摘要: |
通过对比北斗卫星导航系统(BeiDou Navigation Satellite System,BDS)广播星历与事后精密星历,提取了轨道和卫星时钟误差。基于北斗轨道误差及北斗卫星时钟误差统计特征分析,构建区别于全球定位系统(Global Positioning System,GPS)的BDS空间信号用户测距误差(Signal-In-Space User Range Error,SISRE)描述方法,对BDS广播星历中用户测距精度(User Range Accuracy,URA)进行了验证。6个月的北斗数据测试结果表明,北斗GEO、IGSO和MEO卫星的URA分别为3.0m、1.9m和1.6m。 |
关键词: SISE 轨道误差 卫星时钟误差 URA 北斗卫星导航系统 |
DOI: |
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基金项目:国家自然科学基金重点项目(61633008);国家自然科学基金面上项目(61773132,61803115);工信部《第七代超深水钻井平台(船)》创新专项;黑龙江省杰青项目(JC2018019);中央高校基金基本科研业务费项目(HEUCFP201768) |
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Study on Error Statistical Characterization and Description Method of BDS Signal-in-Space |
FENG Shuai,LI Liang,CHENG Chun,LIU Yuan-yuan |
(School of Automation, Harbin Engineering University,Harbin 150001, China) |
Abstract: |
Satellite orbit error and satellite clock errors were extracted by comparing the BeiDou navigation satellite system (BDS) broadcast ephemeris with the post-event precise ephemeris. Based on the statistical characterization of BDS orbit and clock error, a signal-in-space user range error (SISRE) description method different from GPS for BDS space signals is constructed to verify the user range accuracy (URA) in BDS broadcast ephemeris. The 6-month BeiDou data test results show that the URA of BeiDou GEO, IGSO and MEO satellites are 3.0m, 1.9m and 1.6m respectively. |
Key words: SISE Orbit error Satellite clock error URA BDS |