水声成像系统Doily阵列的设计研究

The study of Doily array Design for Underwater Acoustic Imagine System

对应用于潜水探测的超声成像系统进行了相关研究。该声纳设计的一个主要特征就是超声阵列的设计,应用了几何相移波束即Doily波束形成技术。使用Doily阵列设计,用于探测3-5m远的水中小型目标,工作频率1-6MHz,采用450阶1800个通道形成水平波束,阵元设计用1-3复合材料和PZT-5H材料采用电极分割方法制作。Doily阵提供多重波束控制能力大大减少了元件,简化了系统。

A design for an underwater acoustic imaging system that would be portable enough to be operated by a diver was developed utilizing the geometric phased beam or ＂doily＂ ＂ array concept. The doily array uses the physical location of the elements along with discrete phase shading in multiples of 90°to steer the beams as a function of frequency. In this application, about 450 vertical staves are formed to form horizontal beams. The system would operate in the 1 to 6 MHz frequency range and only require 1808 channels.