Results 111 to 120 of about 2,623 (148)
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Measurement, 2022
Abstract The real-time high-accuracy orbit and clock of the GNSS (Global Navigation Satellite System) are one of the most essential corrections for the real-time kinematic precise orbit determination (POD) mode and reduced-dynamic POD mode for Low Earth Orbit (LEO) satellites.
Wang, Zhiyu +9 more
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Abstract The real-time high-accuracy orbit and clock of the GNSS (Global Navigation Satellite System) are one of the most essential corrections for the real-time kinematic precise orbit determination (POD) mode and reduced-dynamic POD mode for Low Earth Orbit (LEO) satellites.
Wang, Zhiyu +9 more
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Real-time precise orbit determination for BDS satellites using the square root information filter
GPS Solutions, 2019Though widely used to generate the global navigation satellite system (GNSS) ultra-rapid orbit products for real-time applications, the batch least-squares (LSQ) adjustment and precise orbit determination (POD) prediction is limited for satellites undergoing maneuvers.
Xiaolei Dai +5 more
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Precise Real-Time Relative Orbit Determination for Large-Baseline Formations Using GNSS
The International Technical Meeting of the The Institute of Navigation, 2021This paper presents a real-time GNSS-based navigation architecture for distributed space systems, which performs precise relative orbit determination at separations of hundreds of kilometers. Through differential carrier-phase GNSS and on-board integer ambiguity resolution, a hybrid Kalman filter combines the extended Kalman filter time update with the
Vincent Giralo, Simone D’Amico
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Real-Time, Autonomous, Precise Orbit Determination Using GPS
Navigation, 2001ABSTRACT: The desire for autonomously generated, rapidly available, and highly accurate satellite ephemeris is growing with the proliferation of constellations of satellites and the cost and overhead of ground tracking resources. Autonomous orbit determination (OD) based on observations from spaceborne GPS receivers is done on the ground in a ...
David B. Goldstein +2 more
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P2OD: Real-time Precise Onboard Orbit Determination for LEO Satellites
ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation, 2017Satellite orbit determination is a fundamental information for many space missions, several requiring a high level of orbit accuracy. Nowadays the Precise Orbit Determination (POD) is the technique routinely used on ground for computing the orbit of LEO missions, especially when the position of the satellite center of mass has to be known at cm level ...
Pietro Giordano +3 more
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PPP augmentation and real-time precise orbit determination for LEO satellites
2017 36th Chinese Control Conference (CCC), 2017It is valuable for ground users to realize centimeter-level positioning based on PPP. However, the initialization of PPP algorithm costs a long time, which limits its application. In order to achieve the near-real-time PPP positioning for users, an augmentation scheme by utilizing LEO satellite is proposed so as to improve the initialization speed of ...
Yi Zhao, Feng Yu, Na Xu
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Precise Onboard Orbit Determination for LEO Satellites with Real-Time Orbit and Clock Corrections
ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation, 2016Precise Point Positing (PPP) with real-time orbit and clock correction streams has become an established technique over the last decade for land, air and sea applications. The use of real-time corrections for precise positioning has not extended into orbit yet, although a number of low-Earth orbit (LEO) satellite missions have a demand for precise ...
Hauschild, Andre +4 more
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Filter-based Real-time GNSS Precise Orbit Determination Applied to Satellites in Maneuver
2023The accuracy and availability of real-time precise orbits are critical for real-time Global Navigation Satellite Systems (GNSS) users. Real-time orbits are estimated by either batch processing using least-squares adjustment at most International GNSS Service (IGS) Analysis Centers (ACs), or filter-processing, for example, at JPL and Wuhan University ...
Zhiwei Qin +7 more
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Multi-GNSS real-time precise orbit determination
Providing real-time precise positioning services with Global Navigation Satellite Systems (GNSSs) has a profound impact on various fields such as autonomous driving, natural hazard monitoring and early warning, and surface loading. Stable, reliable, and high-precision real-time satellite orbits and clocks are the prerequisites for real-time Precise ...openaire +2 more sources
GPS Solutions, 2019
The real-time precise orbit is an essential prerequisite for a real-time precise point positioning service. Focusing on the impact of ambiguity resolution on real-time orbital precision, we propose an efficient approach for real-time ambiguity resolution, which consists of two modules.
Zongnan Li +7 more
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The real-time precise orbit is an essential prerequisite for a real-time precise point positioning service. Focusing on the impact of ambiguity resolution on real-time orbital precision, we propose an efficient approach for real-time ambiguity resolution, which consists of two modules.
Zongnan Li +7 more
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