Research on Sub-pixel Imaging Technique Based on Quincunx Theory

The sub-pixel imaging technique is one of the valid new methods, which can reduce the size of cameraused in satellites and improve its spatial resolution. A novel method that combined the sub-pixel imaging technique with the TDI CCD camera is presented. The method can improve imaging system′s resolution sharply , while keeping the same size of TDI CCD sensor and focal length of the camera system. Based on theanalysis ofquincunx theory,the high-resolution image was obtained from the two images ofthe TDI CCD sub-pixel camera .The result shows that the resolution of sub-pixel imaging system can be improved 1.4times as many.