星蚀期北斗卫星轨道性能分析——SLR检核结果

发布时间：2018-06-28 00:05

本文选题：北斗卫星导航系统 + 星蚀期　；参考：《测绘学报》2016年06期

【摘要】：星蚀期北斗卫星的轨道性能是北斗卫星导航系统性能分析的重要部分。了解北斗卫星导航系统星历中星蚀期轨道的精度,不仅可为系统服务性能评估提供支持,还有助于了解星蚀期精密定轨中相关模型可能存在的问题,进而为精密定轨函数模型改进提供参考。本文基于2014年1月至2015年7月的卫星激光测距资料,重点分析了星蚀期对北斗不同类型卫星轨道的影响,同时也对北斗广播星历和精密星历中整体轨道径向精度进行检核。结果表明:星蚀期内(尤其是偏航机动期间),IGSO/MEO卫星的广播星历和精密星历轨道均存在明显的精度下降;广播星历轨道径向误差达1.5~2.0m,精密星历轨道径向误差超过10.0cm。但仅从轨道径向残差序列中难以发现星蚀期对GEO卫星轨道是否有显著影响。非星蚀期间,IGSO/MEO卫星和GEO卫星的广播星历轨道径向精度分别优于0.5 m和0.9 m。IGSO/MEO卫星的精密星历轨道径向精度优于10.0cm,GEO卫星的轨道径向精度约50.0cm,且存在40.0cm左右的系统性偏差。
[Abstract]:The orbit performance of Beidou satellite during the eclipse is an important part of the performance analysis of Beidou satellite navigation system. Understanding the accuracy of orbit in the orbit of satellite eclipse in the Beidou satellite navigation system can not only support the evaluation of system service performance, but also contribute to the understanding of the possible problems existing in the relevant models in the precise orbit determination of the eclipse. Then it provides a reference for the improvement of precise orbit determination function model. Based on the satellite laser ranging data from January 2014 to July 2015, the influence of the eclipse period on the different satellite orbits in Beidou is analyzed, and the radial accuracy of the whole orbit in the Beidou broadcast ephemeris and the precise ephemeris is also checked. The results show that the accuracy of broadcast ephemeris and precise ephemeris of IGSO / MEO satellite decreases obviously during the eclipse period (especially during yaw maneuver), the radial error of broadcast ephemeris reaches 1.5 ~ 2.0 m, and the radial error of precise ephemeris orbit exceeds 10.0 cm. However, it is difficult to find that the eclipse period has significant influence on GEO satellite orbit only from the orbit radial residuals. The radial accuracy of broadcast ephemeris of IGSO / MEO satellite and GEO satellite is better than that of 0.5 m and 0.9 m.IGSO / MEO satellites respectively during the non-eclipse period. The radial accuracy of the precise ephemeris orbit is better than that of 10.0 cm / g GEO satellite about 50. 0 cm, and there is a systematic deviation of 40.0cm.
【作者单位】：信息工程大学地理空间信息学院;西安测绘研究所地理空间工程国家重点实验室;北京卫星导航中心;
【基金】：国家自然科学基金(41020144004A;41374019;41474015) 国家863计划(2013AA122501)~~
【分类号】：TN967.1

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