基于多核DSP的星载SAR干扰信号生成算法优化  

Real-time Generation Algorithm Optimization Method of Deceptive Jamming Signal for Space-borne SAR Based on Multicore DSP

作　　者：徐贶 孙清洋 舒汀[1] 郁文贤[1] XU Kuang;SUN Qingyang;SHU Ting;YU Wenxian(Shanghai Key Laboratory of Intelligent Sensing and Recognition, Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学上海市智能探测与识别重点实验室

出　　处：《现代雷达》2018年第11期27-30,36,共5页Modern Radar

基　　金：航空科学基金项目(2015ZD07006)

摘　　要：针对星载合成孔径雷达(SAR)的特点,提出了一种基于多核数字信号处理器(DSP)的欺骗式干扰实时产生算法优化方法,该方法使用了哈希查找表、动态/静态计算分离等技术,并针对DSP芯片硬件架构进行算法优化,达到了实时生成星载SAR欺骗式干扰信号的目的,为星载SAR欺骗式干扰信号实时产生提供了技术手段,并为其他基于DSP的数字信号处理算法提供了一种可行的优化思路。文中针对算法设计与工程实现中影响实时性的关键问题进行分析,并针对典型合成孔径雷达进行验证,证明了该方法的有效性与实时性。In this paper,a real-time generation algorithm optimization method of deceptive jamming signal for space-borne synthetic aperture radar( SAR) based on multicore DSP is proposed. Hash lookup table,dynamic/static computational separation and other techniques based on DSP hardware architecture are used in this method. The purpose of real-time generation of deceptive jamming signal for space-borne SAR is achieved,which provides a feasible optimization idea for other DSP-based algorithms. Several key problems that can affect real-time performance are analyzed in algorithm design and engineering implementation. The verification of typical SAR is carried out,and the effectiveness and real-time of the method are proved.

关 键 词：星载合成孔径雷达 多核DSP 欺骗式干扰 

分 类 号：TN957.51[电子电信—信号与信息处理]