基于亥姆霍兹方程最小二乘法的运动声源识别研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (4) : 13-17.

论文

基于亥姆霍兹方程最小二乘法的运动声源识别研究

杨德森 ;郭小霞 ;时胜国; 胡博

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the Helmholtz equation Least squares method for moving sound source

Guo Xiao-xia; Yang De-sen; Shi Sheng-guo , Hu Bo

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摘要

为有效解决水下运动声源的噪声源识别问题，研究了基于移动框架技术（MFAH）和亥姆霍兹方程最小二乘法（HELS）的运动声源识别理论，建立了基于MFAH与HELS的组合声全息算法，并通过了水池实验验证。实验研究结果表明该组合算法能够对水下任意形状运动声源进行准确识别，能够获得较高的声源定位精度，并且适用的频率范围较宽；对于存在多个相干声源的复杂声场，仅要求阵列的全息测量面为重建面的1.3倍就能够较准确的识别定位噪声源，实现了用小测量面、快速识别定位运动噪声源，为进一步的工程应用提供了方便

Abstract

To effectively solve the underwater moving sound source of the noise source identification problem, the theory of Moving Sound Source Identification which is based on Mobile Framework Technology （MFAH）and the Helmholtz equation least squares (HELS) is investigated. Acoustic holography method based on MFAH and HELS is founded and experimental pond is verified. The experimental results show that the combination method can accurately identify underwater moving sound source .It can also obtain high source location accuracy and wide frequency range. When the complex sound field has Multiple coherent sound source, it only requires that the holographic array measurement of surface is 1.3 times more than the Surface reconstruction. Rapid identification about noise source localization movement which uses a small measuring surface is realized and it provides convenience for engineering applications

导出引用

杨德森;郭小霞;时胜国;胡博 . 基于亥姆霍兹方程最小二乘法的运动声源识别研究[J]. 振动与冲击, 2012, 31(4): 13-17

Guo Xiao-xia;Yang De-sen;Shi Sheng-guo;Hu Bo. the Helmholtz equation Least squares method for moving sound source[J]. Journal of Vibration and Shock, 2012, 31(4): 13-17