Implementation of Chirp Scaling algorithm based on spaceborne real-time SAR processor

Based on the refined Chirp Scaling image formation algorithm, an efficient method for real-time processor on spaceborne synthetic aperture radar (SAR) was presented. Its key technique is applicable to other precise imaging algorithms for high resolution spaceborne SAR. The configuration of the real-time processor was introduced, the granularity of the data being processed and its parallel pipeline structure were analyzed. The processing flow for a single granularity was redesigned, and the efficient implementation method was discussed. Experiments were performed for the real-time processor using simulated SAR echo data. The whole progress was completed in 41 seconds. The conclusion is that the implementation method is validated by the processing speed and image quality, which meet the requirement of the system.