基于多核DSP的星载SAR干扰信号生成算法优化
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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.
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.
引文
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[4]ZHOU F,ZHAO B,TAO M,et al.A large scene deceptive jamming method for space-borne SAR[J].IEEE Transactions on Geoscience and Remote Sensing,2013,51(8):4485-4486.
[5]LIU Y,GONG S,WEI X.Deceptive moving targets jamming to SAR based on airborne platform[C]//IEEE 11th International Conference on Signal Processing(ICSP).Beijing:IEEE Press,2012:1905-1909.
[6]CAMPOREALE C,GALATI G.Digital computer simulation of synthetic aperture systems and images[J].Telecommunication and Related Technologies,1991,2(3):343-352.
[7]CUMMING I G,WONG F H COLUMBIA U B,et al.Digital signal processing of synthetic aperture radar data:algorithms and implementation[M].Norwood,MA:Artech House,2004.
[8]陈粲.星载SAR地面目标回波模拟的RTPC与2DFFT算法对比[J].科学技术与工程,2011,26(11):6329-6336.CHEN Can.The comparison between space-borne ground target echo simulation algorithm RTPC and 2DFFT[J].Science Technology and Engineering,2011,26(11):6329-6336.
[9]FRANCESCHETTI G,MIGLIACCIO M,RICCIO D,et al.SARAS:a synthetic aperture radar(SAR)raw signal simulator[J].IEEE Transactions on Geoscience and Remote Sensing,1992,30(1):110-122.
[10]丁晨聪,孙清洋,舒汀.星载SAR欺骗式干扰信号的实时产生技术研究[J].现代雷达,2016,38(7):78-82.DING Chencong,SUN Qingyang,SHU Ting.Research on realtime generation technique of deceptive jamming signal for space-borne SAR[J].Modern Radar,2016,38(7):78-82.
[2]ZHANG H,TANG Y,WU G,et al.SAR deceptive jamming signal simulation[C]//2007 1st Asian and Pacific Conference on Synthetic Aperture Radar.Huangshan:IEEE Press,2007:61-64.(下转第36页)
[3]SUN L,ZHANG H R,TANG Y S,et al.Research on deceptive jamming technologies against SAR[C]//2009 2nd Asian-Pacific Conference on Synthetic Aperture Radar.Xi'an:IEEE Press,2009:521-525.
[4]ZHOU F,ZHAO B,TAO M,et al.A large scene deceptive jamming method for space-borne SAR[J].IEEE Transactions on Geoscience and Remote Sensing,2013,51(8):4485-4486.
[5]LIU Y,GONG S,WEI X.Deceptive moving targets jamming to SAR based on airborne platform[C]//IEEE 11th International Conference on Signal Processing(ICSP).Beijing:IEEE Press,2012:1905-1909.
[6]CAMPOREALE C,GALATI G.Digital computer simulation of synthetic aperture systems and images[J].Telecommunication and Related Technologies,1991,2(3):343-352.
[7]CUMMING I G,WONG F H COLUMBIA U B,et al.Digital signal processing of synthetic aperture radar data:algorithms and implementation[M].Norwood,MA:Artech House,2004.
[8]陈粲.星载SAR地面目标回波模拟的RTPC与2DFFT算法对比[J].科学技术与工程,2011,26(11):6329-6336.CHEN Can.The comparison between space-borne ground target echo simulation algorithm RTPC and 2DFFT[J].Science Technology and Engineering,2011,26(11):6329-6336.
[9]FRANCESCHETTI G,MIGLIACCIO M,RICCIO D,et al.SARAS:a synthetic aperture radar(SAR)raw signal simulator[J].IEEE Transactions on Geoscience and Remote Sensing,1992,30(1):110-122.
[10]丁晨聪,孙清洋,舒汀.星载SAR欺骗式干扰信号的实时产生技术研究[J].现代雷达,2016,38(7):78-82.DING Chencong,SUN Qingyang,SHU Ting.Research on realtime generation technique of deceptive jamming signal for space-borne SAR[J].Modern Radar,2016,38(7):78-82.