北斗卫星超短弧运动学定轨方法优化与试验分析

发布时间：2018-05-28 13:08

本文选题：北斗卫星导航系统 + 精密定轨　；参考：《测绘学报》2017年04期

【摘要】：针对北斗卫星姿轨控后的轨道快速确定难题,系统地研究了基于多项式拟合和基于星历拟合两种运动学定轨方法,推导建立了相应的运动学定轨模型。同时针对接收机系统差和顽固多径问题,利用基于并置比对的接收机系统差解算方法和CNMC的多径削弱方法,实现了超短弧跟踪条件下接收机数据质量的有效控制。利用北斗GEO/IGSO/MEO卫星的实测伪距数据进行了试验验证,结果表明在10min超短弧跟踪条件下,GEO、IGSO和MEO卫星的运动学定轨位置精度分别为3.27m、8.19m和5.90m,实现了超短弧跟踪条件下的北斗卫星快速定轨,满足了卫星机动期间的北斗RDSS服务对轨道精度的需求,为北斗RDSS服务走向全球提供了技术支撑。
[Abstract]:Aiming at the problem of fast orbit determination after beidou satellite attitude and orbit control, two kinematic orbit determination methods based on polynomial fitting and ephemeris fitting are studied systematically, and the corresponding kinematic orbit determination model is derived. At the same time, aiming at the problem of receiver system difference and persistent multipath, the method of receiver system difference calculation based on parallel alignment and the method of CNMC multipath weakening are used to realize the effective control of receiver data quality under the condition of ultrashort arc tracking. The pseudo-range data of Beidou GEO/IGSO/MEO satellite are used to test and verify, The results show that under the condition of 10min ultra-short arc tracking, the kinematic orbit determination accuracy is 3.27 m ~ 8.19 m and 5.90 m, respectively. The fast orbit determination of Beidou satellite is realized under the condition of ultra-short arc tracking. It can meet the orbit accuracy requirement of Beidou RDSS service during satellite maneuver, and provide technical support for Beidou RDSS service to go global.
【作者单位】：北京卫星导航中心;大地测量与地球动力学国家重点实验室;
【基金】：国家自然科学基金(41204022;41374038) 大地测量与地球动力学国家重点实验室开放研究基金(SKLGED2017-3-3-E)~~
【分类号】：P228.4

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