北斗卫星导航系统广播星历精度分析
发布时间：2018-10-18 10:38
【摘要】：针对系统地评估我国北斗卫星导航系统广播星历精度与保障实时导航定位服务的需求,对BDS广播星历提供的卫星轨道、钟差以及用户测距误差(URE)的精度性能进行分析,统计了2015年连续4周全部BDS在轨健康卫星的广播星历各项精度指标值。分析结果表明:BDS的MEO和IGSO卫星轨道精度优于GEO卫星结果,且径向精度优于法向和切向精度;BDS搭载的国产星载铷钟卫星钟差序列相对比较稳定,其均方根误差优于4ns;GEO/IGSO卫星的用户距离误差(URE)在6m以内,MEO的URE优于20m。研究结果对北斗系统的建设、后期的发展和用户市场的拓展,都具有重要的参考价值。
[Abstract]:In order to evaluate the accuracy of broadcast ephemeris of Beidou satellite navigation system in China systematically and to guarantee the real-time navigation and positioning service, the accuracy performance of satellite orbit, clock error and user ranging error (URE) provided by BDS broadcast ephemeris are analyzed. The broadcast ephemeris of all BDS healthy satellites in orbit for 4 consecutive weeks in 2015 are calculated. The results show that the orbit accuracy of MEO and IGSO satellites in BDS is better than that of GEO satellites, and the radial accuracy is better than that of normal and tangential direction, and the satellite clock difference sequence of domestic satellite carried on BDS is relatively stable. The root-mean-square error (RMS) is better than that of 4nsgo / IGSO satellite, the user distance error (URE) is less than 6m, and the URE of MEO is better than 20m. The results have important reference value for the construction of Beidou system, the later development and the expansion of user market.
【作者单位】： 重庆交通大学土木工程学院;长安大学地质工程与测绘学院;
【基金】：国家自然科学基金项目(41104019,41274005,41202189)
【分类号】：TN967.1
本文编号：2278871
[Abstract]:In order to evaluate the accuracy of broadcast ephemeris of Beidou satellite navigation system in China systematically and to guarantee the real-time navigation and positioning service, the accuracy performance of satellite orbit, clock error and user ranging error (URE) provided by BDS broadcast ephemeris are analyzed. The broadcast ephemeris of all BDS healthy satellites in orbit for 4 consecutive weeks in 2015 are calculated. The results show that the orbit accuracy of MEO and IGSO satellites in BDS is better than that of GEO satellites, and the radial accuracy is better than that of normal and tangential direction, and the satellite clock difference sequence of domestic satellite carried on BDS is relatively stable. The root-mean-square error (RMS) is better than that of 4nsgo / IGSO satellite, the user distance error (URE) is less than 6m, and the URE of MEO is better than 20m. The results have important reference value for the construction of Beidou system, the later development and the expansion of user market.
【作者单位】： 重庆交通大学土木工程学院;长安大学地质工程与测绘学院;
【基金】：国家自然科学基金项目(41104019,41274005,41202189)
【分类号】：TN967.1
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1 刘星东;同步卫星广播星历设计与实现[D];中国科学院研究生院（国家授时中心）;2014年
，本文编号：2278871
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