Precise orbit determination of BeiDou constellation based on BETS and MGEX network.
Precise orbit determination of BeiDou constellation based on BETS and MGEX network.
复制标题
基于BETS和MGEX网络的北斗星座精密定轨
DOI：
10.1038/srep04692
复制
发表时间：
2014-04-15
影响因子：
4.6
通讯作者：
Zheng F
中科院分区：
文献类型：
--
作者：
Lou Y;Liu Y;Shi C;Yao X;Zheng F
中国北斗导航卫星系统作为一个区域星座正式运行，包括五颗地球静止轨道（GEO）卫星、五颗倾斜地球同步轨道（IGSO）卫星和四颗中地球轨道（MEO）卫星。对2013年1月1日至3月31日期间来自北斗实验跟踪站和IGS多重全球导航卫星系统实验网络的观测数据进行了处理，以确定北斗星座的轨道。不同的弧长和太阳辐射压力参数进行了研究。对于北斗IGSO和MEO，缩减的ECOM五参数模式比完整的ECOM九参数模式有更好的性能。在RMS中，IGSO和MEO的3天弧解的中间日轨道重叠分别优于20 cm和14 cm。 IGSO和MEO的卫星激光测距残差均优于10厘米。对于北斗地球同步轨道，可以实现几米的轨道重叠和几分米的卫星激光测距残差。
Chinese BeiDou Navigation Satellite System is officially operational as a regional constellation with five Geostationary Earth Orbit (GEO) satellites, five Inclined Geosynchronous Satellite Orbit (IGSO) satellites and four Medium Earth Orbit (MEO) satellites. Observations from the BeiDou Experimental Tracking Stations (BETS) and the IGS Multi-GNSS Experiment (MGEX) network from 1 January to 31 March 2013 are processed for orbit determination of the BeiDou constellation. Various arc lengths and solar radiation pressure parameters are investigated. The reduced set of ECOM five-parameter model produces better performance than the full set of ECOM nine-parameter model for BeiDou IGSO and MEO. The orbit overlap for the middle days of 3-day arc solutions is better than 20 cm and 14 cm for IGSO and MEO in RMS, respectively. Satellite laser ranging residuals are better than 10 cm for both IGSO and MEO. For BeiDou GEO, the orbit overlap of several meters and satellite laser ranging residuals of several decimetres can be achieved.