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在考虑障板对水听器基阵影响的基础上,提出阵列流形获取的新方法,即阵列流形的边界元计算方法.首先将基阵障板视为一个散射体,然后通过计算散射体表面声场分布,求出基阵阵元位置处的声场响应,最后得到整个基阵的阵列流形.该方法可以获得与实验测量相吻合的阵列流形,避免了理想阵列模型失配的问题.对安装在半球形障板上的14元圆弧阵进行了仿真计算,并在消声水池进行了实验验证.仿真计算与实验结果表明,由于障板对水听器基阵的影响,阵元具有很强的指向性,导致理想阵列流形与实测阵列流形差异很大,利用本文方法可以获得与实测值相吻合的阵列流形.
Considering the influence of the baffle on the hydrophone array, a new method of array manifold acquisition is proposed, which is the computational method of the boundary element of array manifold. First, the array baffle is regarded as a scatterer, The acoustic field response at the position of the array element is obtained and the array manifold of the whole array is finally obtained.The array manifold can be obtained in accordance with the experimental measurement and the mismatch of the ideal array model can be avoided The 14-element circular arc array mounted on a hemispherical baffle was simulated and experimentally verified in a muffler basin.The results of simulation and experiments show that due to the influence of the baffle on the hydrophone array, Element has a strong directivity, resulting in a very different manifold between the ideal array manifold and the measured array manifold. Using this method, the array manifolds that match the measured values can be obtained.