DRFM间歇采样转发式干扰辨识算法研究
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摘要
基于数字射频存储器(DRFM:Digital Radio Frequency Memory)的间歇采样转发式干扰与雷达发射信号相参,可以获得部分脉压增益,同时具有压制与欺骗两种干扰效果,对现代雷达极具威胁。干扰辨识是进行有效干扰抑制的前提。本文提出一种滑动截断匹配滤波(STMF:Sliding-Truncation Matched Filter)方法,通过对匹配滤波器的参考窗宽度和延时进行二维搜索,输出脉压后的二维幅度分布;然后,基于该幅度分布对干扰切片宽度和转发周期进行估计;并通过分析切片宽度与转发周期之间的关系,实现典型转发式干扰的辨识。仿真结果显示该方法在干噪比(INR:Interference to Noise Ratio)大于5 dB时,正确辨识率不低于90%。
Digital radio frequency memory( DRFM) repeater jamming is coherent with the radar transmitting signal,thus can obtain partial pulse compression gain. The jamming can achieve effects of both deception and suppression,which makes it a big threaten to modern radar. Jamming recognition is the precondition of jamming suppression. Hence a jamming recognition method based on sliding-truncation matched filter( STMF) was proposed in this paper. With two dimensional search of time delay and window width of the matched filter,the amplitude distribution can be obtained. With this amplitude distribution,the jamming chip width and interleaving times can be estimated and then the jamming type can be recognized. The simulation results shows that when the interference to noise ratio is larger than 5 dB,recognition rate better than 90% with this method.
Digital radio frequency memory( DRFM) repeater jamming is coherent with the radar transmitting signal,thus can obtain partial pulse compression gain. The jamming can achieve effects of both deception and suppression,which makes it a big threaten to modern radar. Jamming recognition is the precondition of jamming suppression. Hence a jamming recognition method based on sliding-truncation matched filter( STMF) was proposed in this paper. With two dimensional search of time delay and window width of the matched filter,the amplitude distribution can be obtained. With this amplitude distribution,the jamming chip width and interleaving times can be estimated and then the jamming type can be recognized. The simulation results shows that when the interference to noise ratio is larger than 5 dB,recognition rate better than 90% with this method.
引文
[1]Schleher D Curtis.Electronic Warfare in the Information Age[M].Artech House,Boston,London,1999.
[2]刘玉山,许创杰.雷达对抗及反对抗[M].北京:电子工业出版社,1996.Liu Yushan,Xu Chuangjie.Radar ECM and ECCM[M].Beijing:Electronic Defense Industry Press,1996.(in Chinese)
[3]郭小一.多策略雷达干扰资源分配方法研究[D].长沙:国防科技大学硕士论文,2006.Guo Xiaoyi.Study on Methods of Radar Jamming Resource Assignment from Multi-Tactics[D].Changsha:National University of Defense Technology,2006.(in Chinese)
[4]王峰,雷志勇,陈庆.基于变换域时频切片的转发干扰认知算法[J].电波科学学报,2014,29(2):358-362.Wang Feng,Lei Zhiyong,Chen Qing.Repeat Jamming Cognition using Time-Frequency Chips in U Domain[J].Chinese Journal of Radio Science,2014,29(2):358-362.(in Chinese)
[5]Sparrow M J,Cakilo J.ECM Techniques to Counter Pulse Compression Radar[P].United States Patent,7081846,2006-07-25.
[6]刘忠.基于DRFM的线性调频脉冲压缩雷达干扰新技术[D].长沙:国防科技大学,2006.Liu Zhong.Jamming Technique for Countering LFM Pulse Compression Radar based on Digital Radio Frequency Memory[D].Changsha:National University of Defense Technology,2006.(in Chinese)
[7]田晓.雷达有源欺骗干扰综合感知方法研究[D].成都:电子科技大学,2013.Tian Xiao.Study on the Methods of Radar Active Deception Jamming Integrated Sensing[D].Chengdu:University of Electronic Science and Technology of China,2013.(in Chinese)
[8]陈方予,柯安琦,李明.DRFM产生的假目标与真实雷达目标回波差别分析[J].航天电子对抗,2008,24(6):41-44.Chen Fangyu,Ke Anqi,Li Ming.Analysis of the Difference between Real Target Radar Echo and Spurious Signals Generated by DRFM[J].Aerospace Electronic Warfare,2008,24(6):41-44.(in Chinese)
[9]Greco M,Gint F,Farina A.Radar Detection and Classification of Jamming Signals belonging to a Cone Class[J].IEEE Trans on Signal Processing,2008,56(5):1984-1993.
[10]Hill P C J,Truffert V.Statistical Processing Techniques for Detecting DRFM Repeat-Jam Radar Signals[C]∥IEE Colloquium on Signal Processing Techniques for Electronic Warfare,1992:1-6.
[11]蒋莹,何明浩,刘海波,等.基于频谱相像系数的间歇采样转发干扰识别[J].现代雷达,2016,38(5):72-77.Jiang Ying,He Minghao,Liu Haibo,et al.Recognition of Interrupted-sampling Repeater Jamming Based on Resemblance Coefficient[J].Modern Radar,2016,38(5):72-77.(in Chinese)
[12]蒋莹,何明浩,郁春来,等.基于熵理论的间歇采样转发干扰识别方法[J].现代防御技术,2016,44(3):104-109.Jiang Ying,He Minghao,Yu Chunlai,et al.Novel Method of Interrupted-Sampling Repeater Jamming Recognition Based on Entropy Theory[J].Modern Defence Technology,2016,44(3):104-109.(in Chinese)
[13]蒋莹,何明浩,郁春来,等.基于频域稀疏性的间歇采样转发干扰识别[J].空军预警学院学报,2015,29(5):318-321.Jiang Ying,He Minghao,Yu Chunlai,et al.Recognition of Interrupted-Sampling Repeater Jamming based on Sparsity in Frequency Domain[J].Journal of Air Force Early Warning Academy,2015,29(5):318-321.(in Chinese)
[14]蒋莹,何明浩,郁春来,等.基于盒维数的间歇采样转发干扰识别方法[J].现代防御技术,2016,44(2):157-164.Jiang Ying,He Minghao,Yu Chunlai,et al.Method of Interrupted-Sampling Repeater Jamming Recognition Based on Box Dimension[J].Modern Defence Technology,2016,44(2):157-164.(in Chinese)
[15]Zhou Chao,Shi Fuqiang,Liu Quanhua.Research on Parameters Estimation and Suppression for C&I Jamming[C]∥CIE International Conference on Radar 2016,Oct.2016:215-218.
[2]刘玉山,许创杰.雷达对抗及反对抗[M].北京:电子工业出版社,1996.Liu Yushan,Xu Chuangjie.Radar ECM and ECCM[M].Beijing:Electronic Defense Industry Press,1996.(in Chinese)
[3]郭小一.多策略雷达干扰资源分配方法研究[D].长沙:国防科技大学硕士论文,2006.Guo Xiaoyi.Study on Methods of Radar Jamming Resource Assignment from Multi-Tactics[D].Changsha:National University of Defense Technology,2006.(in Chinese)
[4]王峰,雷志勇,陈庆.基于变换域时频切片的转发干扰认知算法[J].电波科学学报,2014,29(2):358-362.Wang Feng,Lei Zhiyong,Chen Qing.Repeat Jamming Cognition using Time-Frequency Chips in U Domain[J].Chinese Journal of Radio Science,2014,29(2):358-362.(in Chinese)
[5]Sparrow M J,Cakilo J.ECM Techniques to Counter Pulse Compression Radar[P].United States Patent,7081846,2006-07-25.
[6]刘忠.基于DRFM的线性调频脉冲压缩雷达干扰新技术[D].长沙:国防科技大学,2006.Liu Zhong.Jamming Technique for Countering LFM Pulse Compression Radar based on Digital Radio Frequency Memory[D].Changsha:National University of Defense Technology,2006.(in Chinese)
[7]田晓.雷达有源欺骗干扰综合感知方法研究[D].成都:电子科技大学,2013.Tian Xiao.Study on the Methods of Radar Active Deception Jamming Integrated Sensing[D].Chengdu:University of Electronic Science and Technology of China,2013.(in Chinese)
[8]陈方予,柯安琦,李明.DRFM产生的假目标与真实雷达目标回波差别分析[J].航天电子对抗,2008,24(6):41-44.Chen Fangyu,Ke Anqi,Li Ming.Analysis of the Difference between Real Target Radar Echo and Spurious Signals Generated by DRFM[J].Aerospace Electronic Warfare,2008,24(6):41-44.(in Chinese)
[9]Greco M,Gint F,Farina A.Radar Detection and Classification of Jamming Signals belonging to a Cone Class[J].IEEE Trans on Signal Processing,2008,56(5):1984-1993.
[10]Hill P C J,Truffert V.Statistical Processing Techniques for Detecting DRFM Repeat-Jam Radar Signals[C]∥IEE Colloquium on Signal Processing Techniques for Electronic Warfare,1992:1-6.
[11]蒋莹,何明浩,刘海波,等.基于频谱相像系数的间歇采样转发干扰识别[J].现代雷达,2016,38(5):72-77.Jiang Ying,He Minghao,Liu Haibo,et al.Recognition of Interrupted-sampling Repeater Jamming Based on Resemblance Coefficient[J].Modern Radar,2016,38(5):72-77.(in Chinese)
[12]蒋莹,何明浩,郁春来,等.基于熵理论的间歇采样转发干扰识别方法[J].现代防御技术,2016,44(3):104-109.Jiang Ying,He Minghao,Yu Chunlai,et al.Novel Method of Interrupted-Sampling Repeater Jamming Recognition Based on Entropy Theory[J].Modern Defence Technology,2016,44(3):104-109.(in Chinese)
[13]蒋莹,何明浩,郁春来,等.基于频域稀疏性的间歇采样转发干扰识别[J].空军预警学院学报,2015,29(5):318-321.Jiang Ying,He Minghao,Yu Chunlai,et al.Recognition of Interrupted-Sampling Repeater Jamming based on Sparsity in Frequency Domain[J].Journal of Air Force Early Warning Academy,2015,29(5):318-321.(in Chinese)
[14]蒋莹,何明浩,郁春来,等.基于盒维数的间歇采样转发干扰识别方法[J].现代防御技术,2016,44(2):157-164.Jiang Ying,He Minghao,Yu Chunlai,et al.Method of Interrupted-Sampling Repeater Jamming Recognition Based on Box Dimension[J].Modern Defence Technology,2016,44(2):157-164.(in Chinese)
[15]Zhou Chao,Shi Fuqiang,Liu Quanhua.Research on Parameters Estimation and Suppression for C&I Jamming[C]∥CIE International Conference on Radar 2016,Oct.2016:215-218.