię” geodezji.
Źródło:: Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2000, 10; 40-1-40-4
2083-2214
2391-9477
Pojawia się w:: Archiwum Fotogrametrii, Kartografii i Teledetekcji
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: "ASG+": Project for improving Polish Multifunctional Precise Satellite Positioning System
Autorzy:: Figurski, M.
Bogusz, J.
Bosy, J.
Kontny, B.
Krankowski, A.
Wielgosz, P.
Powiązania:: https://bibliotekanauki.pl/articles/224934.pdf
Data publikacji:: 2011
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: pozycjonowanie precyzyjne
system satelitarny
precise positioning
satellite system
Źródło:: Reports on Geodesy; 2011, z. 2/91; 51-57
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Application of the autoregression algorithm for moving objects track prediction
Autorzy:: Szafranek, K.
Szpunar, R.
Powiązania:: https://bibliotekanauki.pl/articles/225198.pdf
Data publikacji:: 2008
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: sygnały satelitarne
GPS
systemy satelitarne
satellite signals
satellite system
Źródło:: Reports on Geodesy; 2008, z. 2/85; 139-150
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Signal monitoring as a part of maintenance of navigation support system in civil aviation
Autorzy:: Krzykowska, K.
Siergiejczyk, M.
Powiązania:: https://bibliotekanauki.pl/articles/393242.pdf
Data publikacji:: 2014
Wydawca:: Polskie Stowarzyszenie Telematyki Transportu
Tematy:: navigation
monitoring
satellite system
aviation
nawigacja
system satelitarny
lotnictwo
Opis:: This paper gives an overview on some chosen aspects of monitoring signal in case of system performing abilities. Nowadays, in civil aviation, there is a focus mainly on satellite systems which are often called the future of navigation. Global Navigation Satellite System (GNSS) is not able to operationally work without any support system. One of them is EGNOS (European Geostationary Navigation Overlay Service).
Źródło:: Archives of Transport System Telematics; 2014, 7, 1; 36-40
1899-8208
Pojawia się w:: Archives of Transport System Telematics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Satellite and Terrestrial Radionavigation Systems on European Inland Waterways
Autorzy:: Januszewski, J.
Powiązania:: https://bibliotekanauki.pl/articles/116145.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Inland Waterways
Inland Navigation
Satellite Radionavigation System
Terrestrial Radionavigation system
satellite navigation system
Radionavigation
satellite based augmentation system (SBAS)
EGNOS
Opis:: The usefulness for all sea users of Satellite Navigation Systems (SNS), Satellite Based Augmentation Systems (SBAS) and Automatic Identification System (AIS) is well known. The possibility, actual and future, of the utilization of all these systems on European inland waterways, GPS augmented by IALA DGPS reference stations, GPS augmented by European SBAS – EGNOS from direct Signal–in–Space (SIS) and GPS augmented by EGNOS from re–transmission over AIS, is presented in this paper. The operational systems, such as the German network IALA DGPS and DoRIS, and planned system such as GALEWAT, MARGAL, MUTIS and MARUSE are described also.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 2; 121-126
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Application of Satellite Navigation Techniques for Vessel’s Drift Determination in Piloting Areas
Autorzy:: Blokus-Roszkowska, A.
Jurdziński, M.
Powiązania:: https://bibliotekanauki.pl/articles/117034.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Satellite Navigation Technics
Global Navigation Satellite System (GNSS)
Pilot Navigation
Piloting Area
Vessel's Drift
satellite navigation system
Ship Control System
Global Positioning System GPS
Opis:: The paper deals with use the satellite navigation system for increase safety of navigation in difficult areas. There have been presented an algorithm to ship control procedure during environmental disturbances in narrow passages.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 3; 389-392
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Aktywność Instytutu Łączności na rzecz rozwoju nowoczesnych systemów i technik satelitarnych
The National Institute of Telecommunications activity for the developement of modern satellite systems and techniques
Autorzy:: Bronk, K.
Marszalec, M.
Lipka, A.
Niski, R.
Powiązania:: https://bibliotekanauki.pl/articles/317636.pdf
Data publikacji:: 2018
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: system satelitarny
nawigacja satelitarna
satelita
GNSS
VDES
metrologia czasu
satellite system
satellite navigation
satellite
metrology of time
Opis:: Od momentu przystąpienia Polski do Europejskiej Agencji Kosmicznej, zainteresowanie krajowych firm i instytucji segmentem technik i systemów satelitarnych znacząco wzrosło. W niniejszym artykule opisano działania Instytutu Łączności – Państwowego Instytutu Badawczego (IŁ) na tym polu na przestrzeni kilku ostatnich lat. Poszczególne części publikacji poświęcone są osobnym obszarom tematycznym podejmowanym przez IŁ, w tym: badaniom dostępności sygnałów GNSS na terenie Polski, standaryzacji i rozwojowi nowego systemu łączności na morzu VDES, pracom związanym z opracowaniem koncepcji polskiego satelity AIS/VDES oraz metrologii czasu.
Ever since Poland become a member of the European Space Agency, the involvement of Polish entities in the area of satellites systems and techniques has significantly increased. This article presents the recent activity of National Institute of Telecommunications (NIT) in this field. Every section of the paper is dedicated to a specific topic the NIT dealt with in the last few years, including: the measurements of the GNSS signal availability in Poland, the standardization and analysis of the novel maritime communication system VDES, feasibility study of the Polish AIS/VDES satellite and the metrology of time.
Źródło:: Telekomunikacja i Techniki Informacyjne; 2018, 1-2; 69-90
1640-1549
1899-8933
Pojawia się w:: Telekomunikacja i Techniki Informacyjne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Proposition of Ionospheric Grid in Navigation Satellite System Beidou
Autorzy:: Lamparski, J.
Powiązania:: https://bibliotekanauki.pl/articles/320913.pdf
Data publikacji:: 2017
Wydawca:: Polskie Forum Nawigacyjne
Tematy:: satellite navigation system
BeiDou system
ionospheric correction
Opis:: This study shows the way of ionospheric data usage obtained from 2 Tables using D2 NAV message Chinese BeiDou system. It was identified particular algorithms for Table’s calculation. Authors also suggested data Table 2 modification and special algorithms useful for that Table. It was given calculated examples for BeiDou system Tables as well as for new suggested system.
W artykule opisano sposób wykorzystania danych jonosferycznych zawartych w dwóch tabelach przesyłanych w depeszy D2 NAV chińskiego systemu BeiDou. Określono szczegółowe wzory umożliwiające określenie danych zawartych w tabelach. Zaproponowano modyfikację tabeli danych nr 2 oraz określono wzory pozwalające na korzystanie z tej tabeli. Podano przykłady liczbowe określenia danych w systemie tabel BeiDou oraz w systemie zaproponowanym.
Źródło:: Annual of Navigation; 2017, 24; 161-175
1640-8632
Pojawia się w:: Annual of Navigation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Usage of the global navigation satellite systems in safety and protection issues
Autorzy:: Maciuk, Kamil
Rudyk, Yuriy
Powiązania:: https://bibliotekanauki.pl/articles/2091212.pdf
Data publikacji:: 2020
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:: GNSS
GPS
protection
safety
satellite system
ochrona
bezpieczeństwo
systemy satelitarne
Opis:: Currently, global navigation satellite systems (GNSS) play a key role in the broad field of security and human life. In principle, almost every area of human activity (for example, mining, energy or construction) systems related to saving human life are introduced. Generally, satellite navigation is an indispensable element of this type of systems. In this paper, authors present basic principles of the GNSS operation and the current state of knowledge about usage of the global navigation satellite systems in the area of safety, protection and rescue issues.
Źródło:: Zeszyty Naukowe. Transport / Politechnika Śląska; 2020, 109; 93--102
0209-3324
2450-1549
Pojawia się w:: Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Zakres interpretowalności osiadań terenu za pomocą satelitarnej interferometrii radarowej (InSAR)
Autorzy:: Perski, Z.
Powiązania:: https://bibliotekanauki.pl/articles/131306.pdf
Data publikacji:: 1999
Wydawca:: Stowarzyszenie Geodetów Polskich
Tematy:: InSAR
system satelitarny
osiadanie terenu
badanie górnicze
satellite system
subsidence
mining research
Opis:: W ramach pierwszego etapu prac badawczych związanych z projektem ESA AO-3 127, dotyczącym interferometrycznych badań osiadań terenu nad wyrobiskami podziemnymi GZW, użyto 13 obrazów SAR otrzymanych z satelitów ERS-1 i ERS-2, na podstawie których wygenerowano łącznie 29 interferogramów. Dane te obejmują cztery części obszaru GZW w różnych okresach wegetacyjnych. Na podstawie analiz interferogramów i obrazów koherencji oraz ich interpretacji w oparciu o dane naziemne dokonano oceny interpretowalności danych ERS InSAR dla obszaru GZW. W artykule przedstawiono analizę jakości wybranej części opracowanych danych. Oszacowano wpływ poszczególnych czynników tak zewnętrznych (pogoda, klimat, charakter zagospodarowania powierzchni) jak i wewnętrznych systemu obróbki interferometrycznej na jakość otrzymanych wyników. Na konkretnym przykładzie przedstawiono sposoby wykorzystania danych InSAR w zakresie wykrywania osiadań.
Źródło:: Archiwum Fotogrametrii, Kartografii i Teledetekcji; 1999, 9; 191-199
2083-2214
2391-9477
Pojawia się w:: Archiwum Fotogrametrii, Kartografii i Teledetekcji
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Poland in the European network of multifunctional reference stations EUPOS
General information on the European Project EUPOS
Autorzy:: Śledziński, J.
Powiązania:: https://bibliotekanauki.pl/articles/224729.pdf
Data publikacji:: 2009
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: system pozycjonowania satelitarnego
EUPOS
satellite positioning system
Opis:: EUPOS (European Position Determination System) is a new European initiative of establishment of the multifunctional reference station system in Central and Eastern European countries. The Project EUPOS was initiated in 2002 by the Berlin Senate Department for Urban Development and European Academy of the Urban Development Berlin. The project consisted previously in establishment of multifunctional satellite reference stations in Central and Eastern Europe, but lately also some Asian countries request to join the EUPOS Project and to be admitted to EUPOS ISC as EUPOS members. Number of member countries is steadily increasing. In 2008 Moldova was intended to participate in the project and at the last conference in Tallinn in April 2009 at the EUPOS International Steering Committee Kazakhstan was admitted as the EUPOS country. So, EUPOS network will contain more than 1000 stations in the area of 19 European and Eurasian countries. Currently 19 following countries are the members of the EUPOS Project: Bosnia and Herzegovina Bulgaria, Czech Republic, Estonia, Germany, Hungary, Kazakhstan, Latvia, Lithuania, Macedonia, Moldova Montenegro, Poland, Romania, Russian Federation, Serbia, Slovakia, Slovenia and Ukraine. The number of planned stations in particular countries are given in attached table. One common project standard set is observed by all countries, however the project will include the existing or developed infrastructure in participating countries. Experiences of all participating countries in establishing and operating satellite systems will also be used. The system will be compatible with the German network SAPOS and in future will use as main signal the signal of the European system Galileo. The network of reference stations will provide services for both positioning of the geodetic control points and for navigation. Several levels of services of positioning accuracy will be offered.
Źródło:: Reports on Geodesy; 2009, z. 1/86; 7-12
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Analysis of the Effect of Time Delay on the Integrated GNSS/INS Navigation Systems
Autorzy:: Yang, C.K.
Shim, D.S.
Powiązania:: https://bibliotekanauki.pl/articles/115995.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: time delay
inertial navigation system (INS)
Global Navigation Satellite System (GNSS)
computer simulation
Opis:: The performance of tightly coupled GNSS/INS integration is known to be better than that of loosely coupled GNSS/INS integration. However, if the time synchronization error occurs between the GNSS receiver and INS(Inertial Navigation System), the situation reverses. The performance of loosely coupled GNSS/INS integration and tightly coupled GNSS/INS integration is analyzed and compared due to time synchronization error by computer simulation.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 2; 199-204
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Physical augmentation factor of precision in GNSS
Autorzy:: Ma, Lihua
Ai, Guoxiang
Kong, Ting
Powiązania:: https://bibliotekanauki.pl/articles/2174935.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Centrum Badań Kosmicznych PAN
Tematy:: satellite navigation system
positioning precision
DOP
PAFP
Opis:: The dilution of precision (DOP) in satellite navigation system provides a simple characterization of the user-satellite geometry and a quantitative assessment of the positioning constellation configuration. The essential idea of physical augmentation factor of precision (PAFP) proposed in this work, is that navigation signals are transmitted at multiple frequencies from each visible satellite in the positioning constellation, while users measure the corresponding multiple pseudoranges of satellites to achieve high precision code positioning. As the multiple pseudoranges of one satellite are measured independently by the corresponding navigation signals at different frequencies, it is reasonable to treat the measurement errors due to the satellite clock and ephemeris, the atmospheric propagation as uncorrelated, random, and identically distributed. The multipath effects and receiver noise are also processed with some empirical models. By measuring user-satellite code pseudoranges at different frequencies, the PAFP offers a scheme that produces the same effect as that of the redundant-overlapping constellation, thus equivalently improving the geometric DOP. It can effectively improve code positioning precision of satellite navigation system.
Źródło:: Artificial Satellites. Journal of Planetary Geodesy; 2022, 57, 3; 185--193
2083-6104
Pojawia się w:: Artificial Satellites. Journal of Planetary Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Development of the IANS Chain Using a Satellite System
Autorzy:: Czaplewski, K.
Powiązania:: https://bibliotekanauki.pl/articles/116843.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Interactive Navigational Structures (IANS)
navigational methods
navigation techniques
terrestrial navigation
vessel traffic service (VTS)
satellite system
satellite positioning system
differential GPS (DGPS)
Opis:: This paper presents ideas for creating and developing Interactive Navigational Structures (IANS) by using satellite systems. The author of the present paper introduced the concept of IANS into the literature in 2004 (Czaplewski, 2004). The paper presents the possibility of adapting the contemporary methods of robust estimation that are used in geodesy for the purpose of performing selected marine navigation tasks. IANS utilise modern M-estimation methods. Interactive structures can assist human beings in carrying out special tasks at sea, for example, in identifying objects at sea and on land without the need to approach them. Moreover, these structures can also be used in the process of navigation carried out by underwater vehicles or unmanned watercraft. This paper presents the mathematical methods that are essential for creating IANS. The theoretical assumptions are illustrated with an example of how IANS can be used while performing a typical navigation task. The paper closes with information about research studies which deal with the practical aspects of using this set of mathematical methods.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8 no. 4; 485-493
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 16.

Tytuł:: Poland in the European network of multifunctional reference stations EUPOS
ASG-EUPOS System - Current status and development plans
Autorzy:: Oruba, A.
Graszka, W.
Ryczywolski, M.
Wajda, S.
Powiązania:: https://bibliotekanauki.pl/articles/224726.pdf
Data publikacji:: 2009
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: system pozycjonowania satelitarnego
AGS-EUPOS
satellite positioning system
Opis:: Since June 2nd, 2008 the ASG-EUPOS (Aktywna Sieć Geodezyjna - Active Geodetic Network) augmenting system for precise satellite positioning in Poland has been running at full operability. We now approach the moment when a certain resumé can be obtained and therefore future development plans can be stated. This paper gives the reader an overview of the ASG-EUPOS system in general, describes its structure and functioning services. Also, testing and quality control procedures and some usage statistics are presented. Additionally, current status of integrating of the ASG-EUPOS system with existing control geodetic network in one optimal reference frame, so called calibration campaign, has been presented.
Źródło:: Reports on Geodesy; 2009, z. 1/86; 13-30
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 17.

Tytuł:: Testing real-time GNSS data streams for supplying the GOP Data Center
Autorzy:: Douša, J.
Bartošová, P.
Powiązania:: https://bibliotekanauki.pl/articles/225092.pdf
Data publikacji:: 2008
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: system nawigacji satelitarnej
nawigacja satelitarna
GNSS
satellite navigation system
satellite navigation
Źródło:: Reports on Geodesy; 2008, z. 1/84; 35-40
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 18.

Tytuł:: The satellite systems applications to automate navigation in the coastal zone
Autorzy:: Katenin, V.
Boykov, A.
Katenin, A.
Powiązania:: https://bibliotekanauki.pl/articles/320520.pdf
Data publikacji:: 2015
Wydawca:: Polskie Forum Nawigacyjne
Tematy:: satellite navigation system
automate navigation
coastal navigation
Opis:: The methods of automatic pilotage along a guided path are well known in the practice of navigation. However these methods have a number of drawbacks, which reduce the effectiveness of their application. It is especially important for river-sea vessel in poor visibility. Because of the large inertia of the vessel and its hydrodynamic properties that are changed by external influences, the process has unstable oscillatory nature. Therefore the vessel moves not in a straight line, but on a winding curve having the general direction that corresponds to the specified value. In this paper new method of coastal navigation with invented new devices supported with satellite navigation receiver is presented.
Metody automatycznego prowadzenia statku po zadanej trasie są powszechnie znane i szeroko stosowane w praktyce. Mają one jednak kilka niedogodności, które częściowo ograniczają ich efektywność. Jest to istotne zwłaszcza dla statków morsko-rzecznych w warunkach ograniczonej widzialności. Z powodu dużej bezwładności statku, a także szczególnych własności hydrodynamicznych, które zmieniają się pod wpływem czynników zewnętrznych, proces ten nie jest stabilny i ma charakter oscylacyjny. W efekcie statek nie porusza się po linii prostej, lecz myszkuje, utrzymując tylko w przybliżeniu założony kurs. W niniejszym artykule przedstawiono nową metodę żeglugi w strefie brzegowej wraz z propozycją specjalnej aparatury do tego celu, opartej na nawigacji satelitarnej.
Źródło:: Annual of Navigation; 2015, 22; 87-98
1640-8632
Pojawia się w:: Annual of Navigation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 19.

Tytuł:: GNSS for an Aviation Analysis Based on EUPOS and GNSS/EGNOS Collocated Stations in PWSZ CHELM
Autorzy:: Fellner, A.
Cwiklak, J.
Jafernik, H.
Trominski, P.
Zajac, J.
Banaszek, K.
Powiązania:: https://bibliotekanauki.pl/articles/117333.pdf
Data publikacji:: 2008
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
aviation
EGNOS
satellite based augmentation system (SBAS)
geographic information system (GIS)
Global Positioning System GPS
ICAO Requirements
Air Navigation
Opis:: Under the umbrella of PWSZ Chelm, taking account of future implementation of navigation using EUPOS and GNSS based on EGNOS several planned actions were carried out in the 2005-2006. The actions in particular contribute to: 1. ICAO and EGNOS requirements and coverage area (Chelm Town located near Polish-Ukrainian border is also at the east border of planned EGNOS coverage for ECAC states). 2. Preparatory activities to establishing the EUPOS station in PWSZ Chelm. Cooperation of PWSZ Chelm and ULC (Polish Aviation Regulator) in the frame of conventional NAV aids use and GNSS implementation in aviation. 3. Analysis of ICAO requirements and methods of testing SIS (Signal In Space) needed to certify GNSS in Poland for use for an aviation. 4. Preparatory activities to establishing the EGNOS SIS monitoring station based on EUROCONTROL Pegasus software and GNSS/EGNOS receiver Septentrio PolaRx2e. 5. Analysis of methods for exchange of information between EUPOS and EGNOS SIS station to initiate the application of satellite positioning systems to air navigation in Poland. The project EUPOS is a European initiative aiming at establishment of a uniform DGNSS (Differential Global Navigation Satellite System) basis infrastructures in Central and Eastern European countries including Chelm Town where PWSZ is localized playing vital role in GIS/GNSS implementation in the region and Polish aviation.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 4; 351-356
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 20.

Tytuł:: An assessment of the character and usefulness of the information available on the internet about state-owned satellite navigation and satellite-based augmentation systems
Autorzy:: Januszewski, J.
Powiązania:: https://bibliotekanauki.pl/articles/135444.pdf
Data publikacji:: 2015
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: satellite navigation system
satellite based augmentation system (SBAS)
internet
availability
character of information
usefulness of information
Opis:: To date, a ship’s position can generally be obtained from functional satellite navigation systems (SNS), such as Global Position Systems (GPS and GLONASS), and Satellite-Based Augmentation Systems (SBAS), such as (European Geostationary Navigation Overlay Service (EGNOS), GPS-Aided Geo Augmented Navigation system (GAGAN), MTSAT Satellite Augmentation System (MSAS) and Wide Area Augmentation System (WAAS). Sometimes these systems are collectively called Global Navigation Satellite Systems (GNSS). Two more SNS, Galileo and BeiDou, one more SBAS, System for Differential Corrections and Monitoring (SDCM), and new regional systems, such as Quasi-Zenith Satellite System (QZSS) in Japan and Indian Regional Navigation Satellite System (IRNSS) in India, are also under construction. Information about all of these 11 systems is available on the internet. The number of links and the type of the information obtained from two search engines, Google and Bing, for the different keywords concerning each system are shown in the paper. Additionally, the analysis of the character and usefulness of the information placed on the pages of governmental organizations and institutions administering the above-mentioned systems, manufacturers of the satellites, receivers and different kinds of the institutional users is also provided.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 44 (116); 123-127
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 21.

Tytuł:: Global Navigation Satellite Systems – Perspectives on Development and Threats to System Operation
Autorzy:: Czaplewski, K.
Goward, D.
Powiązania:: https://bibliotekanauki.pl/articles/117128.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
Global Positioning System (GPS)
satellite navigation
satellite navigation and timing technology
e-Loran
GLONASS
BeiDo
EGNOS
Opis:: The rapid development of satellite navigation and timing technologies and the broad availability of user equipment and applications has dramatically changed the world over the last 20 years. It took 38 years from the launch of the world’s first artificial satellite, Sputnik 1, (October 4, 1957) to the day NAVSTAR GPS became fully operational (July 17, 1995). In the next 20 years user equipment became widely available at the consumer level, and 10 global and regional satellite systems were partially or fully deployed. These highly precise signals provided free to the user have been incorporated by clever engineers into virtually every technology. At the same time interference with these signals (spoofing and jamming) have become a significant day to day problem in many societies and pose a significant threat to critical infrastructure. This paper provides information on the current status and development of navigation satellite systems based on data provided by the systems' administrators. It also provides information on Loran/eLoran, a system which many nations have selected as a complement and backup for satellite navigation systems.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 2; 183-192
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 22.

Tytuł:: Architecture of positioning and tracking solutions for maritime applications
Autorzy:: Ilcev, S.D.
Powiązania:: https://bibliotekanauki.pl/articles/2211830.pdf
Data publikacji:: 2022
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: ships tracking
Global Navigation Satellite System
satellite asset tracking
radio frequency
satellite transponder
tracking
positioning
global ship tracking
Opis:: This paper discusses the current and new satellite transponders for global tracking and detecting of oceangoing ships, assets, crew, passengers and any moving objects at sea for enhanced vessels traffic control and management. These transponders are able to monitor all maritime assets and to improve safety, security of movements and collision avoidance, especially during very bad weather conditions and visibility. By deployment of the Global Navigation Satellite System (GNSS) in integration with Inmarsat, Iridium and other satellite systems in one unit with antenna, it is possible to provide reliable positioning and tracking solutions for civilian maritime, other mobiles and personnel at different Radio Frequency (RF) bands. The existing and forthcoming space and ground segment for positioning and tracking solutions as a modern Satellite Asset Tracking (SAT) onboard ships, and other relating systems are discussed and benefits of these new technologies and solution for improved positioning and tracking are explored.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2022, 16, 3; 481--489
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 23.

Tytuł:: Analysis of positioning methods using Global Navigation Satellite Systems (GNSS) in Polish State Railways (PKP)
Autorzy:: Specht, Mariusz
Szmagliński, Jacek
Specht, Cezary
Koc, Władysław
Wilk, Andrzej
Czaplewski, Krzysztof
Karwowski, Krzysztof
Dąbrowski, Paweł S.
Chrostowski, Piotr
Grulkowski, Sławomir
Powiązania:: https://bibliotekanauki.pl/articles/906101.pdf
Data publikacji:: 2020
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: rail transport
global navigation satellite system (GNSS)
satellite receiver
European Train Control System (ETCS)
train positioning system
Polish State Railways (PKP)
Opis:: Each year, global navigation satellite systems (GNSS) improve their accuracy, availability, continuity, integrity, and reliability. Due to these continual improvements, the systems are increasingly used in various modes of transport, including rail transport, the subject of this publication. GNSS are used for rail passenger information, rail traffic management, and rail traffic control. These applications differ in the positioning requirements that satellite navigation systems must meet. This article presents the methods and systems of rolling stock location and tracking using the Polish State Railways (PKP) as an example. The information on the equipment used for train positioning is not specified anywhere, hence they may differ, even for the same multiple units travelling in different parts of the country. In addition, the publication presents the progress of the European Train Control System (ETCS) implementation by the PKP.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2020, 62 (134); 26-35
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 24.

Tytuł:: Korean WA-DGNSS User Segment Software Design
Autorzy:: Shah, S. T.
Choi, W.S.
Han, W.Y.
Yun, H.
Kee, C.
Powiązania:: https://bibliotekanauki.pl/articles/116066.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: global navigation satellite system (GNSS)
Global Positioning System GPS
User Segment
GPS Data Processing Classes
Opis:: Korean WA‐DGNSS is a large scale research project funded by Ministry of Land, Transport and Maritime Affairs Korea. It aims to augment the Global Navigation Satellite System by broadcasting additional signals from geostationary satellites and providing differential correction messages and integrity data for the GNSS satellites. The project is being carried out by a consortium of universities and research institutes. The research team at Electronics and Telecommunications Research Institute is involved in design and development of data processing softwares for wide area reference station and user segment. This paper focuses on user segment software design. Korean WA‐DGNSS user segment software is designed to perform several functions such as calculation of pseudorange, ionosphere and troposphere delays, application of fast and slow correction messages, and data verification. It is based on a layered architecture that provides a model to develop flexible and reusable software and is divided into several independent, interchangeable and reusable components to reduce complexity and maintenance cost. The current version is designed to collect and process GPS and WADGNSS data however it is flexible to accommodate future GNSS systems such as GLONASS and Galileo.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 1; 69-74
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 25.

Tytuł:: Estimation of Flight Path Deviations for SAR Radar Installed on UAV
Autorzy:: Łabowski, M.
Kaniewski, P.
Konatowski, S.
Powiązania:: https://bibliotekanauki.pl/articles/221533.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Unmanned Aerial Vehicle
Synthetic Aperture Radar
inertial measurement unit
Global Navigation Satellite System
Opis:: The paper presents a method of calculation of position deviations from a theoretical, nominally rectilinear trajectory for a SAR imaging system installed on board of UAV. The UAV on-board system consists of a radar sensor, an antenna system, a SAR processor and a navigation system. The main task of the navigation part is to determine the vector of differences between the theoretical and the measured trajectories of UAV center of gravity. The paper includes chosen results of experiments obtained during ground and flight tests.
Źródło:: Metrology and Measurement Systems; 2016, 23, 3; 383-391
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 26.

Tytuł:: Flexible Software Design for Korean WA-DGNSS Reference Station
Autorzy:: Choi, W.S.
Chhattan, S.S.
Kye, J.E.
Han, W.Y.
Yun, H.
Kee, C.
Powiązania:: https://bibliotekanauki.pl/articles/116770.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
Flexible Software Design
Wide area Reference Station (WRS)
Opis:: In this paper, we describe the software design results of WA‐DGNSS reference station that will be constructed in Korea in the near future. Software design of the WRS (Wide area Reference Station) is carried out by applying object oriented software methodology in order to provide flexibilities: easy of model change (namely ionospheric delay model etc) and system addition (Galileo, GLONASS in addition to GPS etc). Software design results include the use case diagrams for the functions to be executed, the architecture diagram showing components and their relationships, the activity diagrams of behaviors and models among them, and class diagrams describing the attribute and operation.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 1; 75-78
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 27.

Tytuł:: SBAS/EGNOS enabled devices in maritime
Autorzy:: López, M.
Anton, V.
Powiązania:: https://bibliotekanauki.pl/articles/117186.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: accuracy
EGNOS-Enabled Navigation
AIS transponders
SGNSS
position
Navigation and Timing (PNT)
Satellite Based Augmentation System (SBAS)
EGNOS
Global Navigation Satellite System (GNSS)
Opis:: Nowadays, it is a fact that Global Navigation Satellite Systems (GNSS) have become the primary means of obtaining Position, Navigation and Timing (PNT) information at sea. Most of the ships in the world are equipped with GNSS receivers. And currently these users take advantage of different augmentation systems such as DGNSS or SBAS/EGNOS, as they provide an adequate answer, especially in terms of accuracy and integrity. To take advantage of this improved accuracy, direct access to EGNOS in vessels can be achieved through EGNOS-enabled navigation receivers and EGNOS-enabled AIS transponders. Therefore, the natural question is: Are those GNSS receivers SBAS (EGNOS) enabled? In most cases they are; SBAS is being used. This paper provides an analysis of the number of onboard devices, mainly devoted to navigation purposes and AIS transponders, which are SBAS compatible.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 1; 23-27
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 28.

Tytuł:: EGNOS Status and Performance in the Context of Marine Navigation Requirements
Autorzy:: Cydejko, J.
Powiązania:: https://bibliotekanauki.pl/articles/116957.pdf
Data publikacji:: 2008
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
EGNOS
Marine Navigation Requirements
positioning system
Satellite Positioning
Maritime Transport Requirements
Positioning Performance
Polish Coast
Opis:: The current status of EGNOS (December 2006) is described as Initial Operations Phase and the EGNOS Open Service is just about to be formally declared as available for non-safety of life service. In meanwhile the EGNOS Signal in Space is provided almost in its nominal level and delivering, when available, the nominal system performance. New positioning technologies, such as EGNOS in Europe, create a new quality in marine navigation and bring further improvement of the maritime transport safety. It may be expected that very soon EGNOS will find significant interest among the maritime community serving as the augmentation system in the maritime transport applications of GNSS. The paper discusses the EGNOS status and the expected EGNOS performance in the context of marine navigation requirements. The system performance analysis is backed with the study of the various field tests results where the EGNOS positioning performance was verified by author in the experimental way.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 3; 229-234
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 29.

Tytuł:: Możliwości wykorzystania technik satelitarnych w produkcji rolniczej
Possibilities of the use of modern satellite techniques in agriculture
Autorzy:: Ciećko, Adam
Brodziński, Zbigniew
Powiązania:: https://bibliotekanauki.pl/articles/2232285.pdf
Data publikacji:: 2010-07-28
Wydawca:: Centrum Doradztwa Rolniczego w Brwinowie. Oddział w Poznaniu
Tematy:: nowoczesne techniki satelitarne
GNSS (Globalny System Nawigacji Satelitarnej)
rolnictwo precyzyjne
modern satellite techniques
GNSS (Global Navigation Satellite System)
precision agriculture
Opis:: W artykule przedstawiono możliwości wykorzystania nowoczesnych technik satelitarnych w produkcji rolniczej. Wśród kluczowych elementów precyzyjnego rolnictwa zidentyfikowano: – informację o pozycji obiektów (maszyn, pojazdów, zwierząt i in.), – pomiar powierzchni działek rolnych, – system jazdy równoległej to system nawigacji ciągników i maszyn rolniczych, który zapewnia uzyskanie równoległych torów jazdy, – mapy zasobności i zmienności glebowej przedstawiające przestrzenne rozmieszczenie czynników wpływających na urodzajność gleby, – mapy aplikacyjne umożliwiające stosowanie technologii zmiennego dawkowania.
Paper presents new possibilities of the use of modern satellite techniques in agriculture. Several key elements of precision agriculture was deffned and described: – information about position of objects (machines, vehicles, animals, etc.), – parcel area measurement, – parallel driving system as a navigation tool for tractors and agriculture machines, – soil maps showing distribution of soil types and/or soil properties (physical, chemical, biological, and fertility properties), – application maps which practically allow to use variable rate application (VRA) technology.
Źródło:: Zagadnienia Doradztwa Rolniczego; 2010, 60, 1-2; 113-121
1232-3578
2719-8901
Pojawia się w:: Zagadnienia Doradztwa Rolniczego
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 30.

Tytuł:: GNSS for an Aviation
Autorzy:: Grzegorzewski, M.
Cwiklak, J.
Jafernik, H.
Fellner, A.
Powiązania:: https://bibliotekanauki.pl/articles/117124.pdf
Data publikacji:: 2008
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
Air Navigation
Aviation, Global Positioning System (GPS)
Aircraft-Based Augmentation System (ABAS)
satellite based augmentation system (SBAS)
Ground-Based Augmentation System (GBAS)
EGNOS
Opis:: In Polish aviation on-board GPS units are used for enroute procedures mainly. The use of GNSS for approach and landing procedures requires overcoming a lot of obstructions, including both organizational and technical ones. The paper presents information connecting with GNSS implementation in aviation.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 4; 345-350
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 31.

Tytuł:: Implementation of the multifunctional communication system for RIS center supporting Inland Navigation
Autorzy:: Lisaj, A.
Powiązania:: https://bibliotekanauki.pl/articles/2063977.pdf
Data publikacji:: 2021
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: River Information System
Iridium Satellite System
RIS Center
Multifunctional Communication System
GMDSS
DSC Communication
Search and Rescue
Opis:: The article presents the feasibility of implementation integrated digital and analog radio-communications systems in maritime and inland navigation at the RIS Center. Structure of the date transmission in the RIS system was characterized. Integration of the Iridium Satellite System into a Multifunctional Communication System for the RIS Centre was presented. The integrating DSC VHF and DSC MF GMDSS subsystems with Multifunctional Communication System was presented. The possibilities of integrating The LT- 3100S Lars Thrane module for Multifunctional Communication System. was presented. The architecture of Multifunctional Communication Systems implementing distress communication procedures in cooperation between RIS Center and Search and Rescue Centers was presented.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 3; 605--608
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 32.

Tytuł:: Global satellite navigation systems at high latitudes, visibility and geometry
Autorzy:: Januszewski, J.
Powiązania:: https://bibliotekanauki.pl/articles/320934.pdf
Data publikacji:: 2016
Wydawca:: Polskie Forum Nawigacyjne
Tematy:: satellite navigation system
visibility of satellites
geometry of the system
Opis:: Since few years the significance of the navigation at high latitudes (60° and more), increases incessantly, e.g. northern passages between Atlantic and Pacific Waters. In these regions the user’s position can be obtained mainly from global satellite navigation systems (SNS). Nowadays (September 2016) two systems, American GPS and Russian GLONASS, are fully operational, two next, Galileo in Europe and BeiDou in China, are under construction. As the error of user’s position obtained from these systems depends on geometry factor DOP (Dilution Of Precision) among other things the knowledge of the number of satellites visible by this user above given masking elevation angle H_min and the distributions of DOP coefficient values, GDOP in particular, is very important. The lowest and the greatest number of satellites visible in open area by the user at high latitudes for different H_min, the percentage of satellites visible above angle H, distributions of satellites azimuths and GDOP coefficient values for different Hmin for all these four SNSs at different user’s latitudes (beginning from 60°) and other distributions are presented in the paper. All calculations were made for constellation of BeiDou 27 MEO satellites, Galileo 24 satellites, GLONASS 24 and GPS 31 satellites.
Od kilku lat znaczenie nawigacji na dużych szerokościach geograficznych (60° i wyższych) wzrasta nieprzerwanie, np. przejście północne łączące Atlantyk i Ocean Spokojny. W tych rejonach współrzędne użytkownika mogą zostać określone głównie za pomocą globalnych nawigacyjnych systemów satelitarnych (NSS). Obecnie (sierpień 2016) w pełni operacyjne są dwa systemy — amerykański GPS i rosyjski GLONASS, dwa kolejne są w budowie — Galileo w Europie i BeiDou w Chinach. Z uwagi na to, że błąd pozycji użytkownika określonej za pomocą tych systemów zależy również od współczynnika geometrycznego DOP, bardzo istotna jest znajomość liczby satelitów widocznych przez użytkownika powyżej przyjętej wysokości H_min oraz rozkładu współczynnika DOP, w szczególności GDOP. W artykule omówiono najmniejszą i największą liczbę satelitów widocznych powyżej danej H_min, procent satelitów widocznych powyżej danej H, procentowy rozkład azymutów satelitów oraz współczynnika GDOP na różnych szerokościach dla wszystkich czterech globalnych NSS. Obliczenia zostały zrealizowane przy założeniu, że system BeiDou liczy 27 satelitów, system Galileo 24 satelity, GLONASS 24 satelity, GPS zaś 31 satelitów.
Źródło:: Annual of Navigation; 2016, 23; 89-102
1640-8632
Pojawia się w:: Annual of Navigation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 33.

Tytuł:: Monitoring of stability of ASG-EUPOS network coordinates
Autorzy:: Figurski, M.
Szafranek, K.
Wrona, M.
Powiązania:: https://bibliotekanauki.pl/articles/224724.pdf
Data publikacji:: 2009
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: system pozycjonowania satelitarnego
stacje referencyjne
satellite positioning system
reference stations
Opis:: ASG-EUPOS is Polish GNSS (Global Navigation Satellite System) Ground Based Augmentation System. The name stands for Active Geodetic Network European Position Determination System. It is multifunctional system of precise positioning consisting of more than 100 GNSS reference stations, which constitutes densification of global IGS (International GNSS Service) and regional EPN (European Permanent Network) GNSS (Global Navigation Satellite System) networks. Data collected on those stations are reference for many surveys (real time or postprocessing corrections - differential technology). ASGEUPOS will fulfill a role of main national geodetic frame and will enable conservation of ETRF (European Terrestrial Reference Frame) in Poland. That is one of the reasons why the system activity has to be monitored and controlled.
Źródło:: Reports on Geodesy; 2009, z. 1/86; 31-41
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 34.

Tytuł:: Comparative analysis of unmanned aerial vehicles used in photogrammetric surveys
Autorzy:: Specht, M.
Widźgowski, S.
Stateczny, A.
Specht, C.
Lewicka, O.
Powiązania:: https://bibliotekanauki.pl/articles/24201468.pdf
Data publikacji:: 2023
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: unmanned aerial vehicle
unmanned vehicles
photogrammetry
drone
inertial navigation system
hydrography
Global Navigation Satellite System
LiDAR
Opis:: There are many manufacturers on the market offering various types of Unmanned Aerial Vehicles (UAV). The multitude of drones available on the market means that the choice of a UAV for a specific application appears to be a decision problem to be solved. The aim of this article is a comparative analysis of drones used in photogrammetric surveys. The criteria for evaluating the UAVs were: availability and product support, payload (min. 5 kg), price (PLN 100,000), as well as space available for measurement modules. These are the requirements that must be met for the implementation of the INNOBAT project, the aim of which is to develop an integrated system using autonomous unmanned aerial and surface vehicles, intended for bathymetric monitoring in the coastal zone. The comparative analysis of drones was based on 27 companies producing UAV. Based on the analysis, 6 drones that met the project requirements were selected. They were: Aurelia X6 Pro, Aurelia X8 Standard LE, DroneHexa AG, FOX-C8 XT, Hercules 10 and Zoe X4. Selected UAVs differ from each other, among others, in the number of rotors, flight duration and resistance to weather conditions. Individual characteristics of drones may have a different rank depending on their application, therefore the selection of UAVs should be made after prioritisation criteria of a given project.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 2; 433--443
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 35.

Tytuł:: Su-22 and MiG-29 aircraft as air-launch platforms for space rockets
Samoloty Su-22 oraz MiG-29 jako platformy do wynoszenia rakiet z ładunkiem kosmicznym
Autorzy:: Olejnik, Aleksander
Zalewski, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/1857106.pdf
Data publikacji:: 2020
Wydawca:: Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:: air-launch satellite system
air-launch platform
microsatellite
zestaw lotniczo-rakietowy
samolot-platforma
mikrosatelita
Opis:: The work is an announcement on the current state of the research project implementation. The study presents the results of an analysis of the project’s research area. On this basis, the two-stage micro-satellite launch system was selected. The system, a space-kit is based on an adopted combat aircraft carrying a satellite-laden rocket that is fired at the maximum altitude. As a potential transport platform, two withdrawn supersonic aircraft were selected: the MiG-29 and the Su-22. A dedicated mission-laden rocket is to be carried under the fuselage. Preliminary analyses have shown that the aircraft indicated with the proposed mission profile will successfully carry out the task of launching a hypothetical rocket with a payload of at least 10 kg into low earth orbit. This confirmed the merits of the basic thesis of the research project. For the analysis of the aeromechanical properties of the kit, both 3D digital models for computer simulations and physical models scaled for tunnel tests were developed. Laser scanners were used to map aircraft geometry, and measurements were made on Su-22 and MiG-29 aircraft in the aviation laboratory of the Military University of Technology. Using three-dimensional scaled models generated in a CAD environment, physical solid models were printed for wind tunnel investigations. Preliminary computer simulations conducted in the ANSYS Fluent system did not point out any negative impact of the rocket on aerodynamic characteristics and stability of the both carrier aircraft.
Praca jest komunikatem dotyczącym stanu realizacji projektu badawczego. W opracowaniu zaprezentowano wyniki analizy obszaru badawczego projektu. Na tej podstawie dokonano wyboru platformy-nosiciela rakiety kosmicznej. Dwustopniowy system do wynoszenia mikrosatelity bazuje na zaadaptowanym samolocie bojowym przenoszącym rakietę z ładunkiem satelitarnym, która odstrzeliwana jest na maksymalnie osiąganej wysokości. Jako potencjalną platformę transportową wytypowano dwa wycofywane ze służby bojowe samoloty naddźwiękowe: MiG-29 oraz Su-22. Wybrana rakieta z ładunkiem misyjnym ma być przenoszona pod kadłubem. Wstępne analizy wykazały, że wskazane samoloty przy zaproponowanym profilu misji z powodzeniem wykonają zadanie wyniesienia hipotetycznej rakiety z ładunkiem użytecznym o masie co najmniej 10 kg na niską orbitę okołoziemską. Potwierdziło to zasadność podstawowej tezy projektu badawczego. Dla potrzeb analizy własności aeromechanicznych zestawu opracowano zarówno modele cyfrowe 3D do symulacji komputerowych, jak i fizyczne modele skalowane do badań tunelowych. Do odwzorowania geometrii samolotów wykorzystano skanery laserowe, a pomiary wykonano na egzemplarzach samolotów Su-22 oraz MiG-29 znajdujących się w zasobach bazy laboratoryjnej Instytutu Techniki Lotniczej WML WAT. Wykorzystując trójwymiarowe modele skalowane wygenerowane w środowisku CAD, wydrukowano fizyczne modele bryłowe do badań w tunelu aerodynamicznym. Wstępne symulacje komputerowe przeprowadzone w systemie ANSYS Fluent nie wykazały negatywnego wpływu rakiety kosmicznej na charakterystyki aerodynamiczne i stateczność samolotu-nosiciela.
Źródło:: Biuletyn Wojskowej Akademii Technicznej; 2020, 69, 3; 89-103
1234-5865
Pojawia się w:: Biuletyn Wojskowej Akademii Technicznej
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 36.

Tytuł:: The implementation of the EGNOS system to APV
Autorzy:: Fellner, A.
Banaszek, K.
Trómiński, P.
Powiązania:: https://bibliotekanauki.pl/articles/225090.pdf
Data publikacji:: 2008
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: system nawigacji satelitarnej
nawigacja satelitarna
ruch lotniczy
satellite navigation system
satellite navigation
air traffic
Źródło:: Reports on Geodesy; 2008, z. 1/84; 31-34
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 37.

Tytuł:: GPS/GNSS spoofing and the real-time single-antenna-based spoofing detection system
Autorzy:: Ochin, E.
Powiązania:: https://bibliotekanauki.pl/articles/135406.pdf
Data publikacji:: 2017
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: Global Navigation Satellite System
Global Positioning System
anti-terrorism
anti-spoofing
transport safety
spoofer
spoofing detection algorithm
Opis:: The idea of C/A codes GPS/GNSS Spoofing (Substitution), or the ability to mislead a satellite navigation receiver into establishing a position or time fix which is incorrect, has been gaining attention as spoofing has become more sophisticated. Various techniques have been proposed to detect if a receiver is being spoofed – with varying degrees of success and computational complexity. If the jammer signals are sufficiently plausible then the GNSS receiver may not realize it has been duped. There are various means of detecting spoofing activity and hence providing effective mitigation methods. In this paper, a novel signal processing method applicable to a single antenna handset receiver for spoofing detection has been described. Mathematical models and algorithms have been developed to solve the problems of satellite navigation safety. What has been considered in the paper is a spoofing detection algorithm based on the analysis of a civil satellite signal generated by mobile C/A GPS/GNSS single-antenna receivers. The work has also served to refine the civilian spoofing threat assessment by demonstrating the challenges involved in mounting a spoofing attack.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2017, 52 (124); 145-153
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 38.

Tytuł:: Testing and measuring GNSS parameters
Autorzy:: Novak, A.
Novak Sedlackova, A.
Nemec, V.
Powiązania:: https://bibliotekanauki.pl/articles/249926.pdf
Data publikacji:: 2013
Wydawca:: Instytut Naukowo-Wydawniczy TTS
Tematy:: globalny system nawigacji satelitarnej
GNSS
procedury lotów
parametry lotu
Global Navigation Satellite System
flight procedures
flight parameters
Opis:: This paper describes the consistent preview of the testing and measuring GNSS parameters. The Measuring and testing GNSS requires three essential components: aircraft with flight crews, procedures or navigation aid requiring validation, and a Flight Inspection System (FIS). A Global Navigation Satellite System (GNSS), as a source of position information available worldwide is considered as a key enabler to future navigation.
Źródło:: TTS Technika Transportu Szynowego; 2013, 10; 1225-1232, CD
1232-3829
2543-5728
Pojawia się w:: TTS Technika Transportu Szynowego
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 39.

Tytuł:: Modelling GPS positioning performance in Northwest Passage during extreme space weather conditions
Autorzy:: Špoljar, D.
Jukić, O.
Sikirica, N.
Lenac, K.
Filjar, R.
Powiązania:: https://bibliotekanauki.pl/articles/1841553.pdf
Data publikacji:: 2021
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Positioning System
Northwest Passage
Global Navigation Satellite System
Software Defined Radio (SDR)
GNSS SDR Receiver
GPS Position
Opis:: New shipping routes are emerging as a result of iceberg melting in polar regions, allowing for more efficient transport of people and goods. Opening of the Northwest Passage, the maritime route connecting Pacific Ocean with Atlantic Ocean through Arctic region, is considered such a development. The increasing transport exploitation of the Northwest Passage requires the quality assessment of maritime navigation aids for compliance with the established requirements. Here we contribute to the subject with addressing the polar commercial-grade GPS positioning performance in the Northwest Passage in the extreme positioning environment conditions during the massive 2003 space weather storm, a space weather event similar to the Carrington Storm of 1859, the largest space weather event recorded. The GPS positioning environment in the Northwest Passage during the Carrington-like storm in 2003 was reconstructed through the GNSS SDR receiver-post processing of the experimental GPS observations. The raw GPS dual-frequency pseudoranges and navigation messages were collected at the International GNSS Service (IGS) reference station at Ulukhaktok, Victoria Island, Canada. Pseudorange processing and GPS position estimation were performed in three scenarios of pre-mitigation of the ionospheric effects, known as the single major contributor GPS positioning error: (i) no corrections applied, (ii) Klobuchar-based corrected GPS positioning, and (iii) dual-frequency corrected GPS positioning. Resulting GPS positioning error vectors were derived as positioning error residuals from the known reference station position. Statistical properties of the northing, easting, and vertical components of the GPS positioning error vector were analyzed with a software developed in the R environment for statistical computing to select suitable methods for the GPS positioning error prediction model development. The analysis also identified the most suitable theoretical fit for experimental statistical distributions to assist the model development. Finally, two competitive GPS positioning error prediction models were developed, based on the exponential smoothing (reference) and the generalized regression neural networks (GRNN) (alternative) methods. Their properties were assessed to recommend their use as mitigation methods for adverse massive space weather effects in polar regions.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 1; 165-169
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 40.

Tytuł:: Model of the signal of the Galileo Satellite Navigation System
Autorzy:: Džunda, M.
Čikovský, S.
Melniková, L.
Powiązania:: https://bibliotekanauki.pl/articles/24201440.pdf
Data publikacji:: 2023
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System
navigation system
Galileo
E1 signal
interference
chaotic impulse interference
narrowband interference
simulation method
Opis:: This article presents an analysis of the Galileo E1 signal and its sensitivity to different types of interference. The research involved modeling white noise, chaotic impulse interference, and narrowband interference and the effects of these interfering signals on the E1 signal. Based on the available information, spectral structures were created for the mentioned types of interference, and subsequently, these interferences were integrated into the E1 signal in the Matlab program environment. A Kallman filter was used to filter out white noise from the additive mixture of the E1 signal and white noise. The research aimed to analyze the influence of white noise, chaotic impulse interference, and narrowband interference on the spectral power density of the E1 signal. The results of this work can be used in the design of robust receivers and signal structures capable of withstanding these types of interference.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 51--59
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 41.

Tytuł:: Mobile Radio Beacons in Coastal Reserved Navigation System for Ships
Autorzy:: Kelner, J. M.
Ziółkowski, C.
Powiązania:: https://bibliotekanauki.pl/articles/1841623.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: radio beacons
coastal reserved navigation system
navigation system
signal Doppler frequency
Global Navigation Satellite System
Terrestrial Navigation System
Radio Navigation System
Opis:: At the turn of the 20th and 21st centuries, Global Navigation Satellite Systems (GNSSs) dominated navigation in air, sea, and land. Then, medium-range and long-range terrestrial navigation systems (TNSs) ceased to be developed. However, with the development of GNSS jamming and spoofing techniques, the TNSs are being re-developed, such as the Enhanced Loran. The Polish Ministry of Defense plans to develop and implement a medium-range backup navigation system for the Polish Navy which will operate in the Baltic coastal zone. This plan is a part of the global trend. This paper presents the concept of a reserve TNS (RNS) that is based on the signal Doppler frequency (SDF) location method. In 2016, the concept of the RNS, which is based on stationary radio beacons located on coastal lighthouses, has been presented. From the military viewpoint, the use of the mobile radio beacons, which may change their location, is more justified. Therefore, the paper presents an idea of using the mobile beacons for this purpose. In this paper, effectiveness of the mobile RNS is shown based on simulation studies.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 3; 603-610
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 42.

Tytuł:: Galileo Integrity Concept and its Applications to the Maritime Sector
Autorzy:: Hernández, C.
Catalán, C.
Martínez, M. A.
Powiązania:: https://bibliotekanauki.pl/articles/116833.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
Galileo
Maritime Sector
Signal-In-Space Accuracy (SISA)
marine navigation
satellite based augmentation system (SBAS)
Galileo Integrity
Signal In Space Monitoring Accuracy (SISMA)
Opis:: Galileo is the European Global Navigation Satellite System, under civilian control. Galileo will provide their users with highly accurate global positioning services and their associated integrity information. The main objective of this article is to explain the basis of the Galileo integrity concept, which is fundamental for safety-critical applications such as maritime navigation. A review of the expected performance that will be achieved has been also included.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 3; 287-291
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 43.

Tytuł:: Estimation of UAV Position with Use of Smoothing Algorithms
Autorzy:: Kaniewski, P.
Gil, R.
Konatowski, S.
Powiązania:: https://bibliotekanauki.pl/articles/221380.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Unmanned Aerial Vehicle
Inertial Navigation System
Global Navigation Satellite System
Integrated Navigation System
Synthetic Aperture Radar
Kalman Filter
smoothing algorithm
Opis:: The paper presents methods of on-line and off-line estimation of UAV position on the basis of measurements from its integrated navigation system. The navigation system installed on board UAV contains an INS and a GNSS receiver. The UAV position, as well as its velocity and orientation are estimated with the use of smoothing algorithms. For off-line estimation, a fixed-interval smoothing algorithm has been applied. On-line estimation has been accomplished with the use of a fixed-lag smoothing algorithm. The paper includes chosen results of simulations demonstrating improvements of accuracy of UAV position estimation with the use of smoothing algorithms in comparison with the use of a Kalman filter.
Źródło:: Metrology and Measurement Systems; 2017, 24, 1; 127-142
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 44.

Tytuł:: Overview of broadband information systems architecture for crisis management
Przegląd architektury szerokopasmowych systemów informacyjnych do celów zarządzania kryzysowego
Autorzy:: Wilk-Jakubowski, Jacek
Powiązania:: https://bibliotekanauki.pl/articles/407731.pdf
Data publikacji:: 2020
Wydawca:: Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:: information systems engineering
web service
satellite system
crisis management
VSAT
inżynieria systemów informacyjnych
usługa internetowa
system satelitarny
zarządzanie kryzysowe
Opis:: Many risks as a result of accidents, catastrophes and natural disasters can contribute to crisis situation, which according to the definition means a set of circumstances, both external and internal, that affect a given system through changes. Crisis situations are usually the result of natural disasters. Where such phenomena occur, it is important to ensure communication both at regional and national level. This is particularly important in areas affected by disasters caused by force majeure, such as earthquakes. The main aim of the article is to provide an overview of the architecture of contemporary information systems including satellite links, in order to present information on the potential possibilities of their use in the case of crisis situations.
Wiele zagrożeń wynikających z wypadków, katastrof czy klęsk żywiołowych może przyczynić się do powstania sytuacji kryzysowych, przez które zgodnie z definicją rozumie się zbiór okoliczności, zarówno zewnętrznych, jak i wewnętrznych, mających wpływ na dany system poprzez zaistniałe zmiany. Sytuacje kryzysowe są zazwyczaj wynikiem klęsk żywiołowych. W przypadku wystąpienia takich zjawisk ważne jest zapewnienie odpowiedniej komunikacji zarówno na poziomie regionalnym, jak i krajowym. Jest to szczególnie istotne na obszarach dotkniętych klęskami żywiołowymi spowodowanymi siłą wyższą, takimi jak trzęsienia ziemi. Głównym celem niniejszego artykułu jest przegląd architektury współczesnych systemów informacyjnych, z uwzględnieniem sieci satelitarnych, w celu przedstawienia informacji na temat potencjalnych możliwości ich wykorzystania na potrzeby komunikacji w sytuacjach kryzysowych.
Źródło:: Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2020, 10, 2; 20-23
2083-0157
2391-6761
Pojawia się w:: Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 45.

Tytuł:: Key points of the modernized GMDSS system
Autorzy:: Korcz, K.
Powiązania:: https://bibliotekanauki.pl/articles/24201457.pdf
Data publikacji:: 2023
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: e-navigation solutions
GMDSS modernization
GMDSS equipment
navigational data
VHF data exchange system
IRIDIUM satellite system
world radiocommunication conference
Opis:: The article presents the reasons and the entire process of work on the modernization of the GMDSS system. The main legal and technical aspects of the modernization of the GMDSS system were discussed as well. New devices and systems of the modernized GMDSS system were described. On the basis of the key points of the modernized GMDSS, an attempt was made to evaluate the entire project.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 139--146
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 46.

Tytuł:: Multipurpose Remotely Piloted Aircraft System Integrated Navigation System Development and Testing
Autorzy:: Kharchenko, Volodymyr
Ilnytska, Svitlana
Powiązania:: https://bibliotekanauki.pl/articles/504411.pdf
Data publikacji:: 2013
Wydawca:: Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:: remotely piloted aircraft system (RPAS) integrated navigation system
strapped down inertial navigation system (SINS)
global navigation satellite system (GNSS)
MEMS sensor, logistic
Opis:: The paper presents development of prototype of integrated inertial-satellite navigation system that contains 3-axis accelerometers, gyros, magnetometers, barometric altimeter and GNSS (Global Navigation Satellite System) receiver. Navigation system testing procedure by means of flight at airdrome at small remotely piloted aircraft system (RPAS) is described, and data processing details with results are submitted. These results received from the data post-processing had approved the efficiency of integrated navigation system functioning in normal navigation mode, i.e. during availability of GNSS measurements. It has been shown as well that after approximately 10 s of autonomous MEMS inertial navigation system (INS) functioning accuracy of velocity and position calculation degrades significantly.
Źródło:: Logistics and Transport; 2013, 19, 3; 85-90
1734-2015
Pojawia się w:: Logistics and Transport
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 47.

Tytuł:: Design of on-line driver assistance Satellite Observation System (SOS)
Autorzy:: Filipek, P.
Jedliński, Ł.
Kamiński, T.
Powiązania:: https://bibliotekanauki.pl/articles/245416.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: SOS satellite observation system
ground SOS station
vision-telecommunication satellite
overtaking
GPS coordinates GSM system
road safet
Opis:: The article describes the design of a Satellite Observation System (SOS) which assists drivers in their travel (in real time). The system allows the driver to receive a top-down view (in the respective scale) covering a large area around their vehicle. Using the GPS and the GSM system as well as images from a satellite - thanks to the SOS, the driver will be provided with a valuable tool assisting them in driving e.g. when: overtaking in heavy field conditions, identification of the road or facilities, setting a more optimal route (bypassing traffic jams) etc.. The principle of operation is based on respectively located satellites which take very high-resolution pictures of the Earth's surface in real time. These pictures are sent via the GSM (or a different) system to the receiver of the SOS system on the ground -a SOS station - which projects GPS coordinates on them. In order to receive the image with the area of the road ahead (or around the vehicle), the driver in a vehicle turns on their SOS system which sends the vehicle's GPS coordinates to the SOS station. The SOS station processes the picture received from the satellite, preparing only a small section of it which corresponds to the area around the GPS coordinates - the vehicle's position. This section is then sent to the SOS system inside the vehicle, which, in turn, displays it on an LCD screen. This cycle repeats so rapidly that the driver may be under an impression that he/she watches the image from the camera placed over the vehicle. The SOS system will contribute to the increase in road safety and the maneuver of overtaking in difficult field conditions will become less risky. The SOS system will also allow the emergency services and the police to promptly locate and identify any road accidents.
Źródło:: Journal of KONES; 2011, 18, 3; 79-82
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 48.

Tytuł:: Signal Research for Alternative Baltic Navigation System
Autorzy:: Dziewicki, M.
Młotkowski, J.
Stupak, T.
Powiązania:: https://bibliotekanauki.pl/articles/1841574.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: navigation systems
Baltic Navigation System
Global Navigation Satellite System (GNSS)
IALA recommendations
Horizontal Dilution of Precision
Real Time Kinematic (RTK)
Opis:: In the project R-Mode a navigation system for Baltic Sea is designed. In the range of these actions in summer of 2020 the signal for DGPS base station Rozewie were adopted and measurements on the sea were performer. This experiment is shown in the article.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 4; 799-802
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 49.

Tytuł:: Determination of seabed heights in the area of Polish territorial waters in the official reference system
Autorzy:: Rogowski, J. B.
Galas, R.
Kłęk, M.
Powiązania:: https://bibliotekanauki.pl/articles/116398.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
reference system
seabed heights
EUREF
mareograph in Amsterdam
Baltic Sea
Polish territorial waters
EGM 2008
Opis:: The determination of the height in the vertical reference frame in force in Poland is based both on national regulations (Council of Ministers Regulation, 2012) and on the resolution adopted by the EUREF subcommittee in Tromsø (Resolution No. 5, EUREF Symposium, 2000). Currently, the PL-KRON86-NH vertical reference frame is in use in Poland – a normal height system referred to a quasi-geoid of the average level of the Baltic Sea determined by the zero level of the mareograph in Kronstadt. According to the Regulation, by the end of 2019, Poland will adopt the PL-EVRF2007-NH vertical reference frame, i.e. a normal height system referred to the zero level of the mareograph in Amsterdam. The authors present a method of determining normal heights of seabed referred to the zero level of the mareograph in Amsterdam for coastal areas of the Baltic Sea. This method uses GNSS measurements, the EGM 2008 model and depth measuring methods typical for underwater mining.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 2; 339-342
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 50.

Tytuł:: Przetwarzanie sygnałów systemu galileo w odbiorniku radia programowalnego SDR
Signal processing system galileo receiver software defined radio sdr
Autorzy:: Kowalik, R.
Bieńczak, R.
Komorek, A.
Powiązania:: https://bibliotekanauki.pl/articles/314426.pdf
Data publikacji:: 2016
Wydawca:: Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:: system Galileo
technologia SDR (Software Defined Radio)
GNSS (Globalny Nawigacyjny System Satelitarny)
Galileo system
software defined radio
SDR
global navigation satellite system (GNSS)
Opis:: W artykule przedstawiono analizę przetwarzania sygnałów systemu Galileo w odbiorniku radia programowalnego SDR. W tym celu na wstępie omówiono model matematyczny wszystkich sygnałów SIS wykorzystywanych przez system Galileo. W dalszej kolejności omówiono koncepcję ogólną odbiornika SDR z głównym naciskiem na przedstawienie modułu radiowego front-end. Ponad zaprezentowane wybrane symulacje przetwarzania sygnałów SIS. Na samym końcu zaprezentowano wnioski.
The article presents an analysis of signal processing system Galileo receiver radio programmable SDR. For this purpose, first of all we describe the mathematical model all the signals of the SIS used in the Galileo system. Subsequently, we discussed the concept of a general SDR receiver with the main emphasis on the performance of the receiver front-end. More than presents selected simulation signal processing SIS. At the end of the conclusions presented.
Źródło:: Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 12; 1069-1074
1509-5878
2450-7725
Pojawia się w:: Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 51.

Tytuł:: The Russian ALFA System in the Context of the Development of Radionavigation in the 21st Century
Autorzy:: Felski, Andrzej
Powiązania:: https://bibliotekanauki.pl/articles/2063950.pdf
Data publikacji:: 2021
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: navigational systems
radionavigation
ALFA system
marine navigation
ground-based radionavigation system
ground-based augmentation system
Global Navigation Satellite System
21st century challenges
Opis:: For nearly the entire post-World War II period, naval and air navigation relied primarily on ground-based radionavigation systems. However, the spontaneous development of satellite systems gradually led to their disappearance. They are currently used partly in air operations and marginally in maritime navigation in some areas around Asia, in Russia and in the Middle East. However, at the beginning of the 21st century, the threat of effective interference with satellite systems began to be raised, which led to an increased interest in restoring or upgrading ground-based systems as backup systems in the Western world. In this context, the approach of Russia is interesting, as it is associated with the vast majority of deliberate GPS interference. There are reports in the world literature that various ground-based radionavigation systems operating in Russia are still observed. The article analyses, on the basis of the few available sources, information on the ALFA system, about which the least is known, and there are many indications that it is ready for use.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 3; 723--728
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 52.

Tytuł:: Errors of UAV autonomous landing system for different radio beacon configurations
Autorzy:: Kelner, J. M.
Ziółkowski, C.
Powiązania:: https://bibliotekanauki.pl/articles/117342.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: aviation
Global Navigation Satellite System (GNSS)
autonomous landing system
unmanned aerial vehicle (UAV)
Doppler-based Landing System
drone
UAV drone
Doppler effect
Opis:: At the turn of the 20th and 21st centuries, development of microelectronics and microwave techniques allowed for minimization of electronic devices and systems, and the use of microwave frequency bands for modern radio communication systems. On the other hand, the global navigation satellite system (GNSS) have contributed to the popularization of radio navigation in civilian applications. These factors had a direct impact on the development and dissemination of unmanned aerial vehicles (UAVs). In the initial period, the UAVs were used mainly for the army needs. This results also from the legal aspects of the UAV use in the airspace. Currently, commercial UAVs for civilian applications, such as image recognition, monitoring, transport, etc., are presented increasingly. Generally, the GNSS system accuracy for the UAV positioning during a flight is enough. However, the GNSS use for automatic takeoff and landing may be insufficient. The extensive, ground-based navigation support systems used at airports by manned aircraft testify to these. In the UAV case, such systems are not used due to their complexity and price. For this reason, the novel dedicated take-off and landing systems are developed. The proposal of the autonomous landing system, which is based on the Doppler effect, was presented in 2017. In this case, the square-based beacon configuration was analyzed. This paper shows the influence of various beacon configurations in the Doppler-based landing system on the positioning error during the UAV landing approach.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 2; 429-435
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 53.

Tytuł:: New threat to global transport. GNSS receiver spoofing
Autorzy:: Gucma, M.
Powiązania:: https://bibliotekanauki.pl/articles/224112.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: GNSS Receiver
Global Navigation Satellite System
signal spoofing
anti-spoofing technique
global transport
threats
GNSS
komunikacja globalna
zagrożenia
Opis:: Transport and logistics in XXI century relies on the several technical systems for assuring safe and reliable operations. One of widely used systems are satellite positioning systems, used to monitoring transport means and cargo itself. Reliability of the whole transport chain is often combined with singular reliability of satellite monitoring system. Possible threats to precise positioning of any vehicle is GNSS (Global Navigation Satellite System) deliberate interference. So called spoofing interference can mislead receiver in transport objective for reporting entirely wrong position and timing. To fight with this phenomena’s antispoofing techniques are developed. This paper will provide a review of late researches in field of GNSS anti-spoofing on the side of receiver. GNSS receiver vulnerabilities for a spoofer (device) attack will be presented as well as anti-spoofing algorithms. Possible limitation, costs as well as countermeasures methods will be shown thoroughly. Some of recent trends in anti-spoofing techniques in the world will be outlined up to date.
Źródło:: Archives of Transport; 2015, 35, 3; 7-14
0866-9546
2300-8830
Pojawia się w:: Archives of Transport
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 54.

Tytuł:: Quality of satellite communication in selected mobile Android smartphones
Dokładność komunikacji satelitarnej w wybranych mobilnych smartfonach Android
Autorzy:: Falkowski-Gilski, Przemysław
Powiązania:: https://bibliotekanauki.pl/articles/2070258.pdf
Data publikacji:: 2021
Wydawca:: Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:: mobile application
mobile communication
satellite communication
satellite navigation system
aplikacja mobilna
komunikacja mobilna
komunikacja satelitarna
system nawigacji satelitarnej
Opis:: Today, thanks to mobile devices, satellite communication is available to anyone and everywhere. Gaining information on one’s position using GNSS (Global Navigation Satellite Systems), particularly in unknown urban environments, had become an everyday activity. With the widespread of mobile devices, particularly smartphones, each person can obtain information considering his or her location anytime and everywhere. This paper is focused on a study, considering the quality of satellite communication in case of selected mobile terminals. It describes a measurement campaign carried out in varying urban environments, including a set of Android-powered smartphones coming from different manufacturers. Based on this, respective conclusions and remarks are given, which can aid consumers as well as device manufacturers and application developers.
Obecnie, dzięki urządzeniom mobilnym, komunikacja satelitarna jest dostępna dla każdego niezależnie od położenia. Pozyskiwanie informacji o własnej pozycji z wykorzystaniem systemów GNSS (Global Navigation Satellite Systems), szczególnie w nieznanych środowiskach miejskich, stało się codzienną aktywnością. Wraz z wszechobecnością urządzeń mobilnych, w szczególności smartfonów, każda osoba może pozyskać informacje dotyczące jego lub jej położenia zawsze i wszędzie. Praca ta skupia się na badaniu, dotyczącym jakości komunikacji satelitarnej w przypadku wybranych terminali mobilnych. Opisuje kampanię pomiarową przeprowadzoną w zmiennym środowisku miejskim, z wykorzystaniem zestawu smartfonów pracujących pod kontrolą systemu Android pochodzących od różnych dostawców. Na podstawie tego wyciągnięto wnioski i wskazówki, które mogą wspomóc zarówno konsumentów jak i producentów sprzętu i programistów aplikacji.
Źródło:: Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2021, 11, 4; 32--37
2083-0157
2391-6761
Pojawia się w:: Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 55.

Tytuł:: BeiDou and Galileo, Two Global Satellite Navigation Systems in Final Phase of the Construction, Visibility and Geometry
Autorzy:: Januszewski, J.
Powiązania:: https://bibliotekanauki.pl/articles/117164.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
BeiDou
Galileo
GNSS construction
GNSS geometry
GNSS visibility
Global Positioning System (GPS)
Dilution of Precision (DOP)
Opis:: Spatial segment is one of three segments of each satellite navigation systems (SNS). Nowadays two SNSs, GPS and GLONASS, are fully operational, two next SNSs, BeiDou in China and Galileo in Europe, are in final phase of the construction. In the case of China system this segment will consist of 35 satellites with three types of orbits ? medium (MEO), geostationary (GEO) and inclined geosynchronous (IGSO). As GEO and IGSO satellites can be used in China and Asia-Pacific region only, BeiDou MEO constellation with 27 fully operational satellites will be taken into account in this paper. The orbital planes of the Galileo constellation will be divided in “slots” that contains at least one operational satellite. The Galileo reference constellation has 24 nominal orbital positions or operational slots in MEO homogeneously distributed in 3 orbital planes; i.e. 8 slots equally spaced per plane. As the error of user’s position obtained from both systems depends on geometry factor DOP (Dilution Of Precision) among other things the knowledge of the number of satellites visible by the user above given masking elevation angle Hmin and the distributions of DOP coefficient values, GDOP in particular, is very important. The lowest and the greatest number of satellites visible in open area by the observer at different latitudes for different Hmin, the percentage of satellites visible above angle H, distributions (in per cent) of satellites azimuths and GDOP coefficient values for different Hmin for BeiDou and Galileo systems at different latitudes are presented in the paper.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 3; 381-387
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 56.

Tytuł:: Availability of the GNSS geodetic networks position during the hydrographic surveys in the ports
Autorzy:: Specht, C.
Makar, A.
Specht, M.
Powiązania:: https://bibliotekanauki.pl/articles/116211.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
hydrographic survey
IHO S-44
Global Positioning System (GPS)
GLONASS
gedetic network
exclusive order
special order
Opis:: Geodetic network GNSS receivers are more commonly associated with positioning systems used in maritime hydrography. In terms of positioning accuracy when no terrain obstacles are present, they meet international hydrographic surveys standards (S‐44) fully. Those standards are defined as 1m (0.95) for Exclusive Order and 2m (0.95) for Special Order. It is equally as important to ensure access to position which error is not higher than above mentioned maximum values. This is most often determined by the density of port infrastructure. This article presents the results of analysis of availability of hydrographic system that operates based on geodetic GNSS networks. Hydrographic surveys in question were undertaken in inner basins with diverse infrastructure. Three representative types of ports were selected for this reason: fishing type (Hel), medium sized, modern commercial type (Gdynia) and highly congested, narrow canal type (Gdansk – Motlawa). A nonpublic, geodetic GNSS network was used for all surveys. It is worth mentioning that the above network is at the moment the only available network that provides both GPS and GLONASS corrections. The surveys provided evidence that geodetic GNSS networks can be successfully utilised to determine position of hydrographic vessel in low and moderately developed ports as well as in Exclusive and Special Orders. In highly congested ports however, the availability of the above mentioned method of measurement can be insufficient to realise a survey.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 4; 657-661
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 57.

Tytuł:: Modernization of Maritime DGPS in Poland
Autorzy:: Dziewicki, M.
Powiązania:: https://bibliotekanauki.pl/articles/116983.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
Differential GPS (DGPS)
Global Positioning System GPS
IMO Requirements
IALA Recommendations
e-Navigation
Maritime DGPS
Radionavigation
Opis:: Some new techniques and functionality adopted for modernization of national DGPS systems by maritime administrations in Europe are presented. Any solution adopted must meet international requirements: IMO standards and IALA e-NAV Committee recommendations. The results of DGPS Re-capitalization Meeting in Gdynia 2008 are presented. Modernization and re-engineering of maritime DGPS must take into account backward compatibility with existing onboard receivers as well as future trends towards e-Navigation. Operational and legal status of the Polish DGPS network is also mentioned in this context.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 1; 39-42
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 58.

Tytuł:: An Effect of Urban Development on the Accuracy of the GPS/EGNOS System
Autorzy:: Bober, R.
Szewczuk, T.
Wolski, A.
Powiązania:: https://bibliotekanauki.pl/articles/116270.pdf
Data publikacji:: 2008
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
Global Positioning System GPS
EGNOS
Effect of Urban Development
Accuracy
Accuracy of Position
positioning system
Port of Szczecin
Opis:: This article presents the results of research into the accuracy of position determination by a GPS/EGNOS system in a densely built-up residential area. These results are compared with the relevant results obtained for a position in an open area.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 3; 235-238
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 59.

Tytuł:: Accuracy Evaluation of Real-Time GNSS Precision Positioning with RTX Trimble Technology
Ocena dokładności precyzyjnego pozycjonowania GNSS w czasie rzeczywistym z wykorzystaniem technologii RTX Trimble
Autorzy:: Ochałek, A.
Niewiem, W.
Puniach, E.
Ćwiąkała, P.
Powiązania:: https://bibliotekanauki.pl/articles/395769.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: Global Navigation Satellite System
data processing
statistical analysis
real-time systems
GNSS
przetwarzanie danych
analiza statystyczna
systemy czasu rzeczywistego
Opis:: In this paper, authors present results of accuracy verification of the Trimble RTX technology. The GNSS receiver Spectra Precision SP60 was used in Cyprus (Kato Paphos Archaeological Park). To evaluate the accuracy of the receiver, two measuring test networks (consisting of 30 and 55 control points) were established. All points were determined in four measuring cycles. Additionally, in order to make more advanced analysis of the data, the bases were also measured by using another GNSS receiver - Geomax-Zenith 25. The point positions, in this case, were conducted in the local coordinate system of Kato Paphos Archaeological Park by using RTK positioning technology. To make a comparison, it was necessary to transform the coordinates based on different groups of fitting points. Analysis allowed to conclude that the Spectra Precision SP60 receiver and the RTX Trimble technology guarantee repeatable results (on the level of 4 cm) of point positioning measurements.
W artykule autorzy przedstawiają wyniki analizy dokładności technologii Trimble RTX. Odbiornik GNSS Spectra Precision SP60 wykorzystano podczas badań na Cyprze (Park Archeologiczny Kato Pafos). Aby ocenić dokładność odbiornika, ustalono dwie bazy testowe (składające się z 30 i 55 punktów kontrolnych). Wszystkie punkty zostały określone w czterech cyklach pomiarowych. Dodatkowo, w celu bardziej zaawansowanej analizy danych, pomiary zostały również wykonane przy użyciu innego odbiornika GNSS - Geomax-Zenith 25. Pozycjonowanie w tym przypadku, zostało przeprowadzone w lokalnym układzie współrzędnych parku archeologicznego Kato Pafos z wykorzystaniem technologii pozycjonowania RTK. W celu porównania wyników badań konieczne było przetransformowanie współrzędnych do jednego układu. Transformację wykonano na podstawie różnych grup punktów dostosowania. Analiza otrzymanych wyników pozwoliła stwierdzić, że odbiornik Spectra Precision SP60 i technologia RTX Trimble gwarantują porównywalne wyniki pozycjonowania (na poziomie 4 cm).
Źródło:: Civil and Environmental Engineering Reports; 2018, No. 28(4); 49-61
2080-5187
2450-8594
Pojawia się w:: Civil and Environmental Engineering Reports
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 60.

Tytuł:: An SDR-based Study of Multi-GNSS Positioning Performance During Fast-developing Space Weather Storm
Autorzy:: Filić, M.
Filjar, R.
Ruotsalainen, L.
Powiązania:: https://bibliotekanauki.pl/articles/117597.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
utilization of GNSS
Global Positioning System (GPS)
GLONASS
RTKLIB
multi-GNSS
space weather storm
GNSS SDR Receiver
Opis:: The understanding of the ionospheric effects on GNSS positioning performance forms an essential pre-requisite for resilient GNSS development. Here we present the results of a study of the effects of a fast-developing space weather disturbance on the positioning performance of a commercial-grade GPS+GLONASS receiver. Using experimentally collected pseudoranges and the RTKLIB, an open-source software-defined GNSS radio receiver operating in the simulation mode, we assessed GNSS positioning performance degradations for various modes of GNSS SDR receiver operation, and identified the benefits of utilisation of multi-GNSS and ionospheric error correction techniques.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 3; 395-400
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 61.

Tytuł:: An extension of the satellite monitoring liberty GPS system for the support requirements of transportation companies
Rozbudowa satelitarnego systemu monitorowania pojazdów liberty GPS na podstawie wymagań firm transportowych
Autorzy:: Gustof, P.
Hornik, A.
Powiązania:: https://bibliotekanauki.pl/articles/374573.pdf
Data publikacji:: 2008
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:: GPS
satelitarny system monitorowania pojazdów
logisyka
Liberty GPS
Universal Mobile Telecommunication System
satellite monitoring system
logistic
Opis:: In working out the performance principles introduced into the construction and functionality of a Satellite Monitoring Liberty GPS System for vehicles and its possibilities in offering services that improve the logistical processes for transportation companies.
W opracowaniu przedstawiono zasady budowy i funkcjonowania Satelitarnego Systemu Monitorowania Pojazdów Liberty GPS oraz jego możliwości w oferowaniu usług mających na celu usprawnienie procesów logistycznych w firmach transportowych.
Źródło:: Transport Problems; 2008, 3, 1; 41-44
1896-0596
2300-861X
Pojawia się w:: Transport Problems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 62.

Tytuł:: Modeling of Ionospheric Delay for SBAS Using Spherical Harmonics Functions
Autorzy:: Han, D.
Yun, H.
Kee, C.
Powiązania:: https://bibliotekanauki.pl/articles/116620.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Consequences of Delays
Ionospheric Delay
satellite based augmentation system (SBAS)
Opis:: In SBAS (satellite‐based augmentation system), it is important to estimate ionospheric delay accurately to guarantee userʹs accuracy and integrity. Grid based ionospheric models are generally used to estimate ionospheric delay for SBAS. In grid based model, SBAS broadcasts vertical ionospheric delays at the grid point, and users get their ionospheric delay by interpolating those values. Ionospheric model based on spherical harmonics function is another method to estimate ionospheric delay. This is a function based approach and spherical harmonics function is a 2‐D fourier series, containing the product of latitude dependent associated Legendre functions and the sum of the longitude dependent sine and cosine terms. Using ionospheric delay measurements, coefficients for each spherical harmonics functions are estimated. If these coefficients are known, user can reconstruct ionospheric delay. In this paper, we consider the spherical harmonics based model and propose a ionospheric delay estimation strategy for SBAS that can be used to mitigate ionospheric delay estimation error, especially in storm condition. First, coefficients are estimated under initial order and degree. Then residual errors for each measurement are modeled by higher order and degree terms, then coefficients for these terms are estimated. Because SBAS message capacity is limited, in normal condition, initial order terms are only used to estimate ionospheric delay. If ionospheric storm is detected and there is need to mitigate the error, higher order terms are also used and error can be decreased. To compare the accuracy of spherical harmonics based model with grid based model, some post‐processing test results are presented. Raw observation data is obtained from RINEX format and the root mean square(RMS) and max value of residual errors are presented.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 2; 205-209
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 63.

Tytuł:: Nominal and Real Accuracy of the GPS Position Indicated by Different Maritime Receivers in Different Modes
Autorzy:: Januszewski, J.
Powiązania:: https://bibliotekanauki.pl/articles/117133.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
Global Positioning System GPS
Navigational System
Navigational System Receiver
Accuracy of Position
GPS Receiver
GPS Position Accuracy
Dilution of Precision (DOP)
Opis:: Nowadays on the ship’s bridge two or even more GPS receivers are installed. As in the major cases the coordinates of the position obtained from these receivers differ the following questions can be posed – what is the cause of this divergence, which receiver in the first must be taken into account etc. Based on information published in annual GPS and GNSS receiver survey it was estimated the percentage of GPS receivers designed for marine and/or navigation users. The measurements of GPS position based on the four different stationary GPS receivers were realized in the laboratory of Gdynia Maritime University in Poland in the summer 2012. The coordinates of the position of all these receivers were registered at the same time. The measurements in mode 3D were made for different input data, the same for all receivers. The distances between the individual unit’s antenna were considered also. Next measurements in mode 3D also were realized on two ships in different European ports. Additional measurements were made in mode 2D with three receivers for different their’s antenna heights. The results showed that the GPS position accuracy depends on the type of the receiver and its technical parameters particularly.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 1; 11-19
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 64.

Tytuł:: VR teleoperation to support a GPS-free positioning system in a marine environment
Autorzy:: Lager, M.
Topp, E. A.
Malec, J.
Powiązania:: https://bibliotekanauki.pl/articles/1841575.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: navigation systems
autonomous surface vehicle
graphical user interface
Global Positioning System
Global Navigation Satellite System
unmanned ground vehicles
terrain-aided navigation
VR teleoperation
Opis:: Small autonomous surface vehicles (ASV) will need both teleoperation support and redundant positioning technology to comply with expected future regulations. When at sea, they are limited by a satellite communication link with low throughput. We have designed and implemented a graphical user interface (GUI) for teleoperation using a communication link with low throughput, and one positioning system, independent of the Global Positioning System (GPS), supported by the teleoperation tool. We conducted a user study (N=16), using real-world data from a field trial, to validate our approach, and to compare two variants of the graphical user interface (GUI). The users experienced that the tool gives a good overview, and despite the connection with the low throughput, they managed through the GUI to significantly improve the positioning accuracy.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 4; 789-798
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 65.

Tytuł:: A PPP baseline approach for bridge passing
Autorzy:: Lass, C.
Powiązania:: https://bibliotekanauki.pl/articles/24201435.pdf
Data publikacji:: 2023
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: inland waterways
precise point positioning
Global Navigation Satellite System
multisensor data fusion
multi-antenna
navigation and timing
inertial navigation system
rate of turn
Opis:: Global Navigation Satellite Systems (GNSS) are increasingly used as the main source of Positioning, Navigation and Timing (PNT) information for inland water navigation. In order to enable automated driving and facilitate driver assistant functions, it becomes of crucial importance to ensure high reliability and accuracy of the GNSS-based navigation solution, especially in challenging environments. One challenging phase of inland waterway navigation is bridge passing which leads to non-line-of-sight (NLOS) effects such as multipath and loss of tracking. This work presents a Precise Point Positioning (PPP) based algorithm in a two-antenna system where one antenna is at the bow and the other is at the stern. Additionally, gyroscope data from an IMU is used. In contrast to a separated position calculation of the two antennas, only one antenna position is estimated and the other is derived from the baseline between the antennas. This allows for accurate positioning even if one antenna does not receive any GNSS measurements. The presented scheme is evaluated using real measurement data from an inland water scenario with multiple bridges. In comparison with a standard PPP scheme as well as an RTK algorithm, the presented approach shows clear advantages in challenging scenarios.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 33--40
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 66.

Tytuł:: A Matlab Implementation of Differential GPS for Low-cost GPS Receivers
Autorzy:: Ali, Q
Montenegro, S.
Powiązania:: https://bibliotekanauki.pl/articles/116127.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: marine navigation
Global Positioning System GPS
Matlab, Differential GPS (DGPS)
GPS Receiver
unmanned aerial vehicle (UAV)
Global Navigation Satellite System (GNSS)
RINEX Format
Opis:: A number of public codes exist for GPS positioning and baseline determination in off-line mode. However, no software code exists for DGPS exploiting correction factors at base stations, without relying on double difference information. In order to accomplish it, a methodology is introduced in MATLAB environment for DGPS using C/A pseudoranges on single frequency L1 only to make it feasible for low-cost GPS receivers. Our base station is at accurately surveyed reference point. Pseudoranges and geometric ranges are compared at base station to compute the correction factors. These correction factors are then handed over to rover for all valid satellites observed during an epoch. The rover takes it into account for its own true position determination for corresponding epoch. In order to validate the proposed algorithm, our rover is also placed at a pre-determined location. The proposed code is an appropriate and simple to use tool for post-processing of GPS raw data for accurate position determination of a rover e.g. Unmanned Aerial Vehicle during post-mission analysis.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 3; 343-350
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 67.

Tytuł:: Functionality of Sea Ice Data Sources on the NSR
Autorzy:: Pastusiak, T.
Powiązania:: https://bibliotekanauki.pl/articles/117634.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Northern Sea Route
e-Navigation
sea ice data source
ISM Code
ice navigation
IRIDIUM Satellite System
arctic area
ice certificate
Opis:: The functionality of available official sources of sea ice data for the Northern Sea Route to date is low. In recent years a large number of new publicly available sources have appeared. Their functionality for purposes of route planning has yet to be evaluated. This study presents results of qualitative and expert analyses of various sources. It is proposed to use new indicators to enable comparison of functionality of data sources. New sources provide the technical progress that is instrumental in reducing the amount of effort and influence of the human factor in the decision-making system. The study also presents solutions to the problem of limited bandwidth available at high latitudes with Iridium satellite system. Presented solutions can be used on any vessel by any company or navigator to implement or design the decision support system related to route planning in ice in accordance with the requirements of the ISM Code and concept of e-Navigation.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 3; 441-450
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 68.

Tytuł:: Polish DGPS System: 1995-2018 – studies of reference station operating zones
Autorzy:: Specht, C.
Specht, M.
Dąbrowski, P. S.
Powiązania:: https://bibliotekanauki.pl/articles/117143.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
Polish DGPS System
reference station operating zones
history of navigation
Differential GPS (DGPS)
DGPS Reference Station
positioning system
Global Positioning System (GPS)
Opis:: The operating zone of a radio navigation system is one of its main operating features. It determines the size of a water body in which the system can be used, while guaranteeing vessels’ navigation safety. The DGPS system in the LF/MF range is now the basic positioning system in coastal waters around the world, which guarantees not only metre positioning accuracy, but it is also the only one to provide navigators with signals on positioning reliability. This paper describes and summarises over twenty years of studies dealing with the operating zone of the Polish DGPS reference station network. This paper is the fifth in a series of publications whose aim was to present in detail the process of installation, testing and long-term evaluation of the navigational parameters of the Polish DGPS system, launched in 1995. This paper includes the theoretical foundations of determination of the Dziwnów and Rozewie DGPS reference station operating zones in the years 1995-2018. Moreover, it presents the measurement results for the signal levels and the results of their analyses, which determine the station operating zones.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 581-586
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 69.

Tytuł:: Monitorowanie stanu geometrycznego przepraw mostowych z wykorzystaniem systemu nawigacji satelitarnej
Condition monitoring geometric bridges using satellite navigation system
Autorzy:: Wrona, M.
Piotrowska, W.
Powiązania:: https://bibliotekanauki.pl/articles/313932.pdf
Data publikacji:: 2016
Wydawca:: Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:: system nawigacji satelitarnej
nawigacja satelitarna
pomiar geodezyjny
przeprawa mostowa
satellite navigation system
geodetic measurement
crossing bridge
Opis:: Artykuł opisuje problematykę geodezyjnych pomiarów konstrukcji mostowych. Ze względu na coraz większą skalę wznoszonych obiektów istnieje potrzeba dostarczania coraz lepszych narzędzi pozwalających na wiarygodną kontrolę odkształceń i przemieszczeń konstrukcji. Jest to niezbędne dla zweryfikowania faktycznego stanu technicznego obiektu oraz zapewnienia najwyższego stopnia bezpieczeństwa. Oprócz opisu licznych instalacji monitoringu geodezyjnego na świecie, autorzy przedstawili przykłady pierwszych w Polsce testów pomiarowych na obiektach mostowych. Opisano próby wykorzystania wysokoczęstotliwościowych pomiarów GNSS w badaniu dynamiki konstrukcji Mostu Siekierkowskiego w Warszawie.
The article describes issues of bridge construction measurements using new survey methods. Increasing scale of emergent constructions needs better measurement tools for reliable control of deformations and movements of the object. It is essential to verify condition of the construction and provide the highest level of safety. Authors characterize sample monitoring installations and first in Poland measurement tests on bridges. Integrated measurements techniques were used on Siekierkowski Bridge in Warsaw using high rate GNSS data for measurements dynamics of the construction.
Źródło:: Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 6; 493-496
1509-5878
2450-7725
Pojawia się w:: Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 70.

Tytuł:: Installed base of GNSS devices and total revenue of GNSS device sales in different modes of transport
Autorzy:: Januszewski, J.
Powiązania:: https://bibliotekanauki.pl/articles/393834.pdf
Data publikacji:: 2018
Wydawca:: Polskie Stowarzyszenie Telematyki Transportu
Tematy:: satellite navigation system
GNSS
GNSS devices
mode of transport
system nawigacji satelitarnej
urządzenia GNSS
rodzaj transportu
Opis:: Since many years the most frequently method used for position fix in transport are global satellite navigation systems (SNS) as GPS and GLONASS and Satellite Based Augmentation System as EGNOS, GAGAN, MSAS and WAAS. Next global SNS (Galileo and BeiDou) and SBAS (SDCM) and KAAS) are under construction. The generic name given to all these mentioned above systems is Global Navigation Satellite System (GNSS). Since 2010 GNSS Market Report, edited by the European GNSS Agency (GSA), takes a comprehensive look at the global GNSS market providing detailed analysis per market segment (currently 9 segments) and application type (currently depending on segment 4, 8, 11 or 13). In order to show the different distributions of these two parameters in different continents the world was divided into six regions (European Union, Russia and Europe without European Union, North America, Asia‒Pacific, Middle East and Africa, South America and Caribbean). The distributions of installed base of GNSS device and total revenue of GNSS devices sales by region and application in selected years for all four modes of transport (area, maritime, rail and road) are presented. In these analysis new and emerging GNSS trends by all these modes and the population numbers in each region was taken into account also.
Źródło:: Archives of Transport System Telematics; 2018, 11, 3; 19-23
1899-8208
Pojawia się w:: Archives of Transport System Telematics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 71.

Tytuł:: Methodology for determining deforestation areas in Lviv region using remote sensing data
Autorzy:: Chetverikov, Borys
Trevoho, Ihor
Babiy, Lubov
Malanchuk, Mariia
Powiązania:: https://bibliotekanauki.pl/articles/43852817.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: teledetekcja
monitoring satelitarny
obraz satelitarny
Landsat 8
remote sensing
space image
satellite monitoring system
Opis:: The object of the study is the processing of space images on the territory of the Carpathian territory in the Lviv region, obtained from the Landsat-8 satellite. The work aims to determine the area of deforestation in the Carpathian territory of the Lviv region from different time-space images obtained from the Landsat-8 satellite. Methods of cartography, photogrammetry, aerospace remote sensing of the Earth and GIS technology were used in the experimental research. The work was performed in Erdas Imagine software using the unsupervised image classification module and the DeltaCue difference detection module. The results of the work are classified as three images of Landsat-8 on the territory of the Carpathian territory in the Lviv region. The areas of forest cover for each of them for the period of 2016-2018 have been determined. During the three years, the area of forests has decreased by 14 hectares. Our proposed workflow includes six stages: analysis of input data, band composition of space images on the research territory, implementation of unsupervised classification in Erdas Imagine software and selection of forest class and determination of implementing this workflow, the vector layers of the forest cover of the Carpathians in the Lviv region for 2016, 2017, 2018 were obtained, and on their basis, the corresponding areas were calculated and compared.
Źródło:: Advances in Geodesy and Geoinformation; 2022, 71, 1; art. no. e21, 2022
2720-7242
Pojawia się w:: Advances in Geodesy and Geoinformation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 72.

Tytuł:: Low bandwidth network-RTK correction diissemination for high accuracy maritime navigation
Autorzy:: Alissa, S.
Håkansson, M.
Henkel, P.
Mittmann, U.
Hüffmeier, J.
Rylander, R.
Powiązania:: https://bibliotekanauki.pl/articles/1841552.pdf
Data publikacji:: 2021
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: real time kinematic
high accuracy maritime navigation
network-RTK
Global Navigation Satellite System
VHF data exchange system
GNSS receiver
virtual reference station
physical reference stations
Opis:: More than half of the incidents reported to EMSA relate to nautical events such as collision, groundings and contacts. Knowledge of accurate and high-integrity positioning is therefore not only a need for future automated shipping but a base for today’s safe navigation. Examples on accidents include Ever Given in the Suez Canal and HNoMS Helge Ingstad in Norway. A Network-RTK (NRTK) service can be used as an augmentation technique to improve performance of shipborne GNSS receivers for future positioning of manned and unmanned vessels in restricted areas, such as port areas, fairways, and inland water ways. NRTK service providers generate RTK corrections based on the observations of networks of GNSS reference stations which enables the users to determine their position with centimeter accuracy in real-time using a shipborne GNSS receiver. Selection of appropriate communication channels for dissemination of NRTK corrections data is the key to a secure positioning (localization) service. In PrePare-Ships project, the modern maritime communication system VDES (VHF Data Exchange System) is proposed to distribute SWEPOS (NRTK in Sweden) correction data to shipborne positioning modules. VDES is a very reliable technique and it is compatible with most onboard functionalities. In order to minimize the impact on the overall VDES data capacity in a local area, NRTK correction data shall only occupy a single VDES slot with a net capacity of 650 bytes. Update rates may vary but are preferably at 1Hz. However, NRTK correction data size changes instantly, depending on the number of visible GNSS satellites, and the data rate can therefore sometimes reach in excess of 1000 byte/s. In this study, a smart technique is proposed to reduce size of NRTK correction data to instantly adapt with the VDES requirements by choosing a combination of specific signals, satellites or even constellations such that the data rate is not more than 650 byte/s, and at the same time it achieves optimal positioning performance with the accuracy required by the PrePare-Ships project application.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 1; 171-179
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 73.

Tytuł:: Subsidence determination in the Central Valley, California
Autorzy:: Romero, M.
Berber, M. M.
Powiązania:: https://bibliotekanauki.pl/articles/106809.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: subsidence
GNSS
Global Navigation Satellite System
APPS
Automatic Precise Positioning Service
elevation changes
subsydencja
nawigacja satelitarna
pozycjonowanie precyzyjne
zmiany wysokości
zmiany elewacji
Opis:: Twenty four hour GNSS (Global Navigation Satellite System) data acquired monthly for 5 years from 8 CORS (Continuously Operating Reference Station) stations in Central Valley, California are processed and vertical velocities of the points are determined. To process GNSS data, online GNSS data processing service APPS (Automatic Precise Positioning Service) is used. GNSS data downloaded from NGS (National Geodetic Survey) CORS are analyzed and subsidence at these points is portrayed with graphics. It is revealed that elevation changes range from 5 mm uplift in the north to 163 mm subsidence in the southern part of the valley.
Źródło:: Reports on Geodesy and Geoinformatics; 2018, 106; 35-42
2391-8365
2391-8152
Pojawia się w:: Reports on Geodesy and Geoinformatics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 74.

Tytuł:: Positioning Using GPS and GLONASS Systems
Autorzy:: Kujawa, L.
Rogowski, J. B.
Kopańska, K.
Powiązania:: https://bibliotekanauki.pl/articles/116742.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
Global Positioning System GPS
GLONASS
Precise Positioning
Positioning Accuracy
Geometric Dilution of Precision (GDOP)
Horizontal Dilution of Precision (HDOP)
DOP Analysis
Opis:: This paper presents an experiment involving the processing of observations using the GPS and GPS/GLONASS systems performed at the BOGO, BOGI, and JOZ2 IGS stations. Due to the small number of GLONASS satellites, the authors failed to receive any significant improvement in positioning accuracy using GPS and GLONASS observations jointly.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 3; 283-286
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 75.

Tytuł:: Architektura MDGNSS : Przenośny Różnicowy Globalny Nawigacyjny System Satelitarny
Architecture of MDGNSS : Mobile Differential Global Navigation Satellite System
Autorzy:: Dobryakova, L.
Ochin, E.
Powiązania:: https://bibliotekanauki.pl/articles/317068.pdf
Data publikacji:: 2016
Wydawca:: Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:: pozycjonowanie
dokładność pozycjonowania
nawigacja
GNSS
MDNSS
nawigacyjny system satelitarny
transport bezzałogowy
bezpieczeństwo transportu
Global Navigation Satellite System
positioning
positioning accuracy
navigation
MDNS
unmanned transport
transport safety
Opis:: Pozycjonowanie GNSS i nawigacja mają znaczny wpływ na życie codzienne. Jednym z głównych problemów nawigacji współczesnej, zarówno systemów transportowych załogowych, jak i bezzałogowych jest problem bezpieczeństwa transportu. W celu zwiększania dokładności pozycjonowania transportu wykorzystuje się technologię DGNSS – Różnicowy GNSS, która opiera się na instalacji nieruchomej stacji bazowej przy użyciu znanej pozycji XY z dokładnością geodezyjną. W artykule tym rozpatrywane są zasady architektury MDGNSS – Przenośnego DGNSS, w którym stacja bazowa wykorzystuje konwencjonalny przenośny komputer, obliczający dokładną lokalizację XY poprzez analizę statystyczną wyników jej pozycjonowania w ciągu kilkudziesięciu minut.
System The GNSS positioning and navigation have a significant impact on daily life. One of the main problems of modern navigation both manned and unmanned transport systems is a problem of transport safety. To improve the accuracy of positioning of transport used DGNSS technology – Differential GNSS, which is based on setting a fixed base station with a known geodetic position XY. In this article we consider the principles of MDGNSS architecture – Mobile Differential GNSS, in which a base station uses a conventional laptop, defining your location XY accurately, through statistical analysis of its positioning results for several tens of minutes.
Źródło:: Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 6; 135-141
1509-5878
2450-7725
Pojawia się w:: Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 76.

Tytuł:: Determination of flying objects position
Autorzy:: Dzunda, M.
Dzurovcin, P.
Melniková, L.
Powiązania:: https://bibliotekanauki.pl/articles/116434.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Electronic Chart Systems
flying objects (FO)
flying objects position
Matlab
non-flying objects
positioning
Global Navigation Satellite System (GNSS)
dilution of precision (DOP)
Opis:: This paper describes various methods of flying object positioning with the emphasis on their accuracy. Based on the accomplished analysis, we will select the most appropriate method to determine the position of a flying object for relative navigation purposes. The primary criterion for choosing a positioning method is the accuracy of distance measurement within users working in the aviation communications network. The results presented in the paper have been based on mathematical modelling and computer simulation performed in the Matlab programming environment. The results obtained can be used to navigate flying or non-flying objects that work in the air communications network.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 2; 423-428
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 77.

Tytuł:: An experimental identification of multipath effect in GPS positioning error
Autorzy:: Rumora, I.
Sikirica, N.
Filjar, R.
Powiązania:: https://bibliotekanauki.pl/articles/116056.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Pseudo Random Noise (PRN)
accuracy
GPS positioning errors
multipath effect
Base-band Processing Domain (BPD)
Navigation Processing Domain
Global Positioning System (GPS)
Global Navigation Satellite System (GNSS)
Opis:: The analysis of the GPS multipath effects in maritime environment is constrained with the practice of traditional GPS receiver design, that prevents access to GPS signals in Base-band Processing Domain. Here we propose and validate a simple method for experimental identification of multipath effect in Navigation Processing Domain, based on spectral characterisation of time series of GPS positioning errors.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 1; 29-32
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 78.

Tytuł:: Analysis of tropospheric contribution to GPS positioning error during tropospheric cyclone Marcus in 2018
Autorzy:: Sikirica, N.
Horvat, M.
Špoljar, D.
Rumora, I.
Powiązania:: https://bibliotekanauki.pl/articles/116217.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
Global Positioning System (GPS)
cyclone Marcus
positioning
Navigation and Timing (PNT)
Port Darwin
NASA Earth Observatory
tropospheric correction
Software-Defined Radio (SDR)
Opis:: GNSS positioning performance assessment is essential for sustainable development of a growing number of GNSS-based technology and socio-economic applications. Case-studies of GNSS positioning performance in critical environments and applications scenarios reveals vulnerabilities of the GNSS Positioning, Navigation, and Timing (PNT) services, and suggest mitigation techniques and GNSS application risk containment. Here we address the case of GPS positioning performance during a devastating tropical cyclone Marcus that hit the greater area of the city of Darwin, Australia in 2018. We identified specific statistical properties of time series of tropospheric contribution to GPS northing, easting, and vertical positioning error that may contribute to understanding of tropospheric effects on GPS positioning performance during a massive weather deterioration in maritime and coastal areas, and analysed their adversarial effects on GNSS-based maritime applications.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 2; 343-348
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 79.

Tytuł:: Model of the random phase of signal E6 of the Galileo Satellite Navigation System
Autorzy:: Džunda, M.
Čikovský, S.
Melniková, L.
Powiązania:: https://bibliotekanauki.pl/articles/24201441.pdf
Data publikacji:: 2023
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: model
simulation
random phase
signal E6
satellite navigation system
Galileo
random phase model
useful signal
Opis:: The aim of this paper was to describe the random phase of the E6 signal, the Galileo satellite navigation system. Based on the available information, mathematical models of the measurement signals of the Galileo system were created. The frequencies of individual signals were determined and their structure visualized. A block diagram of the generation of individual signals is also shown. The main contribution of the paper is the creation of a random phase model of the E6 signal from the Galileo system. In accordance with the technical data of the Galileo system, the parameters of the random phase model were determined. The simulation results confirmed that the frequency instability of the continuous signal E6 n received from the satellite is a stationary process. The short-term stability of the frequency ranges from 10-13 to 10-14. The simulation results confirmed that the Doppler effect significantly affects the random phase of the E6 signal. This phenomenon can affect the results of navigation measurements using the E6 signal. The modeling and simulation results of the random phase of the E6 signal presented in the paper can be used to evaluate the immunity of the Galileo navigation system to interference.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 61--68
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 80.

Tytuł:: Reconstruction of geomagnetic event as observed in Northern Adriatic region and Its correlation with GPS single-frequency positioning deviations
Autorzy:: Brčić, D.
Ćelić, J.
Valčić, S.
Powiązania:: https://bibliotekanauki.pl/articles/116009.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
geomagnetic event
Northern Adriatic
Global Positioning System (GPS)
positioning deviations
positioning
Navigation and Timing (PNT)
Total Electron Content (TEC)
Classification and Regression Trees (CART)
Opis:: Space weather effects are generally recognized as causes of degradation of satellite positioning, navigation and timing (PNT) services. We analyze GPS position estimation error during a geomagnetic storm, focusing on manifestations of geomagnetic processes. The position estimation error was analyzed in terms of GPS coordinates’ deviations (latitude, longitude and height) from their reference values. The storm’s impact was studied in the Northern Adriatic region where GPS observables from two Global Navigation Satellite System (GNSS) reference stations were analysed. Geomagnetic indices were elaborated, comprising readings from interplanetary, magnetospheric and geomagnetic observatories. Total Electron Content (TEC) on both stations was computed using dual frequency GPS pseudorange observables. The experiment was to reconstruct the movement of geomagnetic disturbances entering the geospace, reaching the earth’s surface. The aim was to correlate possible space weather manifestation on satellite positioning performance in terms of positioning error. Regularities in changes in positioning deviations were identified with relation to influential indices. The research offered a possibility of experimental positioning deviations assessment as well as forecasting. Evaluation of generated rudimentary Classification and Regression Trees (CART) models showed that the risk of satellite positioning errors could be assessed and predicted considering absolutes, as well as changes in values of geomagnetic indices. During the research process, several activities emerged as preferable continuation of the work, with the aim of further development of predictive models and the complement of space weather scenarios and their consequences on navigational systems. Along with summarized results, they are outlined in the conclusion section.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 2; 349-357
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 81.

Tytuł:: Application of 3-D Velocity Measurement of Vessel by VI-GPS for STS Lightering
Autorzy:: Yoo, Y.
Pedersen, E.
Tatsumi, K.
Kouguchi, N.
Arai, Y.
Powiązania:: https://bibliotekanauki.pl/articles/117175.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
Global Positioning System GPS
Vessel Velocity
STS Lightering
3D Velocity Measurement
Ship-to-Ship (STS) Operation
Liquefied Natural Gas (LNG)
Kinematic GPS (KGPS)
Opis:: A lightering operation is a type of Ship-To-Ship (STS) operation where two ships are together in open waters and transfer the cargo e.g. crude oil, LNG. High skills and experience are required by the human operators as no relevant equipment for determining the relative speeds and distances with sufficient accuracies has been implemented. The officer in charge of an STS lightering takes the decision on adequate maneuvering orders based on predominantly visual observations during the final approach. Landing on all fenders simultaneously is an objective in order to minimize ship-fender contact forces, but this is rather difficult to achieve in practice even in calm sea due to the effect of hydrodynamic interaction when the ships are closing in. Furthermore, currents that are present in the lightering zone add to the operational complexity. A field measurement experiment has been carried out with a Velocity Information GPS (VI-GPS) system installed onboard a ferry approaching port for berthing which is similar to an STS lightering. The paper proposes to apply VI-GPS as input sensor to a decision-support and guidance system aiming to provide accurate velocity information to the officer in charge of an STS operation. It is argued that DOP of VI-GPS is related to the velocity error.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 1; 43-48
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 82.

Tytuł:: Conception of EGNOS Integrity Data Utilization in ENC Systems
Autorzy:: Bilewski, M.
Zalewski, P.
Powiązania:: https://bibliotekanauki.pl/articles/117265.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
EGNOS
Electronic Chart Display and Information System (ECDIS)
Marine Vessel Protection Area (MVPA)
Electronic Navigational Charts (ENC)
Full Mission Bridge Simulator (FMBS)
integrity
Opis:: The paper presents the processing of EGNOS integrity data received either directly from the satellite network or the Sisnet internet relay. Relationship between the individual frames in EGNOS messages has been described. Usefulness of these data was indicated by the three examples. In the first example data form EGNOS was used to compare integrity parameters and the calculated position error. In further examples the simulated position with error and calculated integrity parameters were implemented together. The results were presented in two ways: with use of dedicated program which presents only ship contours (the one not covering GNSS uncertainty and the one covering this uncertainty called Marine Vessel Protection Area) and as a layer in existing ECDIS.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 3; 389-393
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 83.

Tytuł:: Foundations of GNSS spoofing detection and mitigation with distributed GNSS SDR receiver
Autorzy:: Filić, M.
Powiązania:: https://bibliotekanauki.pl/articles/117522.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
positioning
Navigation and Timing (PNT)
cyber attack
Spoofing Detection and Mitigation (SDM)
GNSS SDM
spoofing
GNSS receiver
GNSS spoofing attack
Opis:: GNSS spoofing is an intentional and malicious action aimed at degrading and suppressing GNSS Positioning, Navigation, and Timing (PNT) services. Since it affects data and information segment of GNSS, it is considered a GNSS information (cyber‐) security attack. Considering a significant and powerful threat, GNSS spoofing should be treated seriously to avoid damage and liabilities resulting from disruptions of GNSS PNT services. Here the GNSS position estimation procedure is examined for potential vulnerabilities, and the nature of and motivation for GNSS spoofing attacks exloiting the vulnerabilities assessed. A novel GNSS Spoofing Detection and Mitigation (GNSS SDM) method is proposed within the established computational and communication infrastructure, that allows for successful overcoming and classification of GNSS spoofing attacks. Proposed method is applicable without requirements for core GNSS modification, and leaves majority of user equipment easily transferable to the GNSS spoofing‐free environment. Potential GNSS spoofing effects and GNSS anti‐spoofing opportunities in maritime sector were given a particular attention.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 4; 649-656
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 84.

Tytuł:: A South Pacific Cyclone-caused GPS positioning errorand Its impact on remote oceanic island communities
Autorzy:: Filić, M.
Filjar, R.
Powiązania:: https://bibliotekanauki.pl/articles/116266.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
South Pacific
tropical cyclones
Software-Defined Radio (SDR)
GPS positioning error
GNSS positioning performance
remote oceanic inland communities
GNSS resilience
Opis:: Satellite navigation gains importance in sustainable development of modern civilisation. With the increasing number of GNSS-based technology and socio-economic systems and services, satellite navigation has become an essential component of national infrastructure. This calls for novel requirements on GNSS positioning perfomance, and increasing need for resilient GNSS development. Here we examined the impact of rapidly developing tropical cyclone on GPS positioning performance degradation, and the resulting impact on oceanic non-navigation and navigation GPS applications. We presented the methodology for indirect simulation-based GPS positioning performance evaluation through utilisation of experimental GPS observations, GNSS Software-Defined Radio (SDR) receiver, and a statistical analysis and framework we developed in the R environment for scientific computing. We identified alteration of GPS positioning error components time series statistical properties, and discuss the potential impact on GPS-based services essential for remote oceanic island communities. Manuscript concludes with the summary of findings, proposal for recommendations on improved GNSS resilience, and an outline for future research.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 4; 663-670
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 85.

Tytuł:: Badanie niezawodności satelitarnych systemów teleinformatycznych w warunkach propagacji w atmosferze ziemskiej
The study of satellite telematics systems reliability for propagation in the earths atmosphere
Autorzy:: Wilk-Jakubowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/251112.pdf
Data publikacji:: 2016
Wydawca:: Instytut Naukowo-Wydawniczy TTS
Tematy:: propagacja
satelitarny system teleinformatyczny
warunki atmosferyczne
COST IC0802
propagation
satellite data communications system
atmospheric conditions
Opis:: Szereg badań dotyczących wpływu warunków atmosferycznych na niezawodność satelitarnych systemów teleinformatycznych przeprowadzono na Politechnice Świętokrzyskiej w Kielcach w ramach europejskiego projektu badawczego COST IC0802 [5]. Część z nich, zawierającą końcowe wyniki badań zamieszczono w niniejszym artykule. Z uwagi na zmienność parametrów meteorologicznych w celu określenia niezawodności systemu posłużono się metodami statystycznymi.
Paper discussed the impact of various (climatic and atmospheric) conditions on the telematics systems reliability. Particular attention was paid to determine the probability of staying of the telematic system in the distinguished availability classes.
Źródło:: TTS Technika Transportu Szynowego; 2016, 12; 364-367
1232-3829
2543-5728
Pojawia się w:: TTS Technika Transportu Szynowego
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 86.

Tytuł:: The test programme concerning aircraft positioning and traffic monitoring – part II
Autorzy:: Jafernik, H.
Powiązania:: https://bibliotekanauki.pl/articles/198691.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:: GPS
PPP method
accuracy analysis
aircraft trajectory
monitoring
safety
risk
threats
Global Navigation Satellite System
GNSS
metoda PPP
analiza dokładności
trajektoria samolotu
monitorowanie
bezpieczeństwo
ryzyko
zagrożenia
Globalny System Nawigacji Satelitarnej
Opis:: This paper presents the results of studies on the determination of an aircraft’s trajectory and positioning accuracy. The PPP method was applied to determine the aircraft’s position in kinematic mode for code observations in the GPS system. Computations were executed in the “PPP_KINEMTIC” software, whose source code was written using the Scilab 5.3.2 platform. The PPP_KINEMTIC software allows for the latitude coordinate to be estimated with accuracy between 1 and 6 m, the longitude coordinate to be estimated with accuracy between 0.5 and 2.5 m, and the ellipsoidal height to be estimated with accuracy between 1 and 7 m. The average value of the MRSE term equals 5 m with a magnitude between 1 and 8.5 m. In the paper, general libraries of the PPP_KINEMTIC application were presented and the PPP method was characterized too.
Źródło:: Zeszyty Naukowe. Transport / Politechnika Śląska; 2016, 93; 41-48
0209-3324
2450-1549
Pojawia się w:: Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 87.

Tytuł:: Determination of specific fuel consumption of IC engine in transient conditions
Wyznaczanie jednostkowego zuzycia paliwa silnika spalinowego w warunkach nieustalonych
Autorzy:: Grzelka, J.
Powiązania:: https://bibliotekanauki.pl/articles/792124.pdf
Data publikacji:: 2012
Wydawca:: Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:: combustion engine
spark ignition engine
fuel consumption
transient condition
motor vehicle
satellite navigation system
fuel injection system
vertical profile
route
telecommunication
Źródło:: Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 1
1641-7739
Pojawia się w:: Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 88.

Tytuł:: The concept of time in navigation
Autorzy:: Weintrit, A.
Powiązania:: https://bibliotekanauki.pl/articles/116645.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: time
marine navigation
positioning
Navigation and Timing (PNT)
Greenwich Mean Time (GMT)
Universal Time Coordinated (UTC)
International Atomic Time TAI
Global Navigation Satellite System
history of navigation
Opis:: The article discusses the concept of time in navigation, especially in marine navigation, as well as selected time measures, among others: Greenwich Mean Time (GMT), Universal Time Coordinated (UTC), International Atomic Time TAI (Temps Atomique International), GPST (Global Positioning System Time) eLoran Time and interrelation between these measures. Understanding how time is involved in navigation, and using it, is one of the navigator's most important duties. Nowadays we have satellite navigation to help us know where we are. These satellites contain several very precise and accurate clocks, because time and location are completely and totally inter-related in satellite navigation. There is growing interest internationally concerning the vulnerability Global Navigation Satellite Systems (GNSS) to natural and man-made interference, plus the jamming and spoofing of their transmissions. These vulnerabilities have led to a demand for sources of resilient PNT (Positioning, Navigation and Timing) [16], including a robust means of distributing precise time nationally and internationally.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 2; 209-219
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 89.

Tytuł:: Logistic map-encrypted Chaotic Ranging code as a proposed alternative to GNSS PRN Pseudorange Code
Autorzy:: Filić, M.
Dimc, F.
Powiązania:: https://bibliotekanauki.pl/articles/117574.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
Chaotic Ranging Code (CRC)
Pseudo-Random Noise (PRN)
Gold PRN Code
cyber attack
GNSS spoofing attack
cyber security
GNSS PRN Pseudorange Code
Opis:: Pseudo-Random Noise (PRN) Gold code was selected for utilisation as the Global Navigation Satellite System (GNSS) pseudo-range measurement code sequence. Recent studies revealed a potential security vulnerability issue due to the Gold PRN code utilisation in a GNSS-related cyber-attack known as GNSS spoofing. Here a PRN code construction method based on chaotic-form logistic map is proposed as an alternative to the existing Gold code practice. Dubbed Chaotic Ranging Code (CRC), is a PRN code generation method that generates ranging code with orthogonal properties as good as, if not better, then those of the Gold PRN code, while assuming the encryption embedded in the proposed CRC code provides improved GNSS information security.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 587-590
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 90.

Tytuł:: Technologia GPS w procesie szkolenia Sił Zbrojnych RP
GPS technology in Polish Armed Forces training process
Autorzy:: Sabatowski, Z.
Powiązania:: https://bibliotekanauki.pl/articles/347330.pdf
Data publikacji:: 2009
Wydawca:: Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:: GPS
system nawigacji satelitarnej
system NAVSTAR
nawigacja satelitarna
Siły Zbrojne Polski
szkolenie wojskowe
NAVSTAR system
Wyższa Szkoła Oficerska Wojsk Lądowych
satellite navigation system
satellite navigation
Polish Armed Forces
military training
Land Forces Military Academy
Opis:: W artykule przedstawiono wykorzystanie technologii GPS w procesie szkolenia Sił Zbrojnych RP. Zaprezentowano krótki opis systemu GPS ze szczególnym uwzględnieniem jego poszczególnych komponentów na podstawie informacji z innych źródeł W. Garszka, W. Górala, J. Narkiewicza. Pokazano możliwości wykorzystania GPS w wojsku polskim ze szczególnym uwzględnieniem jego wykorzystania w wojskach lądowych oraz zapoznano z typami odbiorników GPS wykorzystywanymi podczas zajęć programowych i dodatkowych w WSOWL.
The article discusses how to employ GPS technology in the process of the Polish Armed Forces training. A brief description of the GPS system with special emphasis put on its individual components is presented on the basis of information from other sources, such as W. Garszka, W. Góral and J. Narkiewicz. In addition, various opportunities for employing GPS technology in the Polish Armed Forces, particularly in the Land Forces, are shown and the different types of GPS receiver sets used during curricular classes as well as additional ones at WSOWL are presented.
Źródło:: Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki; 2009, 2; 65-73
1731-8157
Pojawia się w:: Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 91.

Tytuł:: Initial evaluation of usefulness of geodetic coordinates obtained with the use of RTK-GPS corrections generated by Malopolski Satellite Positioning System
Autorzy:: Siejka, Z.
Powiązania:: https://bibliotekanauki.pl/articles/225052.pdf
Data publikacji:: 2007
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: GPS
satelita GPS
system pozycjonowania obiektów
RTK GPS
pomiary GPS-RTK
Małopolski System Pozycjonowania Satelitarnego
technika RTK
pomiary geodezyjne
GPS satellite
Global Positioning System
real-time measurements
real time kinematic
Małopolski Satellite Positionning System
engineering surveying
Opis:: The paper presents attempt to find the answer to the question, if the experimentally functioning in Matopolska and Silesia system of reference stations is useful to determine geodetic coordinates, using real time technology when the final result of the measurement is known immediately. To obtain the aim multiple measurements were performed using the RTK-GPS technology on selected points of the POLFER network using corrections generated by the System. On a basis of empirical results of measurements, the evaluation of the usefulness of the system for geodetic applications was performed. Reference stations network of the system ASG-PL which was tested, is one of the so called terrestrial differential systems aiding measurements GPS-RTK (real time kinematic). Networks of the type are very often build in different countries and have national or even continental character.
Źródło:: Reports on Geodesy; 2007, z. 1/82; 309-315
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 92.

Tytuł:: Application of global navigation satellite system and hydroacoustic techniques to safety of inland water navigation
Zastosowanie globalnych nawigacyjnych systemów satelitarnych oraz współczesnych technik hydroakustycznych w bezpiecznej nawigacji śródlądowej
Autorzy:: Popielarczyk, D.
Powiązania:: https://bibliotekanauki.pl/articles/224351.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: nawigacja śródlądowa
systemy satelitarne
mapy batymetryczne
bezpieczeństwo żeglugi śródlądowej
baza śródlądowych przeszkód podwodnych
Szlak Wielkich Jezior Mazurskich
global navigation satellite system (GNSS)
hydrography
Interactive Inland Underwater Objects Dstabase (IIUOD)
inland navigation
Opis:: The paper presents description of application of integrated, Global Navigation Satellite System (GNSS) and hydroacoustic technologies, for elaboration of actual bathymetric chart and creation of an Inland Interactive Underwater Objects Base (IIUOD). In the paper the description of some integrated bathymetric experiments conducted on Great Mazurian Lakes is presented. A small area of Lake Sniardwy, the largest lake in Poland, has been measured using modern technology with precise satellite positioning and hydrographic techniques. The idea and first results of the implemented base is analyzed and described. The database (IIUOD) is created for visualization of dangerous underwater objects and finally for safety of inland water navigation.
Artykuł przedstawia zastosowanie zintegrowanych technik satelitarnego pozycjonowania GNSS i systemu hydroakustycznego do opracowania aktualnych map batymetrycznych oraz utworzenia Interaktywnej Bazy Śródlądowych Przeszkód Podwodnych w celu zapewnienia bezpieczeństwa żeglugi na Szlaku Wielkich Jezior Mazurskich. W artykule opisano eksperymentalne prace pomiarowe wykonane na jeziorze Śniardwy z zastosowaniem satelitarnego pozycjonowania DGPS/EGNOS oraz systemu hydrograficznego. Przedstawiono także koncepcję oraz wyniki utworzenia eksperymentalnej bazy geodanych o przeszkodach podwodnych. Opracowana baza IBŚPP umożliwia wizualizację kształtu dna oraz przeszkód. Pomaga poprawić bezpieczeństwo żeglugi śródlądowej i uprawiania sportów wodnych na Wielkich Jeziorach Mazurskich.
Źródło:: Archives of Transport; 2011, 23, 2; 191-190
0866-9546
2300-8830
Pojawia się w:: Archives of Transport
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 93.

Tytuł:: New satellite navigation systems and moderenization of current systems, why and for whom?
Autorzy:: Januszewski, J.
Powiązania:: https://bibliotekanauki.pl/articles/359026.pdf
Data publikacji:: 2012
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: GPS system
GLONASS system
Galileo system
satellite block
satellite signals
Opis:: Information about user’s position can be obtained from specialized electronic position-fixing systems, in particular, Satellite Navigation Systems (SNS) as GPS and GLONASS, and Satellite Based Augmentation Systems (SBAS) as EGNOS, WAAS, MSAS. All these systems are known also as GNSS (Global Satellite Navigation System). As the number of GPS and GLONASS satellites visible by the user is sometimes in restricted area not sufficient, and these SNS cannot provide information about integrity, there is one service for civil users only etc., new systems, global as well as regional, must be constructed. The last years gave a rise to many important changes in the operational status and practical exploitation of all these systems. New SNS as Galileo in Europe and Compass (Beidou) in China, new SBAS as GAGAN in India and SDCM in Russia, new regional SNS as IRNSS in India and QZSS in Japan are actually under construction. Additionally the new satellite blocks as GPS IIF and III, and GLONASS K1 and K2, the new signals as GPS L5 and L1C, and GLONASS LC3OC and L1OC, the new services and possible applications of the future system Galileo are presented in this paper.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 32 (104) z. 2; 58-64
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 94.

Tytuł:: GNSS positioning error change-point detection in GNSS Positioning Performance Modelling
Autorzy:: Filić, M.
Filjar, R.
Powiązania:: https://bibliotekanauki.pl/articles/117469.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Global Navigation Satellite System (GNSS)
positioning
Navigation and Timing (PNT)
GNSS Positioning Performance Modelling
GNSS Positioning Error Change-point Detection
GNSS Positioning Performance
GNSS Resilience
GNSS Utilisation Risk Mitigation
GNSS Positioning Performance Degradation
Opis:: Provision of uninterrupted and robust Positioning, Navigation, and Timing (PNT) services is essential task of Global Navigation Satellite Systems (GNSS) as an enabling technology for numerous technology and socio-economic applications, a cornerstone of the modern civilisation, a public goods, and an essential component of a national infrastructure. GNSS resilience may be accomplished only with complete understanding of the causes of GNSS positioning performance disruptions and degradations, presented in a form of applications- and scenarios-related models. Here the application of change-point detection methods is proposed and demonstrated in a selected scenario of a fast-developing ionospheric storm’s impact on GNSS positioning performance, as a novel contribution to forecasting GNSS positioning performance model development and GNSS utilisation risk mitigation.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 575-579
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 95.

Tytuł:: Lotniczy skaning laserowy (LiDAR-ALS) jako źródło danych do obliczeń stateczności skarp na terenach zadrzewionych i zakrzewionych
Airborne laser scanning (LiDAR-ALS) as a source of data for calculations of escarpment stability in wooded and bushy areas
Autorzy:: Piechota, A.
Powiązania:: https://bibliotekanauki.pl/articles/2075700.pdf
Data publikacji:: 2017
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: lotniczy skaning laserowy
ALS
skaning laserowy
LiDAR
globalny system nawigacji satelitarnej
GNSS
cyfrowy model terenu
DTM
pomiar nachylenia
kontrola jakości
Airborne Laser Scanning
Light Detection And Ranging
Global Navigation Satellite System
digital terrain model
slope measurement
quality control
Opis:: The paper discusses the problem of quick acquire height data for calculation of escarpment stability. In past the slope of profile was obtainedfrom classical land survey methods (like Total Station, GNSS, etc.), carto- metric measurement on maps or measurements based on a Digital Terrain Modelfrom aerial photography. Now we have a new method that is Airborne Laser Scanning (LiDAR-ALS). In 2011-2014 almost all country was measured in this method. The declared accuracy of height measurement on the durable surfaces is about 0.10-0.15 m. Author compared this method with classical method Global Navigation Satellite System - Real Time Network (GNSS-RTN) on two wooded and bushy areas. The comparison was based on the measurement characteristic points on the profiles and acquisition of height data from LiDAR-ALS data. Data in this method were obtained in two ways: from point cloud and from DTM createdfrom this point cloud. In the next step, height differences were calculated and these data were subjected to basic statistical calculations. The result of the study was a mean error of height data from LiDAR-ALS and conclusions about its usefulness in acquire height data for calculation of escarpment stability.
Źródło:: Przegląd Geologiczny; 2017, 65, 10/2; 811--816
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 96.

Tytuł:: EGNOS performance along finnish coast
Autorzy:: González, R.
Lacarra, E.
López, M.
Heikonen, K.
Powiązania:: https://bibliotekanauki.pl/articles/2063972.pdf
Data publikacji:: 2021
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: EGNOS
European Geostationary Navigation Overlay Service
International Electrotechnical Commission
Satellite Based Augmentation System
Maritime community
finnish coast
finnish waters
Opis:: The purpose of this article is on one side to inform Maritime community about the ongoing activities adopted for the provision of EGNOS (European Geostationary Navigation Overlay Service) L1 maritime service and IEC standardisation process to produce a new IEC (International Electrotechnical Commission) standard for SBAS maritime receivers and on the other side, to demonstrate the benefits of the SBAS system in Europe, EGNOS (European Geostationary Navigation Overlay Service) in high latitudes to Maritime community.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 3; 551--556
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 97.

Tytuł:: Potential of Polish R&D industry in the context of prototyping, design, development and control of a dedicated national satellite SAR system for marine ecosystem monitoring Technical paper - preliminary study
Autorzy:: Chybicki, A.
Łubniewski, Z.
Powiązania:: https://bibliotekanauki.pl/articles/332762.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Akustyczne
Tematy:: SAR
satellite
system
observations
maritime
Opis:: Space technology is currently one of the most important elements in the advance of information societies and knowledge-based economies all over the world. The European Space Agency (ESA) is in the focal point of European space activities, while the European Union provides strong financial support for the development of space technologies and applications in its flagship programs. In a domestic scope, the Polish Space Agency (POLSA) is a national aeronautics entity responsible for activities related to development of technologies of the national space sector. Recently, one of the activities which POLSA aims to establish, is the programme of building a system of satellite SAR observations dedicated for Polish users; such as administration, civilian services, and Polish scientific and research entities, that would expand potential use of satellite technologies among numerous Polish beneficiaries. In the context mentioned above, the paper describes the architecture and functional components of an exemplary satellite SAR system, along with the potential of Polish entities to develop such technology.
Źródło:: Hydroacoustics; 2016, 19; 49-54
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 98.

Tytuł:: Application of satellite techniques in geodesy and navigation in Poland
Autorzy:: Baran, Lubomir W.
Oszczak, Stanisław
Zieliński, Janusz B.
Powiązania:: https://bibliotekanauki.pl/articles/703201.pdf
Data publikacji:: 2008
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: geodesy
reference frame
Global Positioning System – GPS
satellite techniques
satellite navigation
Galileo navigation system
Opis:: Contemporary geodesy is of global dimension. The reference frame is defined as the geocentric system with parameters related to the entire Earth body, e.g. the axis of rotation, and global geoid. The unified time scale is determined for the whole Earth territory as well. International services using different satellite techniques are engaged in the determination of this frame. Particularly important is the Global Positioning System GPS, which is the most important geodetic tool nowadays. In Poland a number of geodetic observatories are working in the frame of the international networks, Polish scientific groups contribute to the advancement of science in this domain. For the practical applications we are using the local networks that again are constructed with satellite techniques. In Europe the regional network EUREF exists while its part EUREF-POL and densification POLREF are in Poland. The modern network ASG-EUPOS is under construction. The GPS technique is used for surveying and navigation and for the positioning in motion, which is in-between the preceding traditional methods. Differential augmentation methods are designed to improve GPS signals such as DGPS and EGNOS. The new European satellite navigation system Galileo is in development. Poland is a member and coowner of this system. A number of Polish research institutions are working on new methods of the practical application of GNSS.
Źródło:: Nauka; 2008, 4
1231-8515
Pojawia się w:: Nauka
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 99.

Tytuł:: Future egnos APV procedures implementation in Poland as a chance for small and medium airports development
Implementacja procedur EGNOS APV w Polsce szansą rozwoju małych i średnich portów lotniczych
Autorzy:: Kaleta, W. Z.
Powiązania:: https://bibliotekanauki.pl/articles/952873.pdf
Data publikacji:: 2015
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:: EGNOS
satellite based augmentation system (SBAS)
Approach with Vertical Guidance
signal in space
Satelitarne Systemy Wspomagające
Podejście z Prowadzeniem Pionowym
SIS
Opis:: This paper presents original researches and analysis of EGNOS (European Geostationary Navigation Overlay Service) due to readiness for Approach Procedures with Vertical Guidance (APV) implementation and development for small and medium airports on Polish territory according to present situation in the western part of Europe. Improving safety, availability, usefulness and cost-effectiveness for aviation transport sector. This work carries out a detailed analysis of the parameters describing and characterizing each augmentation navigational satellites system: accuracy, integrity, continuity and availability. Faults has been pointed out and shortcomings of EGNOS factors according to improvement air transport safety in the most sensitive landing phases. The validated Approach Procedures with Vertical Guidance, using Satellite-Based Augmentations System is paving the way for flying Instrument Landing System type approaches to small and medium airports in the western part of Europe independently of groundbased infrastructure. The instrument APV procedures consists of four phases of flight: Initial Approach, Intermediate Approach, Final Approach and Missed Approach – parts of approach segments. SBAS (Satellite Based Augmentation System) seems to be the first satellite based system that can support FAS (Final Approach Segment) which is the most “sensitive”, important and dangerous part of the instrumental approach procedures based on aircraft’s avionics equipment most time without vertical and horizontal visibility. EGNOS augments the GPS system in order to meet the necessary: accuracy, integrity, availability, continuity envisaged for APV procedures [9]. APV procedure based on EGNOS system is recently the only low-cost chance for small and medium Polish airports development in the aviation transport sector, according to extension and improving augmentation system factors mentioned above.
W artykule przedstawione zostały oryginalne badania i analiza system EGNOS (European Geostationary Navigation Overlay Service) w odniesienu do implementacji i rozwoju Procedur Podejścia do Lądowania z Prowadzeniem Pionowym w małych i średnich portach lotniczych na terenie Polski, biorąc pod uwagę stan w Europie Zachodniej. Poprawiając tym samym bezpieczeństwo, dostępność, użytkowość i koszty eksploatacji w sektorze transport powietrznego. Praca ta przedstawia dokładną analizę czynników opisujących każdy system wspomagania satelitarnego: dokładność, wiarygodność, ciągłość I dostępność. Niedoskonałości systemu zostały przedstawione w odniesieniu do poprawy bezpieczeństwa transportu powietrznego w najdelikatniejszej fazie lotu – podejścia do lądowania. Powyższa procedura z wykorzystaniem system wspomagającego otwiera szansę rozwoju małym i średnim portom lotniczym w Europie Zachodniej uniezależniając podejście do lądowania od infrastruktury lotniskowej. Podejście instrumentalne APV składa się z czterech faz lotu: Podejście Początkowe, Podejścia Pośredniego, Podejścia Końcowego, Odlotu po Nieudanym Podejściu. System wspomagania satelitarnego, jako pierwszy wspomóc może także fazę Podejścia Końcowego, która jest najniebezpieczniejszą, najważniejszą fazą opartą na urządzeniach pokładowych w większości bez widoczności terenu. EGNOS wspomaga działanie GPS poprawiając niezbędne czynniki: dokładność, wiarygodności, dostępności, ciągłości przewidzianych w procedurach APV. Podejście oparte o EGNOS jest jedyną, niedrogą szansą dla małych i średnich polskich portów lotniczych, na rozwój w sektorze transportu powietrznego w nawiązaniu do rozszerzenia i poprawy czynników wyżej wymienionych.
Źródło:: Prace Instytutu Lotnictwa; 2015, 3 (240); 18-26
0509-6669
2300-5408
Pojawia się w:: Prace Instytutu Lotnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 100.

Tytuł:: The use of the linear form of dynamical equations of the satellite attitude control system for its analysis and synthesis
Autorzy:: Moldabekov, Meirbek
Sukhenko, Anna
Shapovalova, Darya
Yelubayev, Suleimen
Powiązania:: https://bibliotekanauki.pl/articles/1839688.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: synthesis
stability analysis
attitude control system
satellite
Opis:: At present, the methods based on using linearized dynamical equations are applied for syn- thesis of an attitude control system of a satellite with nonlinear dynamics. Linearized equa- tions describe the satellite dynamics approximately, which is the main their disadvantage. This article shows that basing on the angular momentum theorem, the nonlinear dynamical equations of the satellite attitude control system can be represented in the form of linear differential equations with variable coefficients, which makes it possible to use engineering methods of stability analysis and analysis of transient quality in the process of synthesis of the satellite attitude control system.
Źródło:: Journal of Theoretical and Applied Mechanics; 2021, 59, 1; 109-120
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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