Preprocessing of Beijing-1 small satellite images

This paper presents whole pre-processing streamline of Beijing-1 small satellite images and focuses on some of the key issues in specific or improved data acquisition and processing. Characteristics of small satellite and peculiarities in the image pre-processing are analyzed, design and skeleton of the pre-processing system is expounded, and then, some of the key issues encountered and explored during processing of Beijing-1 small satellite data are discussed. The discussed issues include relative calibration, onboard compression, jitter removal and exposure control. The works in this paper are done with integration exploration based on systematic consideration of whole imaging and processing process, and are all testified with practical implementation.