一种新的被动水声探测盲自适应波束形成器  

A new blind adaptive beamformer applied to underwater passive acoustic detection

作　　者：范文涛[1] 章新华[2] 叶琼龙[2] 康春玉[2] 

机构地区：[1]海军大连舰艇学院研究生一队,大连116018 [2]海军大连舰艇学院信号与信息技术研究中心,大连116018

出　　处：《声学技术》2008年第5期662-666,共5页Technical Acoustics

摘　　要：提出了一种适合拖曳线列阵鱼雷自导系统的新的被动水声探测盲自适应波束形成器。介绍了该方法的设计思路和推导原理,然后通过计算机仿真验证了该方法的收敛性,并在不同信噪比、快拍数条件下与单独使用自适应MVDR波束形成器在角度估计方面做了对比,与单独使用盲源分离算法在源信号估计方面作了比较。最后证明该方法是一种稳健的、对信噪比变化不敏感的适合被动水声探测的新方法。A new algorithm named blind adaptive beamformer, which is used in towed linear array of torpedo, is proposed. In this paper, the theory of the new algorithm is introduced firstly. Then by using computer simulation the convergent time of the algorithm under different SNR and snaps is checked, and a contrast between the proposed algorithm and the MVDR beamformer in the aspect of target arriving angle is made. In addition a contrast between the proposed algorithm and the blind source separation algorithm in the aspect of estimated source is given. Computer simulation results demonstrate the good effectiveness of the proposed algorithra.

关 键 词：独立分量分析 盲源分离 盲波束形成器 被动声纳 

分 类 号：TN911.7[电子电信—通信与信息系统]