北斗卫星导航系统实时定轨及SSR改正信息生成方法  

BDS Satellite Real-time Orbit Determination and SSR Correction Generation

作　　者：张龙平[1,2] 党亚民[1,2] 谷守周[2,3] 王虎 许长辉[2] 韩恒星[1,2] 

机构地区：[1]山东科技大学测绘科学与工程学院,山东青岛266590 [2]中国测绘科学研究院,北京100830 [3]武汉大学卫星导航定位技术研究中心,湖北武汉430079

出　　处：《测绘通报》2017年第12期1-5,共5页Bulletin of Surveying and Mapping

基　　金：国家重点研发计划(2016YFB0501801;2016YFB0502105;2016YFB0501405);测绘行业公益性专项(B1503);国家自然科学基金(41474011;41104018;41404034);全球连续监测评估系统项目(GFZX0301040308-06);国家基础测绘科技项目(2016KJ0205)

摘　　要：随着GNSS应用的不断发展,实时位置服务已经成为国内外研究热点,而北斗卫星导航系统的实时服务尚处于发展阶段。本文基于卫星精密定轨基本原理,讨论了北斗导航卫星实时轨道确定策略;研究了基于北斗卫星质心和天线相位中心的SSR轨道改正值生成方法,并给出了一种适合北斗导航卫星的IODE值表达方式;基于国家基准站和全球MGEX站数据,进行了北斗导航卫星的实时轨道解算测试,结果表明,GEO卫星1D RMS精度优于400 cm,平均精度为223 cm,其径向精度优于20 cm;IGSO卫星精度优于30 cm,平均精度为22 cm,其径向精度优于10 cm;MEO卫星精度优于30 cm,平均精度为15 cm,其径向精度优于10 cm。With the continuous development of GNSS applications, real-time location service has become a hot research at home and abroad,but the real-time service of BeiDou navigation satellite system is still at the stage of development. Firstly, based on the basic principle of satellites precision orbit determination,this paper discusses the real-time orbit determination strategy of BeiDou navigation satellite.Secondly,the method of generating SSR orbit correction based on satellite center of mass and antenna phase is studied, and a way to express the IODE value for BeiDou navigation satellite is proposed.Finally, the data from the national and MGEX stations are processed to determine BDS satellite real-time orbit. The results show that, 1D RMS accuracy of GEO satellite is better than 400 em, the average accuracy is 223 cm, the radial accuracy is better than 20 cm;IGSO satellite accuracy is better than 30 cm, the average accuracy is 22 cm, the radial accuracy is better than 10 cm; MEO satellite accuracy is better than 30 cm, the average accuracy is 15 cm, the radial accuracy is better than 10 cm.

关 键 词：实时定轨 SSR轨道改正 天线相位中心改正 IODE 

分 类 号：P228.4[天文地球—大地测量学与测量工程]