The ccd space remote sensing camera imaging is different from traditional film imaging . the grain dimension of photosensitive emulsion is so small compare with the blurs of optical system that it can be ignored . but the ccd pixel dimension is a few times of the blurs of optical system 这里则采用模拟试验及计算机仿真的方法来研究在空间移变条件下的ccd遥感相机的影像分辨力和像质问题，这种研究不仅在理论上是一种补充，在工程实践上也很有实际意义。
