Centimeter precise orbit determination for SWARM satellite via reduced-dynamic method

被引：0
|
作者：
Zhang B. [1 ]
Nie L. [1 ,2 ]
Wu T. [1 ]
Feng J. [1 ]
Qiu Y. [1 ]
机构：
[1] School of Geodesy and Geomatics, Wuhan University, Wuhan
[2] Hubei Water Resource Technical College, Wuhan
来源：
Cehui Xuebao/Acta Geodaetica et Cartographica Sinica | 2016年 / 45卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Centimeter level; Orbit determining strategy; Pseudo-stochastic pulses; Reduced-dynamic method; SWARM satellite;
D O I：
10.11947/j.AGCS.2016.20160284
中图分类号：
学科分类号：
摘要：
Combining dual-frequency satellite-borne GPS observations with reduced dynamic models, and introducing proper pseudo-stochastic pulse parameters into the satellite's motion equation, SWARM satellite precise orbit determination is implemented. The orbit accuracy is assessed using three methods, which include analysis satellite-borne GPS phase observation residuals, orbit overlaps and external orbit comparisons. The results indicate that the SWARM satellite-borne GPS phase observation residual RMS is in the range of 7 to 10 mm, radial, along-track and cross-track orbit overlap difference RMS of 6 hours are about 1 cm, three directions have no significant systematic errors, comparisons with orbits computed by European Space Agency (ESA), Radial orbit difference RMS is in the range of 2 to 5 cm, along-track orbit difference RMS is in the range of 2 to 5 cm, cross-track orbit difference RMS is in the range of 2 to 4 cm, 3D orbit difference RMS is in the range of 4 to 7 cm, SWARM-B orbit accuracy is better than SWARM-A and SWARM-C. This evaluations indicate that SWARM satellite precise orbit determination is practicable by using reduced-dynamic method and orbit determining strategy in the article, the orbit solution is well and stable, the orbit accuracy reaches centimeter level. © 2016, Surveying and Mapping Press. All right reserved.
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收藏
页码：1278 / 1284
页数：6
相关论文
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