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.
作者
王海春
贾小林
李鼎
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)
出处
《导航定位学报》
CSCD
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)
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
BeiDou navigation satellite system with global coverage(BDS-3)
satellite laser ranging
broadcast orbit accuracy
broadcast clock accuracy
signal-in-space ranging error
