基于ZYNQ的机载SAR实时回波仿真研究  

Real-Time Echo Simulation of Airborne SAR Based on ZYNQ

作　　者：赵文达 韩松 ZHAO Wen-da;HAN Song(Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China;University of Chinese Academy of Sciences,Beijing 100049,China;Institute of Electronics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国科学院空天信息创新研究院,北京100094 [2]中国科学院大学,北京100049 [3]中国科学院电子学研究所,北京100190

出　　处：《计算机仿真》2021年第8期64-69,共6页Computer Simulation

基　　金：国家重点研发计划(2017YFB0503001)。

摘　　要：机载合成孔径雷达硬件架构和成像算法的不断发展对复杂大尺度目标的实时回波仿真提出了更高要求。为了实现雷达仿真器实时和多模式性能的提升,基于Xilinx可编程逻辑SoC平台ZYNQ设计了机载合成孔径雷达实时回波仿真器,将改进二维快速傅里叶变换的回波仿真算法与具体硬件实现流程结合,提出了基于AXI总线PS-PL互联的脚本式CORDIC回波仿真方法,实现了复杂面目标回波的实时仿真。对于雷达目标模型高精度仿真算法研究,高性能便携式实验室回波仿真器研制,以及多模式回波仿真方法与高性能硬件平台的结合具有重要的实践参考意义。通过对比计算机仿真结果与仿真器实验室测试结果,证明了基于上述方法的机载合成孔径雷达回波仿真器的高效性和完整性。In order to improve the real-time and multi-mode performance of radar simulator,an airborne synthetic aperture radar real-time echo simulator was designed based on Xilinx programmable logic SoC platform zynq.Meanwhile,combining the echo simulation algorithm of the improved two-dimensional fast Fourier transform with the specific hardware implementation process,a script CORDIC echo simulation method based on Axi bus ps-pl interconnection was proposed to realize the real-time simulation of complex surface target echo.Firstly,two-dimensional FFT simulation algorithm was used to effectively combine the target model and data interface.Secondly,ZYNQ PS-PL AXI bus interconnection was used to support the script-CORDIC methods for real-time signal generation.Several experiments validate high efficiency and consistency of the whole essential design parts.

关 键 词：机载合成孔径雷达 回波仿真 高速数字信号处理 现场可编程门阵列 

分 类 号：TN955[电子电信—信号与信息处理]