引入国家基准站的北斗导航卫星精密定轨

发布时间：2019-06-19 12:41

【摘要】：卫星精密轨道的确定是北斗卫星导航系统位置与服务的核心技术之一,而国家基准站是影响卫星轨道精度的一个重要因素。本文基于中国测绘科学研究院国际GNSS监测与评估中心自主开发的软件计算国家基准站和MGEX站对北斗卫星精密定轨的影响。得出结果:加上国家基准站后GEO卫星轨道精度平均能达到2.0 m,比没有国家基准站时提高约14%,在GEO切向方向改善最为明显,大约提高30%。IGSO和MEO卫星也有所提高。加上国家基准站后,三类卫星的轨道重复弧段的径向精度优于5 cm。有了国家基准站数据BDS精密轨道会有明显的改善。国家基准站的建立使我国北斗导航卫星的服务能力有很大提高。
[Abstract]:The determination of satellite precision orbit is one of the core technologies of Beidou satellite navigation system position and service, and the national reference station is an important factor affecting the accuracy of satellite orbit. Based on the software developed by the International GNSS Monitoring and Evaluation Center of the China Academy of surveying and Mapping Sciences, this paper calculates the influence of the national reference station and MGEX station on the precise orbit determination of Beidou satellite. The results show that the orbital accuracy of GEO satellite after the national reference station can reach 2.0m on average, which is about 14% higher than that without the national reference station. The improvement in the tangential direction of GEO is the most obvious, and the increase of 30%.IGSO and MEO satellites is also improved. With the addition of the national reference station, the radial accuracy of the repeated arc section of the orbit of the three types of satellites is better than 5 cm.. With the national reference station data BDS precision orbit will be significantly improved. With the establishment of national reference station, the service ability of Beidou navigation satellite in China has been greatly improved.
【作者单位】：中国测绘科学研究院;山东科技大学;
【基金】：国家自然科学青年基金项目(41404034) 中国博士后科学基金(2016M590715) 科研业务费(7771707)
【分类号】：P228;TN967.1

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