A parameter optimization method with adjustment of integration time is proposed with analysis of the imaging process and the affecting factors.An imaging parameter setting model is brought up.The model parameter calculation and selection are discussed.Specific post-processing of the images acquired with the proposed method is analyzed.Experiment is carried out with Beijing-1 small satellite data for optimized imaging and comparison.Results show that images acquired with the optimized method have wider dynamic range and higher radiometric resolution

and with advanced information entropy and signal noise ratio.