GNSS广播星历精度评定与对比  

Accuracy Evaluation and Comparison of GNSS Broadcast Ephemeris

作　　者：李方超 高井祥[1,2] 姚一飞 李增科[1,2] 李洪涛[1,2] LI Fangchao;GAO Jingxiang;YAO Yifei;LI Zengke;LI Hongtao(NASMG Key Laboratory of Land Environment and Disaster Monitoring,China University of Mining and Technology, 1 Daxue Road,Xuzhou 221116,China;Jiangsu Key Laboratory of Resources and Environmental Information Engineering, China University of Mining and Technology,1 Daxue Road,Xuzhou 221116,China;College of Water Resources and Architectural Engineering,Northwest A&F University,23 Weihui Road,Yangling 712100,China)

机构地区：[1]中国矿业大学国土环境与灾害监测国家测绘地理信息局重点实验室,江苏省徐州市大学路1号221116 [2]中国矿业大学江苏省资源环境信息工程重点实验室,江苏省徐州市大学路1号221116 [3]西北农林科技大学水利与建筑工程学院,陕西省杨凌区渭惠路23号712100

出　　处：《大地测量与地球动力学》2018年第9期943-947,共5页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41674008;41604006);江苏省普通高校研究生科研创新计划(SJCX17_0522)~~

摘　　要：以gbm精密星历和钟差作为参考真值,对GPS、BDS、Galileo以及GLONASS四大系统2017-02-01~02-28的广播星历、钟差以及卫星空间测距误差(SISRE)的精度进行对比分析。结果表明,GPS轨道径向、切向、法向的精度为1m、0.4m、0.8m左右,钟差约为2ns,卫星信号测距误差(SISRE)约0.4m;BDS不同类型卫星表现出很大差异;Galileo卫星的径向、切向、法向的精度为0.3m、0.3m、0.2m,钟差约3ns,SISRE约1m;GLONASS卫星的径向、切向、法向精度为0.4m、1.0m、0.4m,钟差约7ns,SISRE约2m。This paper evaluates the accuracy of GNSS navigation positioning system.The precise ephemeris and clock bias of gbm are a true reference to contrast and analyze the orbit and clock error,which is used to count spatial signal ranging error of GPS,BDS,Galileo and GLONASS navigation files from February 1 to February 28 of 2017.The experimental results show that the accuracy of GPS orbit to the neck,tangential,normal,clock difference and SISRE is 1 m,0.4 m,0.8 m,2 ns,0.4 m respectively.Different types of BDS tracks show larger differences;the Galileo is 0.3 m,0.3 m,0.2 m,3 ns and 1 m;the GLONASS is 0.4 m,1.0 m,0.4 m,7 ns and 2 m.

关 键 词：精密星历 广播星历 轨道精度 钟差 SISRE 

分 类 号：P228[天文地球—大地测量学与测量工程]