月球南极区域不同高度光照条件计算方法及其在着陆点选址中的应用  

A method for calculating illumination at different elevations in the lunarsouth pole and its application in landing site selection

作　　者：苏秀中 葛平 张天馨 康焱 周艾玉 李云飞 胡震宇 SU Xiuzhong;GE Ping;ZHANG Tianxin;KANG Yan;ZHOU Aiyu;LI Yunfei;HU Zhenyu(Aerospace System Engineering Shanghai,Shanghai 201109,China;Lunar Exploration and Space Engineer Center,Beijing 100190,China;Deep Space Exploration Laboratory,Beijing 100195,China)

机构地区：[1]上海宇航系统工程研究所,上海201109 [2]探月与航天工程中心,北京100190 [3]深空探测实验室,北京100195

出　　处：《航天器环境工程》2024年第4期397-403,共7页Spacecraft Environment Engineering

基　　金：国家重大科技专项工程。

摘　　要：针对目前月球南北极探测中多数月面光照条件计算方法得出的结果误差大,难以在航天任务规划和科学研究中应用的问题,提出考虑高精地形的月球南北极光照条件实时计算方法:基于目前已有的最高精度地形数据,通过逐方位角搜索地平线并计算仰角,再结合太阳高度角和太阳圆盘视直径,得到该地点光照条件的计算结果。该方法的光照条件计算结果准确,同时可自定义地形搜索范围和精度,进一步可输出任意时间跨度的当地光照情况。基于该方法选取月球南极若干点作为预选着陆点,计算各着陆点在离地高度分别为2、5、8、10、15 m处的全年平均光照率,并分析离地高度对光照条件的影响规律,为后续任务设计提供参考。At present,the results obtained by most methods for calculating lunar illumination conditions in the lunar polar exploration often have large errors,making them difficult to be applied in space mission planning and scientific research.Therefore,a real-time calculation method for illumination conditions in the lunar polar regions considering high-precision terrain was proposed in this paper.Based on the currently available highest resolution terrain data,the calculation results of illumination conditions at a specific location were achieved by searching the horizon and calculating the elevation angle with azimuth,and by combining the solar zenith angle and apparent solar disk diameter.This method provides accurate calculations of illumination conditions and allows for the customization of terrain search range and accuracy.Furthermore,it outputs illumination conditions for any desired time span.Based on the method,several locations in the lunar south pole were selected as candidate landing sites.The annual average illumination rate for each landing site at elevations of 2,5,8,10,15 m were calculated and the influence of elevations on the illumination condition were analyzed.The proposed study may provide a reference for the subsequent missions.

关 键 词：月球南极 数字高程模型 光照条件 着陆点选址 

分 类 号：P184.5[天文地球—天文学] V476.3[航空宇航科学与技术—飞行器设计]