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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
Artykuł
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
Artykuł
Tytuł:
Preliminary results of studies of the monitoring for aircraft and vehicles based on GNSS
Autorzy:
Ćwiklak, J.
Jafernik, H.
Śledziński, J.
Powiązania:
https://bibliotekanauki.pl/articles/224861.pdf
Data publikacji:
2011
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
nawigacja satelitarna
GNSS
satellite navigation
Opis:
Presently a lot of countries carry out aviation tests of Automatic Dependent Surveillance - Broadcast ADB-S). The on-board GPS receiver is used as a basic source of information on position and time for that system. According to the CNS/ATM plan, traditional radars using by ATC will be replaced for ADB-S in the near future. One the vital elements of the system is Global Navigational Satellite System (GNSS). According to the project a research team is going to work out an aviation tracking system for control an air traffic and ground movement in the border area. Moreover, the team will examine the system in the areas of accuracy, range of tracking and reliability as well. The proposed system consists of three basic components: the positioning, airborne GNSS receivers, the transmission of data and the ground station. The research plan is carried out taking into account a variety of air operations, such as a takeoff, a route on a low height, approaching and landing. The idea of monitoring system for aircraft using satellite navigation systems is in line witch the concept of the use of GNSS in aviation, both in Europe and worldwide.
Źródło:
Reports on Geodesy; 2011, z. 2/91; 109-119
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
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
Artykuł
Tytuł:
Visibility and geometry of GPS and GLONASS
Autorzy:
Januszewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/320787.pdf
Data publikacji:
1999
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
satelitarne systemy nawigacyjne
satellite navigation systems
Opis:
Actually there are two world-wide satellite navigation systems - American GPS and Russian GLONASS. Distribution (%) of numbers of visible satellites and distribution (%) of GDOP (Geometric Dilution Of Precision) coefficient values for the observer at different latitude for different masking elevation angle for both systems are demonstrated in this paper.
Źródło:
Annual of Navigation; 1999, 1; 55-65
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary results of DGPS/DGLONASS aircraft positioning in flight approaches and landings
Autorzy:
Grzegorzewski, M.
Jaruszewski, W.
Fellner, A.
Oszczak, S.
Wasilewski, A.
Rzepecka, Z.
Kapcia, J.
Popławski, T.
Powiązania:
https://bibliotekanauki.pl/articles/320789.pdf
Data publikacji:
1999
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
satelitarne systemy nawigacyjne
satellite navigation systems
Opis:
The use of satellite navigation by aerial craft becomes more and more common. Practically every newly produced plane or helicopter has GPS receiver installed on board. This system becomes widely used because it is simple and highly reliable. To improve the Required Performance Navigation Parameters (RNP), namely, the accuracy, availability, continuity, and integrity of aircraft navigation, the integrated GPS and GLONASS techniques can be used. Users are especially interested in integrated GPS/GLONASS receivers. The appearance of new ASHTECH GG24 receiver on the market has made it possible to estimate the possibility of utilisation of this type of receivers in aircraft navigation. The main goal of performed flight trials was the use of those receivers in satellite-based approaches and landings. The authors of the report carried out an experiment aiming at data collection during flight and approach to landing of plane TS11 Iskra. The airport of Deblin was chosen as the test area. The precise trajectory of the aircraft was calculated in the global WGS'84 system of co-ordinates for subsequent positions during flight, at one-second intervals, with the use of RTK techniques in "post-processing" mode. The RTK positions were compared with DGPS/DGLONASS real-time positions and next, the estimation of real-time differential accuracy was done. The preliminary results of the accuracy analysis are given in the paper.
Źródło:
Annual of Navigation; 1999, 1; 41-53
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
Tytuł:
SNR of EGNOS satellites in Southern Baltic area
Autorzy:
Makar, A.
Powiązania:
https://bibliotekanauki.pl/articles/224414.pdf
Data publikacji:
2006
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
maritime navigation
navigational systems
EGNOS
satellite positioning
satellite navigation
DGPS
satellite geodesy
Opis:
Introduction to using EGNOS system made possible determining of position in navigation and measurement applications. High accuracy of determined position, at precision of system DGPS level, allowed for taking advantage of that system in hydrographic measurements. In article are presented observations from signals transmitted by EGNOS system satelIites in 2005, in the middle of operation activating, to protecting of hydrographic measurements at sea and inland areas.
Źródło:
Reports on Geodesy; 2006, z. 1/76; 281-285
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
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
Artykuł
Tytuł:
Snapshot RAIM algorithms availability in urban areas
Autorzy:
Nowak, A.
Specht, C.
Powiązania:
https://bibliotekanauki.pl/articles/320887.pdf
Data publikacji:
2006
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
RAIM
satelitarne systemy nawigacyjne
satellite navigation systems
Opis:
This paper presents some theoretical considerations concerned usage of Snapshot RAIM algorithms in city navigation. Influence of urban areas on RAIM Availability and Approximate Radial-Error Protected (ARP) is taken into consideration. Some results of numerical experiments are presented, too.
Źródło:
Annual of Navigation; 2006, 11; 73-88
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Survey of Radio Navigation Systems
Autorzy:
Gilski, P.
Stefański, J.
Powiązania:
https://bibliotekanauki.pl/articles/227025.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
radio navigation
radio communication
satellite navigation systems
radiofrequency identification
Opis:
At present, there is a growing demand for radio navigation systems, ranging from pedestrian navigation to consumer behavior analysis. These systems have been successfully used in many applications and have become very popular in recent years. In this paper we present a review of selected wireless positioning solutions operating in both indoor and outdoor environments. We describe different positioning techniques, methods, systems, as well as information processing mechanisms.
Źródło:
International Journal of Electronics and Telecommunications; 2015, 61, 1; 43-48
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigations on using GPS/RTK technique in displacement surveys
Autorzy:
Wyczałek, I.
Wójcik, M.
Powiązania:
https://bibliotekanauki.pl/articles/225346.pdf
Data publikacji:
2009
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
GPS
RTK
nawigacja satelitarna
badania
satellite navigation
surveys
Opis:
The survey technique using satellite navigation methods have already reached such level, that it can be used not only for position determination at any place on earth but they have the quality which makes it possible to take actions at higher demands in regard to thc accuracy. Such field of potentlal implementation is displacement survey especially at vast areas where classic methods based on angles and distances don't guarantee sufficient accuracies of the results. In regard to increasing possibilities of RTK technique, some tests of its accuracy have been performed in different places, which showed the reality of reaching standard deviation in less than 1 cm. Such assessment encourages to attempt the use of this techniąue to ineasure displacements. As a part of this work the methods for obtaining accurate results with RTK technique have been reviewed, our own procedure for measuring and calculation has been developed and series of tests have been performed along with a study of their accuracy. Factors which affect the accuracy of the measurement time were examined among others, the number of reference stations approximations and observations filtering, and the differential adjustment. The conclusions provide prospects for achieving the accuracy of the measurement of horizontal displacements of large objects with the average error of 2-3 mm.
Źródło:
Reports on Geodesy; 2009, z. 2/87; 427-435
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geometry of GPS and GLONASS for different number of operational satellites
Autorzy:
Januszewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/320847.pdf
Data publikacji:
2000
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
nawigacja
nawigacja satelitarna
radionawigacja
GPS
navigation
satellite navigation systems
radionavigation system
Opis:
Nowadays there are two world wide satellite navigation systems - American GPS and Russian GLONASS. Distribution (in per cent) and comparison (in per cent) of GDOP (Geometric Dilution Of Precision) coefficient values for different number of operational satellites for the observer at different latitude for different masking elevation angle for both systems are demonstrated in this paper.
Źródło:
Annual of Navigation; 2000, 2; 47-56
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 120

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