基于成像几何模型的火星探测器定位研究  

Positioning of Mars probes based on imaging geometric models

作　　者：盛庆红[1] 刘微微[1] 赵华[1,2] 

机构地区：[1]南京航空航天大学航天学院,江苏南京210016 [2]中国科学院空间科学与应用研究中心,北京100000

出　　处：《测绘工程》2012年第5期1-4,共4页Engineering of Surveying and Mapping

基　　金：国家自然科学基金资助项目(41101441)

摘　　要：对数亿千米之外的火星探测器进行跟踪导航定位,是火星探测的关键技术之一。目前,我国深空网尚未建成,利用中国VLBI网对火星探测器"火星快车"的定位精度仅约0.1as,难以为火星探测器的精密定轨提供数据保障。提出以遥感影像进行火星探测器几何定位的全新技术方法,利用严密传感器成像几何模型,通过地面控制点在物方空间坐标系中的坐标与其对应像点在像方坐标系中坐标之间的几何关系,解算探测器空间位置。对美国奥德赛号(Odyssey)火星探测器进行定位试验,精度达到了2.93mas,为我国火星探测器定位提供了理论和技术支持。Tracking and locating of Mars probes for hundreds of millions kilometers away is one of the key technologies of the Mars exploration. Now China＇s deep space network hasn＇t been constructed and the location accuracy of MEX by Chinese VLBI Network is only 0. 1 as, which is difficult to provide security for precise orbit determination of Mars probes. A new method of locating mars probes by using remote sensing images is proposed, which adopts strict sensor imaging geometric model through matching of ground control points and the corresponding image points. Result of positioning experiments on Odyssey shows that the new method makes the accuracy up to 2. 93 mas, providing theory and technical support for the location of Mars probes.

关 键 词：火星探测器 定位 成像几何模型 精度 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]