卫星姿态精度对TDICCD相机的影响

Effect of satellite attitude control accuracy on TDI CCD cameras

正确的姿态控制精度是TDICCD卫星相机正常工作的基本前提 .通过分析、计算卫星姿态控制精度导致的像移量及其与调制传递函数的对应关系 ,给出了TDICCD相机对卫星姿态精度的要求 .实例计算结果表明 ,TDICCD相机对卫星姿态控制精度的要求比普通CCD相机的要求高 ,且随着TDI积分级数的增加 。

The effect of satellite attitude control acuracy on TDI CCD cameras is discussed and the modulation transform functions of a camera are established for the abnormal motion of its images due to the changes of satellite attitude.Calculations show that,with the increase of TDI CCD integration number,the requirements of TDI CCD cameras for satellite attitude control accuracy are stringent than those of common CCD cameras.