单个二阶组合水听器的性能分析

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (18) : 120-125.

论文

单个二阶组合水听器的性能分析

王绪虎1, 2 ，陈建峰2，韩晶 2 ，张群飞2

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Performance Analysis for Single Acoustic Dyadic Sensor

Wang Xu-Hu 1, 2 Chen Jian-Feng 2 Han Jing 2 Zhang Qun-Fei 2

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摘要

对二阶组合水听器在各向同性噪声场中的工作性能进行了分析。推导了各向同性噪声场中二阶组合水听器输出的自协方差矩阵，分析了两种基于单个二阶组合水听器的波束形成方法，在此基础上推导了二阶组合水听器两种波束形成方法的处理增益公式。仿真结果表明，二阶组合水听器在小孔径下具有更好的指向性和更大的处理增益，它的常规波束形成器处理增益分布在5.23dB-6.12dB之间；它的MVDR波束形成器的处理增益在在9.54dB上下浮动，最大值约为10.8dB。

Abstract

The performance of single acoustic dyadic sensor (ADS) in the isotropic noise field is analyzed in the paper. The covariance matrix of the ADS outputs in the isotropic noise field is deduced and two beamforming methods based on single ADS are analyzed. On the basis of these analyses, the formulas of the processing gain of two beamformers are derived. The simulation results indicate that the ADS have better directivity and bigger processing gain with small package. The processing gain of conventional beamformer (CBF) based on single ADS is between 5.23dB and 6.12dB, and that of the minimum variance distortionless response (MVDR) beamformer based on single ADS is about 9.54 dB and its maximum is 10.8dB.

导出引用

王绪虎;;陈建峰;韩晶 ;张群飞. 单个二阶组合水听器的性能分析[J]. 振动与冲击, 2014, 33(18): 120-125

Wang Xu-Hu; Chen Jian-Feng Han Jing Zhang Qun-Fei . Performance Analysis for Single Acoustic Dyadic Sensor[J]. Journal of Vibration and Shock, 2014, 33(18): 120-125