电子学报 ›› 2014, Vol. 42 ›› Issue (3): 432-438.DOI: 10.3969/j.iss.0372-2012-2014.03.003

• 学术论文 • 上一篇    下一篇

基于远近场声传播特性的拖线阵声纳平台辐射噪声空域矩阵滤波技术

韩东1,2, 张海勇2, 黄海宁1, 李启虎1   

  1. 1. 中国科学院声学研究所, 北京 100190;
    2. 海军大连舰艇学院通信系, 辽宁大连 116018
  • 收稿日期:2012-12-26 修回日期:2013-05-14 出版日期:2014-03-25
    • 通讯作者:
    • 韩东
    • 作者简介:
    • 张海勇 男,1966年3月出生于辽宁省葫芦岛市.海军大连舰艇学院通信系教授,博士.主要研究方向为数字信号处理及其应用,在国内外刊物和会议发表学术论文100余篇,获军队科技进步二等奖2项、三等奖多项.E-mail:zhanghy_cn@aliyun.com
    • 基金资助:
    • 国家自然科学基金 (No.60532040,No.11374001); 海军大连航艇学院科研发展基金 (No.2009032)

Towed Line Array Sonar Platform Radiated Noise Spatial Matrix Filter Based on Far-Field and Near-Field Sound Propagation Characteristics

HAN Dong1,2, ZHANG Hai-yong2, HUANG Hai-ning1, LI Qi-hu1   

  1. 1. Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China;
    2. Department of Communication Engineering, Dalian Naval Academy, Dalian, Liaoning 116018, China
  • Received:2012-12-26 Revised:2013-05-14 Online:2014-03-25 Published:2014-03-25
    • Supported by:
    • National Natural Science Foundation of China (No.60532040, No.11374001); Research Development Fund of PLA Dalian Naval Academy (No.2009032)

摘要: 针对拖线阵声纳平台噪声构成近场强干扰影响声纳弱目标探测的问题,利用近场平台噪声的多途传播特性及远场目标信号的平面波传播特性,将匹配场定位技术和平面波目标方位估计技术结合,利用平台噪声到达接收阵的拷贝向量以及平面波方向向量共同设计具有强干扰抑制功能的空域矩阵滤波器,实现了近场平台噪声抑制.设计两种最优化问题,获得不同的噪声抑制效果,给出它们的最优解,验证了解的正确性,找出解之间的关联.解释了平台辐射噪声在阵列端首方位附近构成强干扰的原因,同时解释了空域矩阵滤波后存在探测盲区的原因.由仿真可知,空域矩阵滤波处理可获得更小的探测盲区,同时获得盲区外更高的探测能力.

关键词: 平台辐射噪声, 空域矩阵滤波, 矩阵滤波器, 匹配场处理, 波束形成, 干扰抑制, 噪声抵消, 拖线阵声纳

Abstract: The detection of far-field weak target is influenced by the strong near-field platform radiated noise interference in the towed line array sonar.The near-field sound is with multiple channel propagation,and the far-field sound is with plane wave propagation.By these propagation characteristics,the matched field processing technology and the direction of arrival estimation technology are combined together.The spatial matrix filters are designed by the near-filed platform noise copy vector and the far-field plane wave bearing vector.Two optimization programs are built to achieve different platform noise suppression effects.The optimal solutions are deduced directly and their relationships are established.In the bearing course,the strong interferences exist without filtering,and the blind areas exist after filtering by the spatial matrix filter.The reason is that there are relativities between the platform copy vector and the plane wave bearing vector.Simulations indicate that it can achieve less blind area and higher detection capability with spatial matrix filter processing.

Key words: platform radiated noise, spatial matrix filter, matrix filter, matched field processing, beamforming, interference suppression, noise cancellation, towed line array sonar

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