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ASSESSING EFFICIENCY OF GPS EPHEMERIDES IN DIFFERENT REGION USING PRECISE POINT POSITIONING [PDF]
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, 2023 Precise Point Positioning (PPP) is a technique that process Global Positioning System (GPS) observation that can achieve sub-decimetre accuracy. Precise ephemerides that contain satellite clock and position plays a vital role in minimising orbital and ...
T A Musa
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Precise point positioning with GPS and Galileo broadcast ephemerides [PDF]
GPS Solutions, 2021 AbstractFor more than 20 years, precise point positioning (PPP) has been a well-established technique for carrier phase-based navigation. Traditionally, it relies on precise orbit and clock products to achieve accuracies in the order of centimeters. With the modernization of legacy GNSS constellations and the introduction of new systems such as Galileo,
André Hauschild +2 more
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Precise real‐time navigation of LEO satellites using GNSS broadcast ephemerides [PDF]
Navigation, Journal of the Institute of Navigation, 2021 The availability of orbit information with high precision and low latency is a key requirement for many Earth-observation missions, predominantly in the field of radio occultation. Traditionally, precise orbit determination solutions of low-Earth orbit (LEO) satellites are obtained offline on ground after downloading GNSS measurements and auxiliary ...
André Hauschild, Oliver Montenbruck
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AGG+, 2021 This paper analyses how broadcast and precise ephemerides in alignment, using the least-squares method, affect the accuracy of coordinates of the newly included permanent stations.
Tanja Đukanović +2 more
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TerraSAR-X precise orbit determination with real-time GPS ephemerides [PDF]
Advances in Space Research, 2012 Abstract For active and future Earth observation missions, the availability of near real-time precise orbit information is becoming more and more important. The latency and quality of precise orbit determination results is mainly driven by the availability of precise GPS ephemerides and clocks. In order to have high-quality GPS ephemerides and clocks
André Hauschild, Oliver Montenbruck
exaly +3 more sources
Precise real-time navigation of LEO satellites using a single-frequency GPS receiver and ultra-rapid ephemerides [PDF]
Aerospace Science and Technology, 2017 25 pages, 6 figures, Ready for publication in Aerospace Science and Technology ...
Pei Chen, Xiucong Sun
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Fusion of GNSS Pseudoranges with UWB Ranges Based on Clustering and Weighted Least Squares [PDF]
Sensors, 2023 Global navigation satellite systems (GNSSs) and ultra-wideband (UWB) ranging are two central research topics in the field of positioning and navigation.
Günther Retscher +2 more
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GNSS Real-Time ZTD/PWV Retrieval Based on PPP with Broadcast Ephemerides
AtmosphereGNSS precise point positioning (PPP) plays an important role in retrieving atmospheric water vapor values and performing numerical weather prediction. However, traditional PPP relies on real-time orbits and clocks, which require continuous internet or ...
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Continuous precise ephemerides for Beidou-2 maneuvered satellites based on a new thrust force model
Advances in Space Research, 2019 Abstract Beidou geostationary earth orbit (GEO) and inclined geosynchronous orbit (IGSO) satellites are frequently maneuvered to keep them in the designed orbits by thrust forces. As the thrust forces are generally unknown, precise satellite orbits are difficult to be determined during maneuver periods.
Wu Chen, Jing Qiao
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Effect of using different satellite ephemerides on GPS PPP and post processing techniques
Geodesy and Cartography, 2021 The orbital error is one of the errors in GPS which affect the accuracy of GPS positioning. In this research GPS broadcast, ultra-rapid, rapid and precise satellite ephemerides are used for processing different baseline lengths among some CORS stations ...
Khaled Mahmoud Abdel Aziz +1 more
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