卫星激光测距系统的指向偏差修正

为了控制激光测距望远镜准确指向目标,本文采用图像处理方法精确识别卫星位置,计算卫星质心相对于参考中心的偏差并转换为望远镜的脱靶量,从而通过伺服系统修正望远镜的指向偏差;同时识别光束图像,得到光尖位置并计算光尖点与接收视场中心的偏差量,修正激光束指向偏差。

Axis correction of satellite laser ranging system based on image processing technique

In order to control the laser ranging telescope to point to the target accurately,the image processing method is used to identify the satellite position accurately,the deviation between the satellite centroid and the reference center is calculated,and then is converted to correcting parameter of the telescope. Thus the deviation of the telescope can be corrected through the telescope servo system. At the same time,by identifying the beam image,the light point position is obtained,and deviation value between the light point and the received view center is calculated,the laser beam pointing deviation can be corrected and then both emitting and receiving error are corrected.