矢量水听器阵列在分界面上的空间谱估计
Spatial Spectrum Estimation Using Vector Hydrophone Array in a Reflecting Boundary
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摘要: 矢量水听器通常由3个空间轴向垂直的振速水听器和1个声压水听器构成，可同时测量水声信号的振速和声压。为了了解复杂分界面上矢量水听器阵列的定向性能，根据分界面上平面波的反射模型，提出了改进的Bartlett和Capon空间谱，建立了统一框架，并且以绝对硬边界为例，对矢量水听器阵和声压水听器阵的定向性能进行了比较。仿真实验结果证明了该方法的正确性。Abstract: The vector hydrophone is composed of three spatially co-located but orthogonal oriented velocity hydrophone plus another co-located pressure hydrophone. To understand the performance of DOA estimation using vector hydrophone array in a reflecting boundary, based on the reflecting model of plan acoustic wave, the improved Bartlett and Capon spatial spectrum are presented, and then the general frame is set up. The ability of DOA estimation using vector hydrophone array is also compared with that of pressure hydrophone array in rigid boundary. Finally numerical experimentatal results show its validity.
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