Search Results - Leo XIV~
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Real-time LEO satellite clock estimation with predicted LEO satellite orbits constrained
Published 2024“…When weakly constraining high-accuracy predicted orbits within a prediction time of 20 min, i.e., with a standard deviation of the constraint set to 2–3 dm in the radial and cross-track directions, and 4–6 dm in the along-track direction, the estimated clock accuracy can be improved from about 0.27 to 0.23 ns, with a 13.4% improvement. …”
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The potential of LEO mega-constellations in aiding GNSS to enable positioning in challenging environments
Published 2022“…Signals from the emerging Low Earth Orbit (LEO) satellites from mega-constellations that broadcast internet, such as Starlink (Space X), OneWeb, Iridium etc., also known as “signals of opportunity” (SOP), can potentially aid positioning. …”
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Real-time LEO satellite precise orbit and clock determination: Strategies and Challenges
Published 2025“…This study first introduces the procedure for ground-based cm-level real-time LEO satellite Precise Orbit Determination (POD), including near-real-time POD, short-term prediction, and ephemeris fitting/broadcasting. …”
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POD of small LEO satellites based on precise real-time MADOCA and SBAS-aided PPP corrections
Published 2021“…For real-time precise orbit determination (POD) of low earth orbit (LEO) satellites, high-accuracy global navigation satellite system (GNSS) orbit and clock products are necessary in real time. …”
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Array-Aided Precise Orbit and Attitude Determination of CubeSats using GNSS
Published 2024“…To address these challenges, we present an array-aided combined precise orbit and attitude determination model with an optimal solution. …”
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