基于天绘一号卫星三线阵影像在轨几何检校与精度分析  

On-orbit Geomatric Calibrition and Precision Analysis based on Three-line Array Camera's Images of Mapping Satellite-1

作　　者：莫毅君 王一[1,2] 明朝辉[3] 

机构地区：[1]西安航天天绘数据技术有限公司,西安710021 [2]长安大学,西安710021 [3]山东科技大学,青岛266510

出　　处：《数字通信世界》2015年第6期31-34,共4页Digital Communication World

摘　　要：针对天绘一号卫星三线阵传感器,综合前视、正视、后视影像的主点、主距及相机夹角变化等影响,同时考虑姿态元素变化特征,建立严密几何标定模型。利用天绘一号七个实验场的三线阵1A影像数据和控制点数据进行几何参数检校和定位精度检测,检测结果表明:通过多个实验区标定结果取均值做为最终标定值,天绘一号卫星无控定位精度可以满足1︰5万立体测图要求。The strict geometric calibration model of Mapping-1 Satellite's three-line array camera was established. The model considered the influence of three directions(forward, nadir and backward) images' principal point, principal distance, camera angle changes and so on. Menwhile, the feature of attitude parameter changes were taked into account.1A product of Mapping-1 Satellite's three-line array camera and Mapping-1 Satellite's control point data at seven experimental fields were processed. The experiments included geometric parameters calibration and positioning accuracy detection. The results showed that non-GCP positioning accuracy can meet the map scale of 1: 50000 requirements, through taking the mean of several experimental regions' calibration results as the final calibration value.

关 键 词：天绘一号卫星 相机夹角变化 几何参数检校 无控定位 

分 类 号：V474.2[航空宇航科学与技术—飞行器设计]