Geospatial technologies for Chang’e-3 and Chang’e-4 lunar rover missions  

作　　者：Kaichang Di Zhaoqin Liu Wenhui Wan Man Peng Bin Liu Yexin Wang Sheng Gou Zongyu Yue 

机构地区：[1]State Key Laboratory of Remote Sensing Science,Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Beijing,China

出　　处：《Geo-Spatial Information Science》2020年第1期87-97,共11页地球空间信息科学学报（英文）

基　　金：This work was supported by the National Natural Science Foundation of China[grant number 41671458,41590851,41941003,and 41771488].

摘　　要：This paper presents a brief overview of the geospatial technologies developed and applied in Chang’e-3 and Chang’e-4 lunar rover missions.Photogrammetric mapping techniques were used to produce topographic products of the landing site with meter level resolution using orbital images before landing,and to produce centimeter-resolution topographic products in near real-time after landing.Visual positioning techniques were used to determine the locations of the two landers using descent images and orbital basemaps immediately after landing.During surface operations,visual-positioning-based rover localization was performed routinely at each waypoint using Navcam images.The topographic analysis and rover localization results directly supported waypoint-to-waypoint path planning,science target selection and scientific investigations.A GIS-based digital cartography system was also developed to support rover teleoperation.

关 键 词：Geospatial technology lunar rover landing site mapping topographic analysis rover localization and navigation 

分 类 号：V476.3[航空宇航科学与技术—飞行器设计]