利用降落影像序列实现嫦娥三号系统着陆点高精度定位  

Chang'E-3 system pinpoint landing localization based on descent image sequence

作　　者：贾阳[1] 刘少创[2] 李明磊[2] 李群智[1] 彭松[1] 温博 马友青[3] 张烁[4] 

机构地区：[1]中国空间技术研究院北京空间飞行器总体设计部,北京100094 [2]中国科学院遥感与数字地球研究所,北京100101 [3]武汉大学遥感信息工程学院,武汉430079 [4]武汉大学测绘学院,武汉430079

出　　处：《科学通报》2014年第19期1838-1843,共6页Chinese Science Bulletin

摘　　要：准确确定嫦娥三号着陆器的着陆点是圆满完成嫦娥三号任务的一个重要标志,也是着陆器和巡视探测器开展后续科学探测任务的重要基础.本文通过对嫦娥三号着陆器降落相机获取的降落影像与嫦娥二号获取的着陆区高分辨率DOM影像进行联合处理,利用SIFT特征匹配、图像单应变换和立体视觉测量等技术,实现了嫦娥三号着陆器着陆点的高精度定位,该定位结果为遥操作系统对巡视探测器实施高效可靠的任务规划和指导科学目标探测提供了重要支持.Realizing the pinpoint landing localization for the Chang＇E-3 system is a symbol of success for this mission, and it is also a basic requirement for the lunar Lander and Rover to carry out the following scientific exploration tasks. In this paper, jointly dealing with the descent image sequence and Chang＇E-2 DOM data, an approach based on the images processing techniques, such as SIFT feature matching, homography transportation and stereo vision measurement, is presented to realize the pinpoint localization of the Chang＇E-3 system. The localization result is proved to be reliable and accuracy and the result will be a critical component for the Chang＇E-3 mission planning and the completion of scientific exploration.

关 键 词：降落影像 嫦娥三号系统 着陆点定位 单应变换 立体视觉 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]