基于机群计算的星载SAR回波并行仿真研究  

Study of parallel simulation of spaceborne SAR echo based on cluster computing

作　　者：张超[1] 李景文[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100083

出　　处：《计算机工程与应用》2007年第25期98-101,共4页Computer Engineering and Applications

摘　　要：在星载合成孔径雷达(SAR)回波仿真时域算法和基于FFT的频域模拟算法的基础上,对星载SAR回波仿真的并行化算法进行了研究。基于通用计算机平台构成机群,采用SOCKET通信机制进行消息传递及数据传送,实现了回波仿真的并行化处理。通过对并行算法加速性能的分析,证明了该算法能有效地加速回波仿真的进程。利用Chirp Scaling(CS)算法对仿真数据进行成像,验证了该算法的有效性。On the basis of time-area arithmetic and frequency-area arithmetic based on FFT of echo simulation of spaceborne Synthetic Aperture Radar（SAR）,the parallel arithmetic of SAR echo simulation is investigated.Based on the platform of PC form- ing cluster,adopting corresponding regulation of SOCKET in transferring message and data,the parallel method is actualized.By analysis of accelerated performance,the parallel method is proved effective in accelerating the course of echo simulation,and Chirp Scaling（CS） arithmetic is used to imaging to the simulated data testified the validity of the parallel arithmetic.

关 键 词：星载SAR 回波并行仿真 机群计算 SOCKET 

分 类 号：TP393.09[自动化与计算机技术—计算机应用技术]