Results 31 to 40 of about 2,623 (148)
Remote Sensing, 2019 Abnormal information of satellite orbits inevitably appears in the broadcast ephemeris. Failure to obtain unhealthy information on GPS satellite orbits in precise orbit determination (POD) degrades GPS service performance.
Fei Ye +4 more
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Space Weather, 2023 Precise orbit knowledge is a fundamental requirement for low Earth orbit (LEO) satellites. High‐precision non‐gravitational force modeling directly improves the overall quality of LEO precise orbit determination (POD). To address the potential systematic
Youcun Wang +7 more
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An improved approach for rapid filter convergence of GNSS satellite real-time orbit determination
Frontiers in Physics, 2023 Introduction: The real-time precise satellite orbit of Global Navigation Satellite System (GNSS) usually takes a long time to converge to a stable state using the filter method.
Liqin Zhou +8 more
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Real-Time Determination of Relative Position Between Satellites Using Laser Ranging [PDF]
Journal of Astronomy and Space Sciences, 2012 We made a study on real-time determination method for relative position using the laser-measured distance data between satellites. We numerically performed the determination of relative position in accordance with extended Kalman filter algorithm using ...
Shinwon Jung +5 more
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LEO Satellite Clock Modeling and Its Benefits for LEO Kinematic POD
Remote Sensing, 2023 High-accuracy Low Earth Orbit (LEO) satellite clock and orbital products are preconditions to realize LEO augmentation for high-accuracy GNSS-based positioning on the ground.
Kan Wang, Ahmed El-Mowafy, Xuhai Yang
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InSAR Baseline Estimation for Gaofen-3 Real-Time DEM Generation
Sensors, 2018 For Interferometry Synthetic Aperture Radar (InSAR), the normal baseline is one of the main factors that affects the accuracy of the ground elevation. For Gaofen-3 (GF-3) InSAR processing, the poor accuracy of the real-time orbit determination results in
Huan Lu +5 more
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Remote Sensing, 2021 The Haiyang 2B (HY-2B) satellite requires precise orbit determination (POD) products for geodetic remote sensing techniques. An improved set of reduced-dynamic (RD) orbit solutions was generated from the onboard Global Positioning System (GPS ...
Youcun Wang +7 more
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Exploring the Contribution of PNT LEO Satellites to Precise Positioning Applications
Engineering Proceedings, 2023 Positioning services based on GNSS (Global Navigation Satellite Systems) have been using MEO satellites designed to guarantee Earth global coverage for decades.
Jorge Durán +5 more
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Real‐time precise orbit determination for FY‐3C and FY‐3D based on BDS and GPS onboard observation
IET Radar, Sonar & Navigation, 2023 Abstract The code multipath error associated with elevation in BDS‐2 is one of the main factors whose impact on the precision of real‐time reduced‐dynamic precise orbit determination (POD) using spaceborne multi‐global navigation satellite systems (GNSS) observation data for FengYun‐3C (FY‐3C) and FengYun‐3D (FY‐3D) satellites.
Zhiyu Wang +6 more
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Remote SensingSpace-based opportunistic positioning is a crucial component of resilient positioning, navigation, and timing (PNT) systems, and it requires the acquisition of orbit information for non-cooperative low Earth orbit (LEO) satellites.
Ruofan Deng, Honglei Qin, Yu Zhang
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