Abstract
To deal with the fast simulation of Synthetic Aperture Radar (SAR) echoes, in this paper, we introduce an fast digital simulation method based on Graphic Processing Unit (GPU). Model of SAR echoes is established at first. Then, the digital simulation for SAR echo of single pulse is optimized by improved concentric circle algorithm. Moreover, the parallel computation based on GPU is adopted to further accelerate the whole digital simulation of all the SAR echoes. In the end, the validity of the above fast digital simulation method of SAR echoes has been verified and the experimental results show that the above method can accelerate the simulation speed dramatically compared with the traditional one.
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