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基于矢量阵的运动声源柱面聚焦定位方法试验研究
Experimental research on cylindrical focused beamforming localization method of moving sound sources based on vector sensor array
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摘要: 本文基于被动合成孔径原理，在建立运动声源矢量阵近场柱面聚焦测量模型的基础上，分别研究了适用于单频线谱信号和宽带连续谱信号的矢量阵柱面聚焦定位方法，通过数值仿真计算了该方法在多种误差条件下的定位精度，并进一步通过舱段模型试验对该方法的工程实用性和正确性进行了详细的分析和论证．舱段模型试验结果表明，柱面聚焦定位结果与壳体振动能量分布规律符合较好，该方法不仅能真实反映声源位置信息，而且能反映不同频带内声源能量分布的相对大小，具有良好的定位效果．Abstract: Based on the passive synthetic aperture principle, a new cylindrical focused beamforming localization method of moving sound sources based on vector sensor array suited for both narrowband and broadband signal is proposed in this paper. By establishing the measurement model of moving sound sources, calculating the localization accuracy versus error, and analyzing the experimental results of cabin model, the performance of this new method can be verified. A comparison between the focused beamforming localization results and the shell vibration measurement results proveds that the proposed method not only can obtain the localization results, but also can reflect the relative contribution of each coherent source,
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