Integration time interpolation control of space-borne TDICCD

Spacecraft orbits around the earth are basically elliptical orbits. That the altitude varies with motion of the remote sensing satellites results the ground resolution varies. Adjusting the integration time of image sensor can remain the accurate ground resolution.Similarly, the change of the satellites attitude leads to the variation of the ground resolution, which can be correct by adjusting the integration time of the image sensor. This paper presents an integration time interpolation arithmetic, which increases the adjustment rate of integration time of image sensor to make the space borne image sensor adapt to changes in orbit timely to ensure ground resolution. The arithmetic is implemented in FPGA, and this paper describes the results in the end.