“天绘一号”卫星在轨几何定标方法  

On-orbit Geometric Calibration for Mapping Satellite-1

作　　者：王重阳[1] 程挺 王慧[1] 闸旋[3] 秦向南[1] 

机构地区：[1]解放军信息工程大学地理空间信息学院 [2]61287部队 [3]海军海洋测绘研究所

出　　处：《海洋测绘》2016年第4期31-34,共4页Hydrographic Surveying and Charting

摘　　要：构建了"天绘一号"卫星三线阵影像的严格几何模型,并在此基础上提出了适用于"天绘一号"卫星三线阵相机的在轨几何定标模型,该模型将定标参数分为内外定标参数,并采用分部迭代策略解算。通过对登封地区两景影像的实验表明:本文的定标方法能较好地解决定标参数间的相关性问题;定标后平面精度达到了6.93m,高程精度达到了3.96m;将内外定标参数用于外推定位时,三视立体像对对地目标定位的平面和高程精度分别优于8m和9m。First, a rigorous geometric model of Mapping Satellite-1 （TH-1） three-line-array imagery is constructed. Second, an on-orbit geometric calibration method suitable for TH-1 three-line-array camera is proposed in which calibration parameters are partially calculated with a stepwise iterative method by dividing them into two groups ：external and internal ones.Two sets of TH-1 satellite images covering Songshan area are used ,respectively, the experimental results have shown that the method can effectively solve the problem of correlation between the calibration parameters, and the planimetric and height accuracies of three stereo pairs are 6.93m and 3.96m respectively after calibration. Additionally, after using external and internal calibration parameters for extrapolative object positioning of TH-1 satellite images, the planimetric and height accuracies of positioning of three stereo pairs are better than 8m and 9m respectively.

关 键 词：天绘一号卫星 在轨几何定标 严格几何模型 指向角 定位精度 

分 类 号：P236[天文地球—摄影测量与遥感]