基于圆形活塞声源的椭圆形阵列的指向性研究

Research of Elliptical Array Directivity Based on Circular Piston Sound Source

构建了基于圆形活塞声源的椭圆形阵列,利用Bridge乘积定理计算了阵列的指向性表达式,采用控制变量法并利用Matlab软件对其指向性进行可视化和分析,得出了该阵列的指向性随阵元的数目、椭圆阵列的短半轴、长半轴、波数等参数的变化特点.为椭圆形阵列的设计提供了参考,有一定的实际意义.

An elliptical array based on circular piston sound source is constructed,Bridge product theorem is used to calculate the array directivity expression,by means of Matlab software to visualize its directivity,control variable method is used to analyze directivity characteristics,the directivity of the array varies with the number of elements, the long half axis,the short half axis,the wave number and so on. The method provides a reference for the design of the elliptical array,and has a certain practical significance.