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空间相机的成像参数往往受到卫星平台资源的限制,并不能全部由地面发送给相机,而是由卫星平台进行档位选择事先在相机里固化好的地面标定参数。由于空间环境的变化,空间相机在轨工作期间TDICCD均匀性会发生变化,从而影响成像质量。针对某航天离轴相机设计了一种空间TDICCD相机成像参数在轨重注的方法。首先,介绍相机的工作平台,确定在轨成像参数重注的设计方法;然后,介绍程序接收、缓存、校验以及存储参数数据的处理流程;最后,结合相机控制器软件专用检测模块验证该方法设计的正确性,并给出成像参数修改前后的TDICCD图像对比图,结果表明成像参数修改成功。
The imaging parameters of the space camera are often limited by the resources of the satellite platform and can not all be sent from the ground to the camera. Instead, the satellite platform selects the ground calibration parameters that have been fixed in advance in the camera. Due to the change of the space environment, the uniformity of the TDICCD will change during the operation of the space camera, thereby affecting the imaging quality. Aiming at a spacecraft off-axis camera, a method of in-orbit re-imaging of space TDICCD camera imaging parameters is designed. Firstly, the working platform of the camera is introduced to determine the design method of in-orbit imaging parameters re-injection; then, the procedure of receiving, caching, verifying and storing the parameter data is introduced; finally, the method is verified with the camera controller software testing module The correctness of the design and the comparison of the TDICCD images before and after the modification of the imaging parameters are given. The results show that the imaging parameters are modified successfully.