Temat: Global Positioning System - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: An influence of the covariance between single orbit parameters on the accuracy of observations of the pseudo-ranges and phase differences
Autorzy:: Skeivalas, Jonas
Paršeliūnas, Eimuntas
Putrimas, Raimundas
Šlikas, Dominykas
Powiązania:: https://bibliotekanauki.pl/articles/221830.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Global Positioning System
ephemeris
Doppler effect
dispersion
geodesy
Opis:: The possibilities to improve values of the satellite orbit elements by employing the pseudo-ranges and differences of carrier phase frequencies measured at many reference GPS stations are analysed. An improvement of orbit ephemeris is achieved by solving an equation system of corrections of the pseudo-ranges and phase differences with the least-squares method. Also, equations of space coordinates of satellite orbit points expressed by ephemeris at fixed moments are used. The relation between the accuracy of the pseudo-ranges and phase differences and the accuracy of the satellite ephemeris is analysed. Formulae for estimation of the influence of the ephemeris on the measured pseudo-ranges and phase differences and for prediction of the accuracy of the pseudo-ranges and phase differences were obtained. An influence of the covariance between single orbit parameters on the accuracy of the pseudo-ranges and phase differences is detected.
Źródło:: Metrology and Measurement Systems; 2020, 27, 1; 131-140
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Przeliczanie i transformacja współrzędnych pomiędzy układami odniesienia
On version and transformation of coordinates between reference systems
Autorzy:: Mendel, M.
Powiązania:: https://bibliotekanauki.pl/articles/235845.pdf
Data publikacji:: 2011
Wydawca:: Wojskowy Instytut Techniczny Uzbrojenia
Tematy:: geoida
GPS
układy współrzędnych
Global Positioning System
coordinate systems
Opis:: W artykule przedstawiono zagadnienia związane przeliczaniem i transformacją współ- rzędnych w odwzorowaniach kartograficznych. Zamieszczono gotowe wzory i algorytmy służące do realizacji zadań związanych z przeliczaniem i transformacją współrzędnych. Objaśniono również podstawowe pojęcia używane w geodezji i kartografii.
In the paper the issues concerning conversion and transformation of coordinates in map projections were presented. The formulae and the algorithms for carrying out the tasks connected with the conversion and the transformation of coordinates were quoted. The basic terms used in geodesy and cartography were also explained.
Źródło:: Problemy Techniki Uzbrojenia; 2011, R. 40, z. 119; 7-19
1230-3801
Pojawia się w:: Problemy Techniki Uzbrojenia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: ASI activities in CEGROP II framework: Discussion of the results
Autorzy:: Vespe, F.
Garramone, L.
Marzo, C.
Rutigliano, P.
Pacione, R.
Powiązania:: https://bibliotekanauki.pl/articles/224452.pdf
Data publikacji:: 2006
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: osuwiska
GPS
system pozycjonowania obiektów
CERGOP
landslides
Global Positioning System
Opis:: ASI/CGS contribution to CERGOP II project covered the following topics: landslide monitoring, production and quality check of zenith total delays estimated for a global as well as regional GPS networks devoted to meteorology applications, RTK and navigation tests, critical analysis of GPS long time series helpful for geodynamic as well atmospheric investigations. For what concern the landslides monitoring the two sites under investigation: Aliano and Avigliano are located in Basilicata region, (South of Italy). These sites are affected by a dramatic creep of the ground which in the past was the cause of severe damages to the buildings and roads in the areas. We will show the state of art of the activities comparing GPS with Perrnanent Scatter IN-SAR technique For what concern the routine production of ZTD we will show a critical comparisons of our solutions with radio balloon observations and a discussion about the assessment of their reliability. Finally the results of a navigation experiment by using differential correction provided by EUREF-NTRIP service will be shown.
Źródło:: Reports on Geodesy; 2006, z. 1/76; 201-215
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Wyznaczanie różnic wysokości z wykorzystaniem niwelacji satelitarnej
The height differences appointment using satellite leveling
Autorzy:: Dawidowicz, K.
Lamparski, J.
Świątek, K.
Powiązania:: https://bibliotekanauki.pl/articles/341241.pdf
Data publikacji:: 2008
Wydawca:: Uniwersytet Przyrodniczy we Wrocławiu
Tematy:: Globalny System Pozycyjny
niwelacja satelitarna
Global Positioning System
satellite leveling
Opis:: W pracy przedstawiono analizy dotyczące wpływu długości sesji obserwacyjnych GPS na wyniki wyznaczania różnic wysokości metodą niwelacji satelitarnej. W tym celu wykorzystano, przeprowadzone w ciągu kilku dni, ośmiogodzinne obserwacje wykonane na trzech punktach sieci testowej. Z przeprowadzonych analiz wynika, że sesje dwugodzinne mogą okazać się zbyt krótkie do wyznaczenia wysokości z dokładnością do 1–2 cm.
The paper presents analyses concerning the influence of length GPS observational session on heights differences appointment results with satellite leveling. In elaboration the eight-hour GPS observation, carried within several days, on three points of test networks were used. Carried analyses have exerted that the two-hour GPS session can be too short for points appointment with 1-2 cm accuracy.
Źródło:: Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum; 2008, 7, 1; 29-34
1644-0668
Pojawia się w:: Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: An Interactive Graphical User Interface Module for Soldier Health and Position Tracking System
Autorzy:: Swedan, Wesam F.
Al Issa, Huthifa A.
Aloqoul, Ayat
Alkofahi, Hadeel
Obeidat, Rahaf
Powiązania:: https://bibliotekanauki.pl/articles/2124771.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: graphical user interface
global positioning system
global system for mobile
bioinformatics
tracking system
Opis:: Soldiers are the backbone of any armed force. They usually lose their lives due to the lack of medical assistance in emergency situations. Furthermore, army bases face problems due to the inability to track soldiers’ locations in the field. Hence, this paper proposes an interactive graphical user interface module (IGUIM) for soldiers’ bioinformatics acquisition and emergency reaction during combat, a global positioning system (GPS) is used to track soldiers’ locations through a device carried by the soldier. Soldiers’ bioinformatics are gathered using health monitoring biosensors, bidirectional communication between the soldiers and the army base is established via a global system for mobile (GSM). The proposed interactive module aims to enumerate the soldiers on the battlefield within a database that easily facilitates health monitoring, position tracking and bidirectional communication with each soldier through their identification number. The proposed IGUIM will increase the rate of soldiers’ survival in emergencies, which contributes to preserving the human resources of the army during combat.
Źródło:: International Journal of Electronics and Telecommunications; 2022, 68, 3; 571-571
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Experimental studies on the relationship between HDOP and position error in the GPS system
Autorzy:: Specht, Mariusz
Powiązania:: https://bibliotekanauki.pl/articles/2052120.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Global Positioning System
GPS
Horizontal Dilution of Precision
HDOP
position error
Opis:: 2D position error in the Global Positioning System GPS depends on the horizontal dilution of precision (HDOP) and User Equivalent Range Error UERE. The non-dimensional HDOP coeffcient, determining the influence of satellite distribution on the positioning accuracy, can be calculated exactly for a given moment in time. However, the UERE value is a magnitude variable in time, especially due to errors in radio propagation (ionosphere and troposphere effects) and it cannot be precisely predicted. The variability of the UERE causes the actual measurements (despite an exact theoretical mathematical correlation between the HDOP value and the position error) to indicate that position errors differ for the same HDOP value. The aim of this article is to determine the relation between the GPS position error and the HDOP value. It is possible only statistically, based on an analysis of an exceptionally large measurement sample. To this end, measurement results of a 10-day GPS measurement campaign (900,000 fixes) have been used. For HDOP values (in the range of 0.6-1.8), position errors were recorded and analysed to determine the statistical distribution of GPS position errors corresponding to various HDOP values. The experimental study and statistical analyses showed that the most common HDOP values in the GPS system are magnitudes of: 0.7 ( = 0.353) and 0.8 ( = 0.432). Only 2.77% of fixes indicated an HDOP value larger than 1. Moreover, 95% of measurements featured a geometric coeffcient of 0.973 - this is why it can be assumed that in optimal conditions (without local terrain obstacles), the GPS system is capable of providing values of HDOP ≤ 1, with a probability greater than 95% (2). Obtaining a low HDOP value, which results in a low GPS position error value, calls for providing a high mean number of satellites (12 or more) and low variability in their numer.
Źródło:: Metrology and Measurement Systems; 2022, 29, 1; 17-36
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Investigate Bending Effect of Wearable GPS Patch Antenna with Denim and Polyester Fabric Substrate
Autorzy:: Radhakrishna, Kavinesh S.
Shakhirul, M. S.
Lee, Y. S.
Khairina, K. N.
Syafiqah, A. R. A.
Powiązania:: https://bibliotekanauki.pl/articles/27311855.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: denim and polyester fabric substrates
textile antenna
global positioning system (GPS)
Opis:: In high technologies today, wearable devices have become popular. Wearable technology is a body sensing system that supports application of health observance and tracking through a wearable Global Positioning System (GPS). The design of the patch antennas is highly significant for the brilliance of the wearable patch antennas. This paper focuses on analyzing the bending effect on return loss and frequency between three types of GPS patch antenna. Types of GPS patch antennas that have been designed in this project are with different substrates and different designs. The wearable patch antenna has been designed and analyse using CST software. As a result, able to analysis the reflection coefficient (S11), radiation patterns, and analytical approach for patch antenna bending effect were obtained.
Źródło:: International Journal of Electronics and Telecommunications; 2023, 69, 2; 225--231
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

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: 9.

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: 10.

Tytuł:: Automatic system for GPS tropospheric delay estimation, on-line GPS processing user service and analysis of the results
Autorzy:: Kruczyk, M.
Liwosz, T.
Rogowski, J. B.
Powiązania:: https://bibliotekanauki.pl/articles/224483.pdf
Data publikacji:: 2006
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: system pozycjonowania obiektów
GPS
geodezja satelitarna
troposfera
Global Positioning System
satellite geodesy
tropospheric delay
Opis:: This paper describes automatic system for GPS tropospheric delay estimation developed at the Institute of Geodesy and Geodetic Astronomy of the Warsaw University (WUT) LAC. The system is based on BPE (Bernese Processing Engine) and utilizes UltraRapid orbits and EUREF weekly coordinates. We describe processing strategies used in this application and report various experiences leading to start of NRT tropospheric service. We have made many statistical quality analysis of the resulting solutions. Accurate comparisons with ZTD combined product (EPN and IGS) and radiosounding data has been made. The poster presents also other research areas on the GPS data processing performed especially the Internet based service for an on-line GPS processing of the users data. Finally we present some other ideas of our interest how to use tropospheric delay in meteorology and climatology.
Źródło:: Reports on Geodesy; 2006, z. 1/76; 139-151
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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