Research on the influence of the velocity-height ratio of a remote sensing camera on image quality

The image angular velocity is changed by the variation of the velocity-height ratio (V / H) on the focal plane when the high-resolution satellite remote sensing time image delay-charge coupled device (TDICCD) camera is working with some scrolling angle, which will deteriorate the image quality of the camera. Thus, the variation regularity of the V / H is researched. The function of the V / H, which varies with the latitude and the scrolling angle, first is deduced according to the geometrical relationship of the slant distance of the camera and the velocity variation regularity of the subastral point. Then, the influence of image shifts on the image quality, caused by variation of the V / H, is analyzed based on the latitude and the scrolling angle, respectively. Finally, the regulation interval of the row integration time and the permitted range of the scroll angle are computed based on the given orbital parameters for different integration orders. The research results provide a good reference to learn about the variation regularity of the image quality when the camera is working. (C) 2017 Optical Society of America