摘要
讨论了仅利用星间测距观测值进行导航卫星自主定轨时所遇到的星座整体旋转问题,分析了潮汐摄动对升交点赤经以及导航卫星自主定轨的影响。模拟计算结果表明,潮汐对自主定轨的切向和法向误差的影响较大,而且这种影响随着自主定轨时间的增加会越来越大,在第110 d时,其影响可达4 m,由此指出了在高精度自主定轨中顾及潮汐摄动的必要性。
We firstly discuss the constellation rotation errors of autonomous orbit determination of navigation satellites, which only make use of crosslink ranging observation. Then, we comprehensively analyze the influence of tide perturbation on right ascension of the ascending node and autonomous orbit determination. The processing results of 110 days' simulation data indicate that tide perturbation has a great impact on the errors of along-track and cross of autonomous orbit determination. Moreover, the impact will become bigger with the increase of days of the autonomous orbit determination. The difference of along-track and cross of autonomous orbit determination on the 110 days because of to tide perturbation is about 4 meters. Therefore, the necessity that consider the influence of tidal perturbation in high-precision autonomous orbit determination is proposed.
出处
《武汉大学学报(信息科学版)》
EI
CSCD
北大核心
2009年第12期1394-1398,共5页
Geomatics and Information Science of Wuhan University
基金
国家863计划资助项目(2009AA12Z301)
国家自然科学基金资助项目(40874017)
国家教育部高等学校博士学科点专项科研基金资助项目(20050486040)
关键词
导航卫星
自主定轨
星座整体旋转
潮汐摄动
navigation satellite
autonomous orbit determination
constellation rotation
tide perturbation