北斗三号全球卫星导航系统的广播星历精度评估  

Accuracy assessment of BDS-3 broadcast ephemeris

作　　者：王朝辉 马下平[1,2] 严丽 鲁铁定 赵庆志[1] WANG Zhaohui;MA Xiaping;YAN Li;LU Tieding;ZHAO Qingzhi(School of Geomatics,Xi'an University of Science and Technology,Xi'an 710054,China;Shanghai Key Laboratory of Space Navigation and Positioning Techniques,Shanghai 200030,China;Faculty of Geomatics,East China University of Technology,Nanchang 330013,China)

机构地区：[1]西安科技大学测绘科学与技术学院,陕西西安710054 [2]上海市空间导航与定位技术重点实验室,上海200030 [3]东华理工大学测绘工程学院,江西南昌330013

出　　处：《测绘通报》2021年第1期59-65,98,共8页Bulletin of Surveying and Mapping

基　　金：国家自然科学基金(41904171,42061077);江西省自然科学基金(20202BAB214029);江西省教育厅科学技术研究项目(GJJ18042121)。

摘　　要：为了及时评估北斗三号全球卫星导航系统(BDS-3)广播星历的精度,本文基于2018年3月10—22日和2019年7月2—14日的BDS-2、BDS-3广播星历,以及武汉大学发布的精密星历数据,从北斗卫星的星历误差、轨道误差和空间信号测距精度(SISRE)3个方面进行了全面比较与分析。结果表明:BDS-3的广播星历星历误差的RMSE基本优于1.5 m,BDS-2的GEO、IGSO和MEO卫星的广播卫星星历误差的RMSE分别为3.0、3.0、2.0 m;BDS-3的轨道误差RMSE基本优于1.0 m,其中径向R方向的精度高于切向T和法线N方向,分别为0.1、1.0、0.5 m,BDS-2在R、T、N 3个方向上的精度分别为1、3、3 m;BDS-3广播星历SISRE的RMSE基本优于0.25 m,BDS-2的GEO、IGSO和MEO卫星的SISRE分别优于0.5、2.0、0.5 m。本文的结果整体上反映出BDS-3信号稳定且精度逐渐提升。In order to evaluate the accuracy of Bei Dou-3 global navigation satellite system( BDS-3),broadcast ephemeris timely,this paper makes a comprehensive comparison and analysis of ephemeris error,orbital error and SISRE,signal in space range error. The data of broadcast ephemeris and precise ephemeris is released by Wuhan University of BDS-2 and BDS-3 from March 10 to March 22,2018 and July 2 to July 14,2019. The results show that the RMSE of the broadcast ephemeris of BDS-3 are basically better than 1.5 m,and the RMSE of BDS-2 GEO,IGSO and MEO satellites are less than respectively 3. 0,3. 0,2. 0 m. The orbit errors of BDS-3 are basically better than 1.0 m,and the errors in the R direction are superior than the T and N directions,respectively 0.1,1.0,0.5 m.The orbit errors of the BDS-2 in the three directions of the radial R,T and N are 1,3,3 m. The SISRE of BDS-3 are better than 0.25 m,and SISRE of BDS-2 GEO,IGSO and MEO satellites are better than 0.5,2.0,0.5 m respectively. The results of this paper reflect that the BDS-3 signal is stable and its accuracy is improved.

关 键 词：BDS-3 广播星历 空间信号测距误差 轨道精度 评估 

分 类 号：P228[天文地球—大地测量学与测量工程]