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本文围绕粘贴黏弹性吸声材料方法对水下小平台上安装矢量传感器的指向性和测向的影响展开理论分析和实验研究.首先建立了吸声材料和平台结构组成的复合层结构的数学模型,对声波经过复合层结构的声学特性进行了分析,在此基础上利用有限元耦合边界元法对粘贴吸声材料前后的水下小平台上的矢量传感器的声学特性进行研究.通过理论计算和数值分析研究了吸声材料对矢量传感器的各通道的指向性的影响,并计算了覆盖吸声材料前后矢量传感器的测向精度.水池实验验证了分析结果的正确性.
This paper focuses on the theoretical analysis and experimental research on the influence of the viscoelastic sound-absorbing material method on the directivity and the direction-finding of the sensor installed on the underwater platform.First, the mathematical model of the composite layer structure consisting of the sound-absorbing material and the platform structure is established , The acoustic characteristics of the sound waves passing through the composite layer structure are analyzed, and the acoustic characteristics of the vector sensor on the underwater small platform before and after attaching the sound absorption material are studied by using the finite element coupled boundary element method. By theoretical calculation and The influence of sound-absorbing materials on the directivity of each channel of vector sensor was studied numerically, and the accuracy of the vector sensor before and after covering the sound-absorbing material was calculated. The accuracy of the analysis was verified by a pool experiment.