GNSS空间信号精度的研究分析  

Analysis of GNSS spatial-signal accuracy

作　　者：陶清瑞 贾小林[2] 王利军[1] 郝茂森 TAO Qingrui;JIA Xiaolin;WANG Lijun;HAO Maosen(Chang’an University,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,陕西西安710054 [2]西安测绘研究所,陕西西安710054

出　　处：《测绘工程》2021年第1期24-29,共6页Engineering of Surveying and Mapping

基　　金：国家自然科学基金资助项目(41874041)。

摘　　要：基于MGEX提供的产品,对当前全球卫星导航定位系统的空间信号精度分析与评估。结果表明:目前各系统的全球平均SISRE分别为GPS 0.6 m,Galileo 0.28 m,GLONASS 2.5 m,BDS-30.49 m,BDS-21.41 m;其中,Galileo最优,BDS-3次之,GPS稍低于BDS-3,另外,BDS-3 SISRE精度相对于BDS-2提升65%。Based on the products provided by MGEX,this paper carries out the evaluation of the spatial signal accuracy of four current global navigation and positioning systems.The result shows that:at present,the global average SISRE of each system is 0.6 m for GPS,0.28 m for Galileo,2.5 m for GLONASS,0.49 m for BDS-3,and 1.41 m forBDS-2,respectively.It can be seen that Galileo is the best,BDS-3 is the second best,and GPS is slightly lower than BDS-3.In addition,the accuracy of BDS-3 SISRE is 65%higher than that of BDS-2,which also provides a reference for subsequent construction.

关 键 词：轨道 钟差 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]