赵立都,张双成,范丽红

• 1:重庆交通大学土木工程学院
• 2:长安大学地质工程与测绘学院

摘要(Abstract)：

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。

关键词(KeyWords)： BDS;广播星历;轨道误差;卫星钟差;URE

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41104019,41274005,41202189)

作者(Author): 赵立都,张双成,范丽红

DOI: 10.16251/j.cnki.1009-2307.2017.09.028

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