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Analysis of SNR for Acoustic Vector Sensor Linear Array in Volume and Surface-generated Noise Fields 被引量:3

体积噪声场和界面噪声场中声矢量传感器线阵阵增益分析(英文)
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摘要 Acoustic vector sensor consists of pressure and particle velocity sensors,which measure the three-dimensional acoustic particle velocity,as well as the pressure at one location at the same time.By preserving the amplitude and phase information of the pressure and particle velocity,they possess a number of advantages over traditional scalar sensors.Signal-to-noise ratio (SNR) gain (which is often called array gain) is one of such advantages and is always interested by all of us.But it is not unchangeable if the spatial correlation of the noise field varies.Much more important,it is difficult to be given if the noise becomes complex.In this paper,spatial correlation of the vector field of isotropic volume-noise and surface-generated noise has been introduced briefly.Based on the results,the combined SNR output of a vector linear array is investigated and the maximum gain is given in the specified noise.Computer simulation shows that the output of one array in the same noise is not the same in different gestures.And then we find the best gesture through SNR calculation and obtain the biggest gain,which has important meaning to guide how to deploy an array in practice.We also should use the array with respect to the characteristics of the real ambient noise,especially in anisotropic noise field.
出处 《Journal of Marine Science and Application》 2011年第1期98-104,共7页 船舶与海洋工程学报(英文版)
基金 Supported by the National Natural Science Foundation of China under Grant No.50909028
关键词 signal-to-noise ratio spatial correlation acoustic vector sensor linear array volume-noise model surface-generated noise model 声矢量传感器 信噪比分析 噪声环境 表面 线列阵 空间相关性 输出信噪比 计算机模拟
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