Hull-mounted acoustic vector-sensor processing

M. Hawkes, A. Neharai
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引用次数: 11

Abstract

We consider the direction-of-arrival (DOA) estimation problem using arrays of acoustic vector-sensors located at a solid-liquid boundary. We formulate a measurement model and derive an expression for the Cramer-Rao bound (CRB) of a single source. The CRB is used to analyse the case of rigid and pressure-release surfaces in detail and comparison is made with pressure-sensor arrays. In particular, we show that a pressure-sensor array needs to be somewhat less than a quarter wavelength from a pressure-release surface to have comparable performance to an array of velocity sensors mounted at the surface.
船体安装声矢量传感器处理
我们考虑了利用位于固液边界的声矢量传感器阵列的到达方向(DOA)估计问题。我们建立了一个测量模型,并推导了单个源的Cramer-Rao界(CRB)的表达式。用CRB对刚性面和释放面进行了详细的分析,并与压力传感器阵列进行了比较。特别是,我们表明,压力传感器阵列需要距离压力释放表面不到四分之一波长,才能具有与安装在表面的速度传感器阵列相当的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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