深空探测学报（中英文）2024，Vol.11Issue(4)：414-420,7.DOI:10.15982/j.issn.2096-9287.2024.20230010
动量轮卸载对"天问一号"环火轨道影响分析
The Effect of Wheel Off-Loading on the Orbit of Tianwen-1
摘要
Abstract
In view of the disturbance of the frequent Wheel Off-Loading(WOL)of Tianwen-1,firstly,this paper analysed the perturbation magnitude of WOL and the effect on the orbit in its relay and remote sensing orbits.Secondly,a uniform acceleration model in RTN coordinate system was established to describe the acceleration produced by WOL events,several strategies were proposed to analyze the orbit of the relay and remote sensing orbit respectively,and finally orbital accuracy was assessed by overlap comparison.The results show that WOL events are the main error,affecting orbital accuracy.The position accuracy of the relay orbit is about 150 m,and in the remote sensing orbit where the unloading events are more frequent,the position accuracy decreases to 700 m.关键词
天问一号/动量轮卸载/轨道计算/精度分析Key words
Tianwen-1/wheel off-loading/orbit determination/precision analysis分类
航空航天引用本文复制引用
孔静,张宇,陈明,段建锋,李翠兰..动量轮卸载对"天问一号"环火轨道影响分析[J].深空探测学报（中英文）,2024,11(4):414-420,7.基金项目
近地小天体的地基雷达天文观测研究和轨道改进技术资助项目(11973015) （11973015）
