The echo simulator has great significance to the research on synthetic aperture radar (SAR), but massive computation and longer time are needed. In order to realize SAR echo simulation fast, the field programmable gate array (FPGA) is adopted as the kernel chirp to design the digital signal processing board to be specially used in SAR echo simulation. The simulation algorithm is realized on the board by programming. The application result shows that the realization of SAR echo simulator based on FPGA can greatly accelerate the simulation speed and significantly reduce energy consumption.
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