中文摘要：

提出了一种可对双层媒质进行声聚焦的控制方法。通过预先设定目标区域内焦点处的声压,利用遗传算法求解相控阵的驱动向量。利用声场快速算法对12×12二维相控阵在双层生物媒质中的多焦点声场模式进行仿真。结果表明遗传算法能优化多焦点模式的声场增益,声强能最大限度地聚焦在目标区域内。

英文摘要：

A control method of ultrasound focused on the double biological tissue is described.By pre-defined target area sound pressure at the focus,driven vector phased array is solved by genetic algorithm.This fast algorithm of ultrasound field is used to simulate the multi-focus field pattern in the double biological tissue produced by two-dimensional phased array consisting of 12×12 elements. The results show genetic algorithm can optimize the multi-focus pattern gain of the ultrasound field,making the sound intensity maximize the concentration of the target volume.