月球南极局部关键区域高分辨率三维地形构建  

High-resolution DEM Generation in Key Area of Lunar South Pole

作　　者：李新 刘世杰 晏雄锋 陈晨 卫玲玲 冯毅 童小华 LI Xin;LIU Shijie;YAN Xiongfeng;CHEN Chen;WEI Lingling;FENG Yi;TONG Xiaohua(College of Surveying and Geo-Informatics,Tongji University,Shanghai 200092,China;Shanghai Key Laboratory for Planetary Mapping and Remote Sensing for Deep Space Exploration,Shanghai 200092,China)

机构地区：[1]同济大学测绘与地理信息学院,上海200092 [2]上海市航天测绘遥感与空间探测重点实验室,上海200092

出　　处：《测绘与空间地理信息》2022年第7期47-51,54,共6页Geomatics & Spatial Information Technology

基　　金：国家自然科学基金项目(42171432);上海市科技计划项目(21511103800)资助。

摘　　要：月球南极永久阴影区内有水冰资源,因此其成为国际上月球探测的热点区域。月球南极探测着陆区选取、探测器着陆避障、月球车巡视路径规划等科学及工程任务的顺利开展都离不开高分辨率高精度的数字高程模型(Digital Elevation Model,DEM)提供的关键空间信息支撑。针对月球南极复杂环境给高分辨率高精度制图带来的不利影响,本文提出了一种基于点云配准和仿射配准的融合摄影测量法和明暗恢复形状法(Shape from Shading,SfS)的DEM构建方法,使用月球轨道器激光高度计(Lunar Orbiter Laser Altimeter,LOLA)DEM数据和月球勘测轨道飞行器窄角相机(Lunar Reconnaissance Orbiter Camera Narrow-Angle Camera,LROC NAC)影像等,构建了月球南极Shackleton撞击坑附近局部关键区域1.5 m分辨率的三维地形,建模结果与高精度LOLA数据具有较好的一致性。Lunar south pole is a key exploration area due to the potential water ice resources in parts of the permanent shadow area.The selection of landing area,the obstacle avoidance of lunar lander and the inspection path planning of lunar rover are all inseparable from the key spatial information support provided by high-resolution and high-accuracy DEM.In this paper,a new method based on point cloud registration and affine registration is proposed innovatively with the complex environment of the moon′s south pole,which combines photogrammetry and SfS.Using LOLA DEM data and LROC NAC images,a DEM with resolution of 1.5 m a key area near the Shackleton crater in the lunar south pole is constructed.The modeling result has a good consistency with the LOLA data.

关 键 词：月球南极 配准 数字高程模型 摄影测量 明暗恢复形状 

分 类 号：P231[天文地球—摄影测量与遥感]