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Matched field noise suppression: Principle with application to towed hydrophone line array

机译：匹配场噪声抑制：原理应用于拖曳水听器线阵列

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摘要

Discrete noise source suppression in underwater acoustic channel has attracted great attention in recent years. The paper proposes a new principle for dealing with the problem. This new principle is called matched field noise suppression (MFNS). Based on a previous work of the authors group, a full understanding about how a discrete noise source shows effects on the performance of a towed hydrophone line array has been obtained. In light of that finding, MFNS is proposed, which explores and utilizes the characteristics of the noise transmission channel to achieve much greater suppression of the noise in comparison with existing approaches. MFNS combines the concept of matched field processing (MFP) and optimal sensor array processing (OSAP) together to suppress the discrete noise source and to maintain an optimal beam for receiving far-field wanted plane wave signals. A MFNS beam-former is deduced in constraint with signal plane-wave response being unit and noise matched field response being zero. A closed-form solution of the weight vector for the beam-former is given. Computer simulation results agree well to the theoretical analysis.
机译：近年来，水下声通道中的离散噪声源抑制已引起广泛关注。本文提出了解决该问题的新原则。这种新原理称为匹配场噪声抑制（MFNS）。基于作者小组的先前工作，已经获得了有关离散噪声源如何显示对拖曳水听器线阵列性能的影响的完整理解。根据这一发现，提出了MFNS，它与现有方法相比，探索并利用了噪声传输通道的特性来实现对噪声的更大抑制。 MFNS将匹配场处理（MFP）和最佳传感器阵列处理（OSAP）的概念结合在一起，以抑制离散噪声源并维持用于接收远场有用平面波信号的最佳波束。在信号平面波响应为单位，噪声匹配场响应为零的约束下，推导了MFNS波束形成器。给出了波束形成器权重向量的封闭形式解。计算机仿真结果与理论分析吻合良好。

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