基于时延补偿的宽带干扰源抑制算法研究  

Research on Broadband Interference Source Suppression Algorithm Based on Time Delay Compensation

作　　者：刘春静 张锦中[2] 马利祥 LIU Chunjing;ZHANG Jinzhong;MA Lixiang

机构地区：[1]安徽信息工程学院,安徽芜湖241000 [2]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《科技创新与应用》2019年第34期12-13,共2页Technology Innovation and Application

基　　金：安徽省自然科学研究重大项目(编号:KJ2019ZD79);安徽省科技厅重点研发项目(编号:201904a05020093)

摘　　要：宽带自适应波束形成在雷达工程、电子对抗、通信、麦克风阵列等很多领域都得到了广泛应用,尤其是针对宽带干扰源的抑制越来越重要。传统的基于自适应波束形成的宽带干扰源抑制算法都是通过频域变换后进行处理的,随着信号带宽的增大,算法的复杂度也越来越大。为了降低算法复杂度,研究了一种基于时延补偿的宽带干扰源抑制算法,以时延补偿的方式旋转阵列,将干扰源的入射角度调整到阵列法向方向,从而消除宽带信号的色散效应。计算机仿真表明,该算法能够取得较好的信干噪比改善效果。Wideband adaptive beamforming has been widely used in radar engineering,electronic countermeasures,communications,microphone arrays and many other fields.In particular,the suppression of wideband interference sources is becoming more and more important.The traditional wideband interference suppression algorithm based on adaptive beamforming is processed by frequency domain transformation.With the increase of signal bandwidth,the complexity of the algorithm is also increasing.In order to reduce the complexity of the algorithm,a wideband interference suppression algorithm based on time-delay compensation is studied.The array is rotated by time-delay compensation,and the incidence angle of the interference source is adjusted to the normal direction of the array,thus eliminating the dispersion effect of wideband signals.Computer simulation shows that the proposed algorithm can achieve better signal-to-interference-noise ratio(SINR)improvement.

关 键 词：时延补偿 宽带干扰 波束形成 

分 类 号：TN911.7[电子电信—通信与信息系统]