阵列式双水听器平面扫描声强分布测量和声功率计算实验研究

根据双水听器法测量声强的基本原理，本文提出了基阵在湖中的布放及测量声强分布的实施步骤。通过对试验数据的处理与分析，给出了声强分布的三维力和等值曲线图，并利用扫描平面上的声强分布。计算出声源辐射的声功率。实验表明，本文提出的用列阵式双水听器声强测量系统，作平面扫描测量声强分布的方案是合理的；利用所测得的双平面近场声强分布来计算源的辐射也是可行的。

Experimental study of sound intensity distribution measurement and sound power calculation with a two-hydrophone probes linear array performing plane scanning

According to the basic priciple of the two-hydrophone probe method for mea suring sound intensity, this paper advances steps to arrange an linear array in a lake and with it to measure the sound intensity distribution. Through processing and analysing the experimental data, profiles of sound intensity as well as iso-intensity diagrams on the scanning planes are provided, and the sound power of the source is calculated by using thesound in tensity destribution in the scanning plane. Experimental results show that the proposed project in making use of linear array of two-hydrophone probes for plane scan ning and for measurement of sound intensity distribution is reasonable. The use of values of sound intensity distributions on two near field planes to calculate sound power of the source is also feasible.