基于Matlab的基阵方向性仿真研究

Research on Simulation of Array Directivity Based on Matlab

根据水声传播和换能器基阵理论 ,建立了任意几何分布的基阵方向性的数学模型。借助于Matlab软件 ,研究了基阵三维方向性图的精细表示方法 ,对不同坐标网格表现的基阵方向性图进行了对比分析。通过分解三维方向性图得到了任意定向平面上及轴向等开角的方向性仿真曲线图。应用表明 ,结论对于基阵方向性的仿真与设计具有一定实用价值和指导意义。

In accordance with the theory of underwater acoustic spread and circular piston transducer array, the mathematical model for the directivity of array in which the units are distributed in various manners is created. By means of Matlab, the accurate expression method for the figure of array directivity in 3D coordinates is studied, and the characteristic and difference of these methods in various coordinate mesh are analyzed. By disintegrating the figure of directivity in spherical coordinate mesh, the simulation curve of directivity in the directivity-determined plane and with equal angle to the axis is obtained. It is shown by the application that, to a certain extent, the conclusion has practical value and guide meaning for the directivity simulation and design of the array.