Abstract: In many SAR (Synthetic Aperture Radar) imaging algorithm, the corner turning memory takes up much time during imaging processing. This paper uses VP (Vector processor) to implement CSA (Chirp Scaling Algorithm), so as to reduce time required for memory operation. So the VP is suitable for CSA imaging, and use of this method could improve the efficiency of SAR imaging. The essence is that VP could generate the appropriate address and could manage massive RAM. If a real time SAR imaging system is designed reasonably, RDA, Extend CSA will have this overhead.