北斗三号MEO卫星非保守力建模

doi:10.11947/j.AGCS.2022.20210319

测绘学报 ›› 2022, Vol. 51 ›› Issue (9): 1862-1869.doi: 10.11947/j.AGCS.2022.20210319

北斗三号MEO卫星非保守力建模

阮仁桂^1,2, 贾小林^1,2, 冯来平^1,2, 王龙^1,2, 张奋^1,2

1. 西安测绘研究所, 陕西西安 710054;
2. 地理信息工程国家重点实验室, 陕西西安 710054

收稿日期:2021-06-07 修回日期:2022-01-10 发布日期:2022-09-29
作者简介:阮仁桂(1983—),男,博士,助理研究员,研究方向为精密定轨、定位和时间同步。E-mail:rrg2002me@163.com
基金资助:
国家自然科学基金（42074025；41774012）；地理信息工程国家重点实验室基金（SKLGIE2019-ZZ-3）

Modeling non-conservative forces for BDS-3 MEO satellites

RUAN Rengui^1,2, JIA Xiaolin^1,2, FENG Laiping^1,2, WANG Long^1,2, ZHANG Fen^1,2

1. Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, China;
2. State Key Laboratory of Geo-Information Engineering, Xi'an 710054, China

Received:2021-06-07 Revised:2022-01-10 Published:2022-09-29
Supported by:
The National Natural Science Foundation of China (Nos. 42074025; 41774012); Foundation of State Key Laboratory of Geo-Information Engineering (No. SKLGIE2019-ZZ-3)

摘要/Abstract

摘要： 非保守力模型精度不高是制约BDS-3卫星定轨精度的主要因素之一。本文针对BDS-3 MEO卫星构建了地球辐射、天线辐射和箱体-两翼（BW）太阳光压模型，对典型的经验光压模型（ECOM1和ECOM2）进行补偿得到多个非保守力模型，收集全球观测网的数据进行定轨试验，通过轨道重叠互差和激光测距残差分析比较不同轨道模型的优劣。试验结果表明，经验光压模型是影响轨道精度的主要因素，在名义偏航模式下，ECOM2具有更好的表现，但ECOM1对卫星的姿态模式更不敏感。地球辐射和天线辐射会引起北斗卫星轨道径向约3 cm的系统性偏差，对二者建模后，几乎可以完全消除卫星C29和C30的激光残差系统偏差，但卫星C20和C21的系统偏差反而增大。此外，增加box-wing模型对于提高轨道精度也是有益的。

关键词: 北斗三号全球卫星导航系统, 太阳光压, 地球辐射, 天线辐射, 非保守力, 激光测距残差

Abstract: The non-conservative force (NCF) model is one of the main factors that restrict orbit accuracy of BDS-3 satellites. In this paper, several NCF models for BDS-3 MEO satellites were built by compensating typical empirical solar radiation pressure (SRP) models, i.e., the ECOM1 and ECOM2, with earth radiation pressure (ERP), antenna thrust (AT) and the box-wing SRP model. Experiments were carried out with globally distributed stations to compare different NCF models by analyzing the overlap orbit differences and SLR residuals. It's shown that the empirical SRP modes dominate the orbit precision and the ECOM2 is superior to ECOM1 under the nominal yaw steering (YS) mode, while the ECOM1 is less sensitive to different YS modes. The ERP and AT together cause a systematic deviation of about 3 cm in the radial direction of orbit. By modeling the ERP and AT, the SLR residuals bias of satellites C29 and C30 can be almost completely eliminated, but the bias of satellites C20 and C21 increases. In addition, introducing the box-wing model is also beneficial to improve the orbit accuracy.

Key words: BDS-3, solar radiation pressure, earth radiation pressure, antenna thrust, non-conservative forces, SLR residual

中图分类号:

P228

阮仁桂, 贾小林, 冯来平, 王龙, 张奋. 北斗三号MEO卫星非保守力建模[J]. 测绘学报, 2022, 51(9): 1862-1869.

RUAN Rengui, JIA Xiaolin, FENG Laiping, WANG Long, ZHANG Fen. Modeling non-conservative forces for BDS-3 MEO satellites[J]. Acta Geodaetica et Cartographica Sinica, 2022, 51(9): 1862-1869.

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北斗三号MEO卫星非保守力建模

Modeling non-conservative forces for BDS-3 MEO satellites

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