基于MEMS仿生矢量水听器的水声定向研究  

Research on underwater acoustic orientation based on MEMS bionic vector hydrophone

作　　者：陈桂英[1] 张国军[1] 刘林仙[1] 张文栋[1] 

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室电子测试技术重点实验室,山西太原030051

出　　处：《传感器与微系统》2013年第6期15-17,共3页Transducer and Microsystem Technologies

基　　金：国家"863"计划资助项目(2011AA040404)

摘　　要：MEMS矢量水听器不仅可以测量声压信号,还可以测量质点的振速信号,它具有与频率无关的偶极子自然指向性。单一的矢量水听器就能够测量水中的声压和质点振速。利用矢量水听器的这种特性,结合波束形成原理,采用数字信号处理(DSP)技术,设计了基于MEMS仿生矢量水听器的水声定向系统,并进行了实际测试,结果表明:该系统能很好地实现对目标360°方位的定向功能。MEMS vector hydrophone can not only measure sound pressure signal,but also particle velocity signal.It has nothing to do with the frequency of dipole natural directivity.Single vector hydrophone can measure sound pressure and particle velocity in the water.Using this characteristics,acoustic orientation system is designed based on MEMS bionic vector hydrophone combining with beam forming principle and DSP technology.Results of actual tests show that this system can realize orientation function of 360°direction for target.

关 键 词：MEMS矢量水听器 数字信号处理 波束形成 定向 

分 类 号：TB565.1[交通运输工程—水声工程]