嫦娥四号着陆点区域高分辨率数字高程模型构建  

High-Resolution Digital Elevation Model Generation for Chang’e-4 Landing Site Area

作　　者：陈昊 刘世杰 童小华 胡明 CHEN Hao;LIU Shijie;TONG Xiaohua;HU Ming(College of Surveying and Geo-Informatics,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学测绘与地理信息学院

出　　处：《上海航天》2019年第3期35-39,共5页Aerospace Shanghai

基　　金：国家自然科学基金(41771483,41631178,41401531);国家重点研发计划(2017YFB0502903)

摘　　要：嫦娥四号登月探测器成功着陆于冯·卡门撞击坑内,实现了人类历史上首次月背软着陆。嫦娥四号登月探测器着陆区的高分辨率数字高程模型(DEM)对后续任务顺利开展至关重要,着陆点区域的三维地形可为月球探测提供关键空间信息支撑,但在嫦娥四号着陆点区域,月球轨道激光高度计生成的DEM/LOLADEM分辨率仅有30m,未见公布高分辨率DEM。基于高分辨率的月球勘测轨道飞行器窄角相机(LROCNAC)影像,利用摄影测量法和阴影恢复形状方法(SFS)针对嫦娥四号着陆点区域,生成了着陆点区域的高分辨率DEM。结果表明,SFS法生成的DEM分辨率更高,重建的地形更加精细。The Chang’e-4 lunar probe lands on the Von Karman crater successfully,achieving the first soft landing on the back of the moon throughout the human history. It is very important for the successful implementation of follow-up missions with the high-resolution digital elevation model (DEM) for the Chang’e-4 landing site area. Three-dimensional topography of the landing site area can provide critical spatial information for lunar exploration. In the Chang’e-4 landing area,the limited LOLA DEM resolution is only around 30 m per pixel,and the high-resolution DEM is not reported in any document. In this paper,high-resolution DEMs of the landing site area are generated by the photogrammetry method and the shape from shading (SFS) method based on the high-resolution lunar reconnaissance orbiter camera narrow angle camera (LROC NAC) images. The results show that the DEM generated by the SFS method has higher resolution,with more elaborate reconstructed terrain.

关 键 词：嫦娥四号登月探测器 冯·卡门撞击坑 数字高程模型 月球勘测轨道飞行器窄角相机(LROCNAC) 阴影恢复形状 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]