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针对常规基阵指向性图计算并未考虑阵元间互辐射阻抗影响这一不足,修正了常规基阵指向性图计算公式。将阵元间的互辐射阻抗引入到水声基阵的辐射声场计算中,并依据叠加原理得到包含阵元间互辐射阻抗的基阵指向性图计算修正公式。15元均匀线列阵和5×5均匀平面阵的计算机仿真和消声水池试验结果表明,该修正公式相比于常规公式更能反映基阵指向性图的真实情况。
In view of the lack of consideration of the influence of the mutual radiation impedance between the array elements and the calculation of the directivity map of the conventional array, the calculation formula of the directivity map of the conventional array is corrected. The mutual radiation impedance between the array elements is introduced into the acoustic field calculation of the underwater acoustic array, and the correction formula of the array directivity pattern including the mutual radiation impedance between the elements is obtained according to the superposition principle. Computer simulations and anechoic sink test results of a 15-element uniform linear array and a 5 × 5 uniform planar array show that this modified formula can better reflect the real situation of the directivity map of the array compared to conventional formulas.