太阳敏感器测量坐标系与立方镜转换矩阵的标定（重投）

提出一种太阳敏感器测量坐标系与立方镜坐标系转换矩阵标定的方法。该方法首先利用太阳模拟器和两轴转台，对太阳敏感器测量坐标系与转台坐标系进行标定。然后利用光阑接受屏和CCD图像瞄准定位系统，对立方镜坐标系和转台坐标系进行标定，最后以转台坐标系作为中间坐标系计算出所述两坐标系的转换矩阵，从而将太阳敏感器测量的太阳视线方向间接转换到立方镜坐标系。实验结果表明两坐标系转换矩阵的标定精度优于4(1σ)，满足太阳敏感器测量精度要求。该方法不需要精准的加工和安装工艺，同时对两坐标系转换矩阵的标定也不需要太阳敏感器测量坐标系与转台坐标系保持一致，易于实现，具有实用价值。

Calibration of sun sensor and cubic prism coordinate system

A method for calibration transform matrix between sun sensor and cubic prism coordinate system was proposed. First, sun sensor and 2D rotator coordinate system was calibrated with sun simulator and high-accuracy 2D rotator. Second, cubic prism and 2D rotator coordinate system was calibrated with diaphragm screen and CCD image-collimate system. Finally, the transform matrix between sun sensor and cubic prism coordinate system was derived with 2D rotator as medial coordinate system. Thereby, Sun vector measured by sun sensor was indirectly transferred to cubic prism coordinate system. Experiment show that the calibration precision was better than 4(1σ) and meet the requirement of sun sensor measurement. The method need not precise machining and installation, and make it unnecessary that sun sensor and 2D rotator coordinate system should be the same when calibration. The method was easy to carry out and valuable for application.