TDI-CCD (time-delayed-integration charge coupled device) camera real-time image motion digital compensation system and compensation method

The invention discloses a TDI-CCD (time-delayed-integration charge coupled device) camera real-time image motion digital compensation system and a compensation method. The image motion digital compensation method disclosed by the invention takes full advantage of a prerequisite condition of the ratio of push-broom speed to TDI-CCD charge transfer speed, and an IIR filter form of image motion compensation is inverted and deduced from a mechanism generated from the image motion at an integral direction; the real-time system of digital image motion compensation in a collecting process is realized by adopting a stream line mode and combining a hardware structure of the IIR filter; regarding that a digital image motion compensation module in a hardware comprises add and subtract operation, in the operation process, signed number of expansion digits is adopted to prevent data overflow and improve operation accuracy. The compensation system is composed of the TDI-CCD, an optical mechanical system, a detector driving and collecting plate, a USB (universal serial bus) interface device and an upper computer image motion compensation control and collecting software, comparing through the images compensation before and after, the real-time compensation of the image motion at the integral direction can be realized through the method and the system.