北斗三号卫星广播星历精度评估分析  

Accuracy assessment and analysis of broadcast ephemeris of BDS-3 satellites

作　　者：王海春 贾小林 李鼎[1] 毛悦 WANG Haichun;JIA Xiaolin;LI Ding;MAO Yue(College of Geological Engineering and Geomatics,Chang’an University,Xi’an 710054,China;State Key Laboratory of Geo-information Engineering,Xi’an 710054,China;Xi’an Research Institute of Surveying and Mapping,Xi’an 710054,China)

机构地区：[1]长安大学地质工程与测绘学院,西安710054 [2]地理信息工程国家重点实验室,西安710054 [3]西安测绘研究所,西安710054

出　　处：《导航定位学报》2019年第4期60-63,74,共5页Journal of Navigation and Positioning

基　　金：国家自然科学基金项目(41874041)

摘　　要：为了分析北斗三号卫星广播星历的精度,采用事后精密星历对北斗三号卫星的广播星历精度进行评估,对比北斗三号和北斗二号卫星广播星历精度,并利用卫星激光测距进行检核。结果表明:北斗三号卫星广播轨道精度相对北斗二号有较大提升;北斗三号卫星广播轨道径向误差优于0.1m,3维精度优于1m,广播钟差平均精度在1.5ns左右;北斗三号中圆轨道卫星空间信号测距误差优于0.5m,北斗二号同类卫星误差在1m左右。In order to analyze the broadcast ephemeris accuracy of BDS-3 satellites the paper used post-event precise ephemeris to evaluate the broadcast ephemeris accuracy of BDS-3satellites,and compared the accuracy of broadcast ephemeris between BDS-3satellites with BDS-2satellites,then tested the result by using satellite laser ranging.Results showed that:the broadcast orbit accuracy of BDS-3 satelliteswould be much higher than that of BDS-2 satellites;the radial error of broadcastorbit of BDS-3 satelliteswould beless than 0.1 m,three-dimensional accuracy would be better than 1 m,and the average accuracy of broadcast clock difference would be about 1.5 ns;the signal-in-space ranging error of BDS-3 MEO satelliteswould beless than 0.5 m,meanwhile,that of BDS-2MEO satelliteswould be about 1 m.

关 键 词：北斗三号 卫星激光测距 广播轨道精度 广播钟差精度 空间信号测距误差 

分 类 号：P228[天文地球—大地测量学与测量工程]