一种双子阵本舰噪声抑制方法  

A Double Sub-array Ship-noise Suppression Algorithm

作　　者：李学敏 黄海宁[1] 李宇[1] 叶青华[1] 张扬帆[1] LI Xuemin;HUANG Haining;LI Yu;YE Qinghua;ZHANG Yangfan(Key Laboratory of Science and Technology on Advanced Underwater Acoustic Signal Processing,Institute of Acoustic,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Science,Beijing 100049,China)

机构地区：[1]中国科学院声学研究所先进水下信息技术重点实验室,北京100190 [2]中国科学院大学,北京100049

出　　处：《网络新媒体技术》2020年第4期41-45,64,共6页Network New Media Technology

基　　金：国防基础科研重大项目(编号:Y71Z151211)。

摘　　要：针对拖曳阵声纳接收的远程弱目标在本舰噪声强干扰条件下难以检测的问题,提出一种基于子阵的本舰噪声抑制算法,利用2个重叠子阵,分别估计子阵的波束输出,在子阵域设计加权实现干扰抑制。该算法抑制宽度可通过零陷加权矢量控制,并具有时间复杂度低,运算效率高的优点。计算机仿真和海试数据处理结果表明,算法能有效抑制本舰噪声,提高弱目标的检测性能,提升输出信干比约15 dB。A double sub-array ship noise suppression algorithm is proposed in this paper aiming at the problem that the distant-target received by tow array is difficult to detect under strong noise of ship.The effect of interference suppression can be obtained after suppression the interference in the beam-field with two overlapping sub-arrays.Wide-beam interference can be suppressed with controllable trap width.With the advantages of low time complexity and high computational efficiency,the algorithm proposed shows effectiveness in both simulation and sea experimental results and improves the ability of detection of weak targets about 15 dB.

关 键 词：水声信号处理 本舰噪声 宽波束 干扰抑制 

分 类 号：U666.7[交通运输工程—船舶及航道工程]