基于能量补偿的时域干扰抵消改善方法
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摘要
针对时域干扰抵消方法产生的波束畸变和探测盲区问题,提出一种基于能量补偿的时域干扰抵消改善方法.该方法首先根据数据处理带宽和衰减曲线构造能量补偿因子;然后利用时域干扰抵消方法对线列阵拾取数据进行处理,得到相应波束;最后采用能量补偿因子对干扰抵消输出波束进行优化,可以减小波束畸变和探测盲区,达到预期的干扰抵消效果和探测效果.数值仿真和数据处理均表明,本文方法通过构造能量补偿因子改善了时域干扰抵消方法,降低了时域干扰抵消方法形成的"宽凹"或"凸"字型波束对目标探测性能的影响,实现了波束校正,减小了探测盲区,对原衰减区间内的目标实现了有效探测.从根本上解决了时域干扰抵消方法产生的波束畸变和探测盲区问题.
For the problem of beam distortion and detection blind zone by time domain interferences suppression method,a modified interferences suppression method by the energy compensation in time domain is proposed. Firstly, constructs energy compensation factor according to the frequency band of processing data and attenuation curve. Then,preprocesses the received data via time domain interferences suppression method, and obtains the output beam. Lastly,utilizes the energy compensation factor improve the output beam, reduces the beam distortion and detection blind zone, and achieves the expected results of interferences suppression and detection. The numerical simulation and data processing results show that,this method improves the time domain interferences suppression method by constructing energy compensation factor, reduces the impact of the"wide concave"or"convex"beam of time domain interferences suppression method on detecting target,achieves the beam correction, reduces detection blind zone, and achieves detecting the targets in old attenuation interval. That fundamentally solves the problem of beam distortion and detection blind zone by time domain interferences suppression method.
For the problem of beam distortion and detection blind zone by time domain interferences suppression method,a modified interferences suppression method by the energy compensation in time domain is proposed. Firstly, constructs energy compensation factor according to the frequency band of processing data and attenuation curve. Then,preprocesses the received data via time domain interferences suppression method, and obtains the output beam. Lastly,utilizes the energy compensation factor improve the output beam, reduces the beam distortion and detection blind zone, and achieves the expected results of interferences suppression and detection. The numerical simulation and data processing results show that,this method improves the time domain interferences suppression method by constructing energy compensation factor, reduces the impact of the"wide concave"or"convex"beam of time domain interferences suppression method on detecting target,achieves the beam correction, reduces detection blind zone, and achieves detecting the targets in old attenuation interval. That fundamentally solves the problem of beam distortion and detection blind zone by time domain interferences suppression method.
引文
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[13]高阳,许稼,贾鑫,等.自适应阵列抗干扰性能的解析定量分析[J].电波科学学报,2015,30(4):729-735.GAO Yang,XU Jia,JIA Xin,et al. Quantitative analysisvia analytic expressions for anti-jamming performance ofadaptive array[J]. Chinese Journal of Radio Science,2015,30(4):729-735.(in Chinese)
[14]高阳,许稼,龙腾.阻塞矩阵抗干扰方法性能分析[J].信号处理,2015,31(10):1361-1365.GAO Yang,XU Jia,LONG Teng. Performance analysis ofanti-jamming method via block matrix[J]. Journal of Sig-nal Processing,2015,31(10):1361-1365.(in Chinese)
[15]葛士斌,陈新华,孙长瑜.具有良好宽容性的逆波束形成干扰抑制算法研究[J].电子与信息学报,2015,37(2):380-385.GE Shi-bin,CHEN Xin-hua,SUN Chang-yu. The researchon the algorithm of inverse beamforming for interferencesuppression w ith good robust[J]. Journal of Electronics&Information Technology,2015,37(2):380-385.(in Chi-nese)
[16]葛士斌,余华兵,陈新华,等.基于协方差矩阵的干扰阻塞算法[J].科技导报,2015,33(19):78-83.GE Shi-bin,YU Hua-bing,CHEN Xin-hua,et al. Jammingjam method based on covariance matrix[J]. Science&Technology Review,2015,33(19):78-83.(in Chinese)
[2]YANG X P,ZHANG Z G,ZENG T,et al. Mainlobe interfer-ence suppression based on eigen-projection processing andcovariance matrix reconstruction[J]. IEEE Antennas andWireless Propagation Letters,2014,13(1):1369-1272.
[3]LU L J,LIAO Y P. Improved algorithm of mainlobe inter-ference suppression based on eigen-subspace[A]. 2016 In-ternational Conference on Communication and Signal Pro-cessing[C]. India:IEEE Press,2016. 133-137.
[4] YU S J,LEE J H. Efficient eigenspace-based array signalprocessing using multiple shift invariant subarrays[J]. An-tenna Propagation,1999,47(1):186-194.
[5]李荣峰,王永良,万山虎.一种在主瓣干扰条件下稳健的自适应波束形成方法[J].系统工程与电子技术,2002,24(7):61-64.LI Rong-feng,WANG Yong-liang,WAN Shan-hu. Robustadaptive beam forming under mainlobe interference condi-tions[J]. Systems Engineering and Electronics,2002,24(7):61-64.(in Chinese)
[6]李荣峰,王永良,万山虎.主瓣干扰下自适应方向图保形方法的研究[J].现代雷达,2002,24(3):50-53.LI Rong-feng,WANG Yong-liang,WAN Shan-hu. Re-search of reshaping adapted pattern under mainlobe interfer-ence conditions[J]. M odern Radar,2002,24(3):50-53.(in Chinese)
[7]苏保伟,王永良,李荣峰,等.阻塞矩阵方法对消主瓣干扰[J].系统工程与电子技术,2005,27(11):1830-1832.SU Bao-w ei,WANG Yong-liang,LI Rong-feng,et al.M ain-lobe interference cancelling method via block matrix[J]. Systems Engineering and Electronics,2005,27(11):1830-1832.(in Chinese)
[8]王纯,徐婷婷. Householder干扰阻塞法的弱信号DOA估[J].计算机工程与应用,2013,49(22):231-235.WANG Chun,XU Ting-ting. DOA estimation of w eak sig-nal based on Householder jamming jam method[J]. Com-puter Engineering and Applications,2013,49(22):231-235.(in Chinese)
[9]陈辉,苏海军.强干扰信号背景下的DOA估计新方法[J].电子学报,2006,34(3):530-534.CHEN Hui,SU Hai-jun. A new approach to estimate DOAin presence of strong jamming/signal suppression[J]. ActaElectronica Sinica,2006,34(3):530-534.(in Chinese)
[10]罗丁利,徐伟.一种阻塞矩阵的构建方法[J].火控雷达技术,2009,38(4):53-56.LUO Ding-li,XU Wei. Construction method of a blockmatrix[J]. Fire Control Radar Technology,2009,38(4):53-56.(in Chinese)
[11]李嶷,陈新华,孙长瑜,等.声纳中具方向性宽带强干扰的实时抑制方法[J].应用声学,2008,27(4):257-263.LI Yi,CHEN Xin-hua,SUN Chang-yu,et al. Real-timecancellation of directional w ideband interference in sonar[J]. Applied Acoustics,2008,27(4):257-263.(in Chi-nese)
[12]许稼,高阳,贾鑫,等.基于信干噪比增益的自适应阵列抗干扰性能分析[J].北京理工大学学报:自然科学版,2015,35(7):49-54.XU Jia,GAO Yang,JIA Xin,et al. Anti-jamming perform-ance analysis of adaptive array based on signal-to-interfer-ence-noise ratio gain[J]. Journal of Beijing Institute ofTechnology:Natural Sciences Edition,2015,35(7):49-54.(in Chinese)
[13]高阳,许稼,贾鑫,等.自适应阵列抗干扰性能的解析定量分析[J].电波科学学报,2015,30(4):729-735.GAO Yang,XU Jia,JIA Xin,et al. Quantitative analysisvia analytic expressions for anti-jamming performance ofadaptive array[J]. Chinese Journal of Radio Science,2015,30(4):729-735.(in Chinese)
[14]高阳,许稼,龙腾.阻塞矩阵抗干扰方法性能分析[J].信号处理,2015,31(10):1361-1365.GAO Yang,XU Jia,LONG Teng. Performance analysis ofanti-jamming method via block matrix[J]. Journal of Sig-nal Processing,2015,31(10):1361-1365.(in Chinese)
[15]葛士斌,陈新华,孙长瑜.具有良好宽容性的逆波束形成干扰抑制算法研究[J].电子与信息学报,2015,37(2):380-385.GE Shi-bin,CHEN Xin-hua,SUN Chang-yu. The researchon the algorithm of inverse beamforming for interferencesuppression w ith good robust[J]. Journal of Electronics&Information Technology,2015,37(2):380-385.(in Chi-nese)
[16]葛士斌,余华兵,陈新华,等.基于协方差矩阵的干扰阻塞算法[J].科技导报,2015,33(19):78-83.GE Shi-bin,YU Hua-bing,CHEN Xin-hua,et al. Jammingjam method based on covariance matrix[J]. Science&Technology Review,2015,33(19):78-83.(in Chinese)