For increasing the star sensor data update rate method

The present invention is a method for star sensor update rate data is improved. First, the star sensors follow the next frame predicted image plane position window, then the window size according to the amount of data read and limits further determine the optimum exposure and read row line and outputting information; star sensor control logic when the exposure and read sensing chip, only the exposure information based on the input and reads the corresponding image data line, and press the window memory; star sensor and a software logic device rows interactive information and image data, using cyclic manner index information correspond. The present invention uses the loop index of the way, to ensure that the data in the three-stage pipeline calculating image exposure, image data storage, and software correspond exactly.