地月L2点中继星长阴影影响研究
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摘要
地月L2点中继星环绕地月L2点飞行时,会经历由地球或月球遮挡太阳而产生的阴影,部分阴影时长较长,中继星进入长阴影,严重时会威胁卫星平台安全。基于月球背面软着陆探测工程目标和中继星绕飞地月L2点halo轨道特性,分析长阴影的分布特征,以及阴影时长与轨道相位、振幅、构型等因素的关系,进而对长阴影的规避方法和适用范围进行探讨。研究结果为地月L2点中继星长阴影问题提供了分析方法和应对方案。
During the flight of relay satellite around Earth-Moon L2 libration point,there will be shadows caused by Earth and Moon. Some of the shadow durations are very long. Satellite platform security would be threatened when relay satellite in the long shadow period. Based on the engineering objective of lunar far side soft landing exploration and the halo orbit features of the relay satellite around the Earth-Moon L2 libration point,long shadows characteristics are analyzed,such as the distributions,and the correlations of shadow durations to halo orbit phase,amplitude,and configuration. Long shadow avoidance strategies and applicable scopes are discussed. Research results provide analysis method and solutions to long shadows of relay satellite around Earth-Moon L2 libration point.
During the flight of relay satellite around Earth-Moon L2 libration point,there will be shadows caused by Earth and Moon. Some of the shadow durations are very long. Satellite platform security would be threatened when relay satellite in the long shadow period. Based on the engineering objective of lunar far side soft landing exploration and the halo orbit features of the relay satellite around the Earth-Moon L2 libration point,long shadows characteristics are analyzed,such as the distributions,and the correlations of shadow durations to halo orbit phase,amplitude,and configuration. Long shadow avoidance strategies and applicable scopes are discussed. Research results provide analysis method and solutions to long shadows of relay satellite around Earth-Moon L2 libration point.
引文
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[2]刘林,侯锡云.深空探测器轨道力学[M].北京:电子工业出版社,2012.
[3]FARQUHAR R W.The control and use of libration point satellites[D].Stanford:Astronautical Sciences,1968.
[4]THOMAS M A.Geology of the Moon[M].USA:Princeton University Press,1972.
[5]梁伟光,周文艳,周建亮.地月系L2平动点卫星月掩规避问题分析[J].航天器工程,2015,24(1):44-49.LIANG W G,ZHOU W Y,ZHOU J L.Analysis of lunar occultation Avoidance of satellite around L2 libration point in the Earth-Moon system[J].Spacecraft Engineering,2015,24(1):44-49.