摘要
针对卫星导航定位系统空间信号精度能否满足用户需求的问题,该文基于IGS MGEX发布的2016年连续100d的实测数据以及GBM分析中心的精密卫星轨道及钟差产品对北斗卫星广播星历误差、轨道精度以及空间信号距离误差进行统计分析。结果表明:北斗系统的IGSO和MEO卫星广播星历的均方根优于3m,GEO卫星广播星历误差RMSE优于5m;IGSO和MEO卫星广播星历轨道精度优于GEO卫星,且轨道误差在径向R精度最好;空间信号距离误差中,GEO卫星的SISRE均值优于1.5m,IGSO卫星的SISRE均值优于1.0m,MEO卫星的SISRE均值优于0.5m。由此反映出北斗空间信号稳定且精度逐渐提升。
According to the fact that there is whether the accuracy and stability of signal in space is capable to meet user requirements,errors of broadcast ephemeris and orbital accuracy and SISRE were analyzed based on successive 100 days measured data and precise satellite orbit and clock products of GBM in 2016.The experimental results showed the RMSE of broadcast ephemeris error of IGSO and MEO satellites were better than 3.0 m,that were better than 5.0 mfor GEO satellites;orbital accuracy of broadcast ephemeris for MEO and IGSO satellites was superior to that of GEO,and the orbit error in the radial Ris best;the average SISRE of GEO satellites was better than 1.5 m,while for IGSO and MEO were better than 1 mand 0.5 m,respectively.This reflected that Signal in space of BDS satellites presented a good stability and increasing accuracy.
作者
马下平
鲁尚强
李秦政
陈鹏
MA Xiaping;LU Shangqiang;LI Qinzheng;CHEN Peng(Key Laboratory for DigitaI Land and Resources of Jiangxi Province,East China University of Technology,Nanchang 330013, China;Schooi of Geomatics,Xi'an University of Science and Technology,Xi'an 710054,China;Xi'an Hua Di Surveying and Mapping Technology Company Limited,Xi'an 710010,China)
出处
《测绘科学》
CSCD
北大核心
2019年第1期90-97,共8页
Science of Surveying and Mapping
基金
东华理工大学江西省数字国土重点实验室项目(DLLJ201803)
现代工程测量国家测绘地理信息局重点实验室项目(TJES1810)
北斗开放实验室西安分实验室项目(201703)
