The hardware implementation of real-time SAR signal processor

This paper considers an implement of real-time signal processor for high resolution SAR(Synthetic Aperture Radar) imaging. In many tasks, we need the SAR imaging take in time, so the real-time processor becomes more and more important. On the basic SAR imaging principle, it is well known that the high range resolution depends on the transmitted signal bandwidth, while high azimuth resolution results from space Doppler frequency bandwidth. With the increasing of frequency bandwidth, the rate of sampling increases, so the fast processor is required in high resolution real-time SAR imaging. To address this need, we discussed how the high speed general DSP and special DSP are applied for high resolution real-time imaging, and the good performance is obtained.