一种自适应空域矩阵滤波器设计方法  

A Design Method of Adaptive Spatial Matrix Filter

作　　者：杨美娇 韩东[2] 刘丹[3] YANG Meijiao;HAN Dong;LIU Dan(Midshipmen Group Five,Dalian Naval Academy,Dalian 116018,China;Department of Information System,Dalian Naval Academy,Dalian 116018,China;31401 People’s Liberation Army of China,Dalian 116000,China)

机构地区：[1]海军大连舰艇学院学员五大队,辽宁大连116018 [2]海军大连舰艇学院信息系统系,辽宁大连116018 [3]中国人民解放军31401部队,辽宁大连116000

出　　处：《电声技术》2022年第2期25-28,共4页Audio Engineering

摘　　要：针对近场强干扰背景下拖曳线列阵声呐探测弱目标的问题,设计了一种自适应空域矩阵滤波器。该滤波器能够保证通带内的向量完全无失真通过,同时最小化滤波后线列阵的输出响应,从而达到抑制近场强干扰和噪声的目的。将滤波器的设计转化为最优化问题的求解,得到其数值解。仿真结果表明,该方法能在与目标信号不相干的强干扰方位自动形成零陷,验证了阻带内的强干扰和噪声能够被有效抑制。An adaptive spatial matrix filter is designed to solve the detection of weak target by towed linear array sonar under the background of near-field strong interferences.The filter can ensure that the pass-band vectors pass through completely without distortion and minimize the output response of the filtered line array.This can suppress near-field strong interferences and noise.The design of filter is transformed into the solution of the optimization problem,and its numerical solution can be obtained.The simulation results show that the method can automatically form a null in the strong interference azimuth which is irrelevant to the target signal.Furthermore,this verifies that the strong interferences and noise in the stopband can be effectively suppressed.

关 键 词：自适应空域矩阵滤波 线列阵 最优化问题 强干扰 相干 

分 类 号：O427[理学—声学]