| 北斗卫星导航系统实时定轨及SSR改正信息生成方法 |
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| 引用本文： | 张龙平,党亚民,谷守周,王虎,许长辉,韩恒星.北斗卫星导航系统实时定轨及SSR改正信息生成方法[J].测绘通报,2017(12):1-5. |
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| 作者姓名： | 张龙平 党亚民 谷守周 王虎 许长辉 韩恒星 |
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| 作者单位： | 1. 山东科技大学测绘科学与工程学院,山东青岛266590;中国测绘科学研究院,北京100830;2. 中国测绘科学研究院,北京100830;武汉大学卫星导航定位技术研究中心,湖北武汉430079;3. 中国测绘科学研究院,北京,100830 |
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| 基金项目： | 国家重点研发计划，测绘行业公益性专项，国家自然科学基金，全球连续监测评估系统项目，国家基础测绘科技项目 |
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| 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。
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| 关 键 词： | 实时定轨 SSR轨道改正 天线相位中心改正 IODE |
BDS Satellite Real-time Orbit Determination and SSR Correction Generation |
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| Abstract: | 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 cm,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. |
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| Keywords: | real-time orbit determination SSR orbit correction antenna phase center correction IODE |
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