矢量拖曳阵水听器流噪声探讨

拖曳阵声纳的左右舷模糊是实际应用中需要解决的问题。采用矢量水听器可以较好地解决此问题。采用波数．频率谱方法讨论同振柱形矢量水听器的流噪声。根据圆柱套管外壁湍流边界层的特点和同振柱形矢量水听器的工作原理，导出矢量水听器的声压通道和振速通道的噪声功率谱。通过数值积分法估计了流噪声功率谱与护套尺寸、水听器尺寸和拖曳速度等参数的关系。针对同振柱形矢量水听器的特点，所得结果有实际参考价值。

Investigation of the flow-induced noise of vector hydrophone in towed array

The ＇left/right ambiguity＇ problem inherent in traditional towed array sonar must be solved in practical application. Using vector hydrophones in towed array can solve the problem. A method in the wavenumber-frequency field spectrum is applied to discussing the flow noise of resonant-column type vector hydrophone. Acoustic pressure and velocity power spectrum of flow noise are calculated for a single vector hydrophone according to flow noise sound field expression in the interior fluid of vector towed array and the working theory of two-dimensional resonant-column type vector hydrophone. The relations between power spectrum of flow noise and dimension of jacket, size of hydrophone and towed speed are estimated with numerical results. With the resonant-column vector hydrophone characteristics, the results shown in this paper are practically useful.