雷达仿真运行效率优化方法研究

摘要

Taking optimization of an ISAR serial simulation program as an example,the optimization method for radar simulation operating efficiency is studied based on multi-core computer.First,several commonly used parallel algorithms for radar signal simulation are summarized,including both the advantages and disadvantages of each algorithm,and the parallel granularity of radar simulation is also analyzed.Then,the time consumption of each computing unit,such as the computing unit for target echo generation,for simulation result display,and for pulse compression,is studied,as well as their optimizing strategy.The test results are analyzed.Finally,optimization of the ISAR serial simulation example is carried out by using various strategies,including high performance function library,multi-channel parallel pulse compression,fast recursive algorithm for echo simulation,target echo parallel simulation and pipeline parallelization.After comprehensive optimization,the program runs 6.7 times faster than before,showing the effectiveness and applicability of these optimization strategies.%以某逆合成孔径雷达串行仿真程序的优化为实例，基于多核微机研究雷达仿真运行效率优化方法。首先总结了目前常用的雷达信号仿真并行算法，指出了各自方法的优缺点，同时分析了雷达信号仿真中的并行粒度；然后研究了目标回波生成、仿真结果显示、脉冲压缩等各个计算单元的耗时情况和优化策略，并对测试结果进行了分析。最后采用高性能函数库、多通道并行脉压、回波模拟快速递推算法、目标回波并行仿真和流水线并行等多种策略对ISAR串行仿真实例进行了优化，综合优化后的程序运行速度提高为原来的6．7倍，表明了优化策略的有效性和实用性。