根据TDICCD特殊的工作方式，预测了由于地球自转而引起的极轨星载TDICCD相机的特殊像移及其对图像的影响，根据TDI像移产生的机理建立了数学模型，并求出了像移恢复滤波器的数字表达式，经过计算机仿真证明图像恢复算法有效。

Due to the special operation mode of TDI CCD, image shift is resulted from earth self_rotation in polar orbit sensing. This kind of image shift makes image degradation, resolution decrease, and target margin mistiness. Compensating the shifted image is an important problem that must be resolved in the application of polar orbit satellite TDI CCD camera. In this paper, the image shift of TDI CCD camera for polar orbit satellite is forecasted, then the effect of image degradation is calculated. A mathematical model is set up according to the principle of TDI image shift, and an image compensation filter is worked out, which is proved to be valid by computer simulation.