SWARM卫星简化动力学厘米级精密定轨

doi:10.11947/j.AGCS.2016.20160284

测绘学报 ›› 2016, Vol. 45 ›› Issue (11): 1278-1284.doi: 10.11947/j.AGCS.2016.20160284

SWARM卫星简化动力学厘米级精密定轨

张兵兵¹, 聂琳娟^1,2, 吴汤婷¹, 冯建迪¹, 邱耀东¹

1. 武汉大学测绘学院, 湖北武汉 430079;
2. 湖北水利水电职业技术学院, 湖北武汉 430070

收稿日期:2016-06-12 修回日期:2016-08-11 出版日期:2016-11-20 发布日期:2016-12-03
通讯作者: 聂琳娟 E-mail:ljnie@whu.edu.cn
作者简介:张兵兵(1989-),男,博士生,研究方向为低轨卫星精密定轨。E-mail:bbzhang@whu.edu.cn
基金资助:
国家973项目（2013CB733301；2013CB733302）；国家自然科学基金（41274032；41210006；41474018）

Centimeter Precise Orbit Determination for SWARM Satellite via Reduced-dynamic Method

ZHANG Bingbing¹, NIE Linjuan^1,2, WU Tangting¹, FENG Jiandi¹, QIU Yaodong¹

1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
2. Hubei Water Resource Technical College, Wuhan 430070, China

Received:2016-06-12 Revised:2016-08-11 Online:2016-11-20 Published:2016-12-03
Supported by:
The National Basic Research Program of China (973 Program) (Nos. 2013CB733301, 2013CB733302), The National Natural Science Foundation of China (Nos. 41274032, 41210006, 41474018)

摘要/Abstract

摘要： 联合星载GPS双频观测值与简化的动力学模型，在卫星运动方程中引入适当的伪随机脉冲参数，对SWARM卫星进行精密定轨。采用星载GPS相位观测值残差、重叠轨道以及与外部轨道对比等3种方法对SWARM卫星简化动力学定轨结果进行检核。结果表明：SWARM星载GPS相位观测值残差RMS为7~10 mm；径向、切向以及法向6 h重叠轨道差值RMS均在1 cm左右，3个方向均无明显的系统误差。通过与欧空局（ESA）发布的精密轨道进行对比分析，径向轨道差值RMS为2~5 cm，切向轨道差值RMS为2~5 cm，法向轨道差值RMS为2~4 cm，3D轨道差值RMS为4~7 cm；SWARM-B定轨精度优于SWARM-A与SWARM-C。因此，采用简化动力学法与本文提供的定轨策略进行SWARM卫星精密定轨是切实可行的，定轨结果良好且稳定，定轨精度达到厘米级。

关键词: SWARM卫星, 伪随机脉冲, 简化动力学方法, 定轨策略, 厘米级

Abstract: 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.

Key words: SWARM satellite, pseudo-stochastic pulses, reduced-dynamic method, orbit determining strategy, centimeter level

中图分类号:

P228

张兵兵, 聂琳娟, 吴汤婷, 冯建迪, 邱耀东. SWARM卫星简化动力学厘米级精密定轨[J]. 测绘学报, 2016, 45(11): 1278-1284.

ZHANG Bingbing, NIE Linjuan, WU Tangting, FENG Jiandi, QIU Yaodong. Centimeter Precise Orbit Determination for SWARM Satellite via Reduced-dynamic Method[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(11): 1278-1284.

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SWARM卫星简化动力学厘米级精密定轨

Centimeter Precise Orbit Determination for SWARM Satellite via Reduced-dynamic Method

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