Results 1 to 10 of about 143,499 (172)
Accurate and Rapid Broadcast Ephemerides for Beidou-Maneuvered Satellites [PDF]
Remote Sensing, 2019 The geostationary earth orbit (GEO) and inclined geosynchronous orbit (IGSO) satellites of the Beidou navigation satellite system are maneuvered frequently. The broadcast ephemeris can be interrupted for several hours after the maneuver.
Shengyue Ji, Wu Chen, Duojie Weng
exaly +7 more sources
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 ...
Zongqiu Xu +5 more
doaj +7 more sources
IEEE Access, 2023 BDS-3 was formally put into service on July 31, 2020, and now along with BDS-2 provides the positioning, navigation and timing services. In this contribution, different techniques of dual-frequency absolute positioning using the fully serviceable BDS-2 ...
Shengnan Liu, Shaolin Zhu, Jian Zhang
doaj +4 more sources
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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Satellite Navigation, 2023 Previous studies have not evaluated the systematic errors implied in the third generation of BeiDou-3 Navigation Satellite System (BDS-3) broadcast ephemeris.
Qile Zhao
exaly +2 more sources
Multi-GNSS Combined Orbit and Clock Solutions at iGMAS [PDF]
Sensors, 2022 Global navigation services from the quad-constellation of GPS, GLONASS, BDS, and Galileo are now available. The international GNSS monitoring and assessment system (iGMAS) aims to evaluate the navigation performance of the current quad systems under a ...
Wei Zhou +5 more
doaj +2 more sources
Space State Representation Product Evaluation in Satellite Position and Receiver Position Domain [PDF]
Sensors, 2020 In Global Navigation Satellite Systems (GNSS) positioning, important terms in error budget are satellite orbits and satellite clocks correction errors. International services are developing and providing models and correction to minimize the influence of
Renata Pelc-Mieczkowska +1 more
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Design of the broadcast ephemerides for the Lunar Communication and Navigation Services system
Progress in Earth and Planetary ScienceThe last few years have brought extensive growth of interest in the Earth’s natural satellite—the Moon. The lunar surface, especially the surroundings of its south pole, is supposed to become a getaway for space exploration including Mars in the first ...
Grzegorz Bury +2 more
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Study on Optimal Broadcast Ephemeris Parameters for GEO/IGSO Navigation Satellites [PDF]
Sensors, 2020 Chandeok Park, Deok Won Lim, Gimin Kim
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ASSESSING EFFICIENCY OF GPS EPHEMERIDES IN DIFFERENT REGION USING PRECISE POINT POSITIONING [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 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 ...
H. S. Lee +3 more
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