月面巡视器近距离单摄站定位及精度分析  

Lunar rover positioning and precision analysis for single closed station based on image

作　　者：徐辛超[1,2] 徐爱功[1] 刘少创[2] 魏士俨[2] 马友青[2] 

机构地区：[1]辽宁工程技术大学测绘与地理科学学院,辽宁阜新123000 [2]中国科学院遥感应用研究所,北京100101

出　　处：《测绘科学》2015年第3期3-7,共5页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41071298;41401535);国家测绘地理信息局测绘基础研究基金资助项目(12-01-05)

摘　　要：针对巡视探测器在驶离着陆器后近距离状态下的高精度定位需求,该文提出了基于影像的单摄站定位方法,设计了两组不同的实验分别验证空间后方交会迭代法、直接法和线性变换法的稳定性和定位精度。实验结果表明:空间后方交会迭代法具有较好的稳定性和精度,适合用于巡视探测器的近距离定位;在控制点量测精度确定的情况下,算法最终定位精度与巡视探测器至着陆器的距离近似成反比;当有观测条件不好的控制点参与定位时,定位精度会随之降低,剔除该控制点可以提高定位精度。For the high-precision positioning requirements of lunar rover after leaving the lunar lander but in close range,the paper proposed an image-based positioning method in single station.Two different sets of experiments were designed to validate the stability and positioning accuracy of different algorithms as space resection iterative method,direct method and linear transformation method.The experimental results showed that space resection iterative method had better stability and accuracy,suitable for lunar rover positioning under short-range;the algorithm positioning accuracy was approximately inversely proportional to the distance between lunar rover and lunar lander when the measurement accuracy of control points were fixed;positioning accuracy would decrease when the control points in poor observing conditions were participate positioning,excluding those control points could improve the positioning accuracy.

关 键 词：探月工程 月面着陆器 巡视探测器 定位 

分 类 号：P228.5[天文地球—大地测量学与测量工程]