定向片用于天绘一号卫星三线阵影像自检校光束法平差

Orientation Image Model on Self-Calibration Bundle Adjustment for Mapping Satellite-1 Tree-Line Imagery

针对天绘一号卫星三线阵传感器,利用定向片模型描述其外方位元素变化特征;同时综合线阵CCD和相机系统误差等影响,构建自检校参数模型。利用两景真实数据进行自检校光束法平差实验。结果表明,合适的定向片间隔选取和自检校参数建模能够有效提升目标定位精度。

For the three liner-array sensor of Mapping Satellite-l, the orientation image model was used to describe the variational character of exterior parameters. Meanwhile, the self-calibration model was constructed including the systematic errors of CCD line and camera system. Using two views reality data, the self-calibration bundle ad- justments were researched on. The results showed that the proper fixes of orientation image and self-calibration pa- rameters model could improve the bundle adjustment accuracy efficiently.