空间电子技术2025，Vol.22Issue(2)：68-74,7.DOI:10.3969/j.issn.1674-7135.2025.02.008
基于PPP电文的Sentinel-3A卫星自主实时精密定轨
Autonomous real-time precision orbit determination of Sentinel-3A satellite based on PPP messages
摘要
Abstract
In the field of low Earth orbit(LEO)satellite navigation augmentation and radio occultation,users require high-precision and low-latency LEO satellite orbit information.The conventional approach is that low-orbit satellites transmit observation data and augmentation information to ground processing centers for the generation of precise satellite orbits.The latency in this approach depends on the satellite-to-ground link and augmentation information delay.To provide high-precision and low-latency orbit information,the feasibility of LEO satellite autonomous precise orbit determination based on Precise Point Positioning(PPP)messages is validated,and LEO satellite autonomous precise orbit determination based on PPP messages is proposed,using the Sentinel-3A satellite as the research subject.The results indicate that the three-dimensional accuracy of real-time orbit determination using single-system and multi-system autonomous PPP messages is 5.32 cm and 2.23 cm,respectively.The technique of multi-system autonomous real-time orbit determination based on PPP messages eliminates the waiting time for external information and achieves centimeter-level orbit accuracy,providing a feasible solution for future autonomous information processing in LEO navigation systems.关键词
低轨卫星/精密定轨/精密单点定位/Sentinel-3A卫星Key words
LEO satellites/precision orbit determination/precise point positioning/Sentinel-3A satellite引用本文复制引用
王韦玮,卢樟健,姚渊博,田野,边朗,张立新..基于PPP电文的Sentinel-3A卫星自主实时精密定轨[J].空间电子技术,2025,22(2):68-74,7.基金项目
国家自然科学基金面上项目(编号:12373079) （编号:12373079）
