亚像元动态成像技术是目前实现卫星相机小型化及提高相机空间分辨率的一种有效方法。在不改变TDICCD相机的焦距、成像距离,以及TDI CCD器件的像元尺寸的前提下,亚像元动态成像技术可以提高相机的空间分辨率。利用B样条插值算法,研究了TDI CCD相机的图像的亚像元动态插值问题,由两幅相机输出的原始图像经过算法得到比原图像分辨率高的图像,并对比了该算法与其它几种算法的效果,分析结果表明,该算法较其它算法得到的高分辨率图像的效果更佳。 Sub-pixel dynamic imaging technology is currently an effective way to miniaturize satellite cameras and improve the resolution of the camera’s space. The sub-pixel dynamic imaging technology can improve the spatial resolution of the camera without changing the focal length of the TDICCD camera, the imaging distance, and the pixel size of the TDI CCD device. The B-spline interpolation algorithm is used to study the sub-pixel dynamic interpolation of the image of TDI CCD camera. The original images output by the two cameras get the image with higher resolution than the original image, and compare the algorithm with other several The results show that the proposed algorithm is more effective than other high resolution images.