压差式矢量水听器驻波场校准实验研究  

Standing wave calibration of a gradient hydrophone

作　　者：吕文磊[1,2] 庞盟[3] 王利威[4] 张敏[4] 周宏朴[4] 廖延彪[4] 康崇 苑立波[2] 

机构地区：[1]91550部队92分队 [2]哈尔滨工程大学理学院 [3]香港理工大学电子工程系 [4]清华大学电子工程系光纤传感实验室

出　　处：《哈尔滨工程大学学报》2010年第8期1079-1086,共8页Journal of Harbin Engineering University

基　　金：哈尔滨市科技攻关计划基金资助项目(2005AA5CGO45)

摘　　要：压差式矢量水听器的校准一直是国内尚未解决的难题,针对此问题设计了一种基于光纤传感的压差式矢量水听器,对其传感原理进行了理论分析,为其设计了驻波场校准方案,对驻波场校准此类压差式矢量水听器进行了理论分析和计算机仿真,最后对此压差式矢量水听器进行了声压灵敏度和方向性的测试,实验结果与理论分析和计算机仿真比较吻合.这些研究对压差式矢量水听器的应用具有重要的意义.The finite difference between the pressure at two points in space is approximately equal to the gradient of acoustic pressure.This principle has been used to get vector information in an underwater acoustic field using a gradient hydrophone.However,calibration of vector hydrophones has long been an unsolvable problem,so a kind of fiber-optic gradient hydrophone was proposed.Its sensing principle was theoretically analyzed,and a means for standing wave calibration was designed.Then theoretical analysis and a computer simulation of standing wave calibration for a gradient hydrophone were carried out.Finally tests of the sensor＇s sensitivity-frequency curve and the ＂8＂ glyph directional diagram were carried out in a vector hydrophone calibration lab.The test results agreed well with both the theoretical analysis and the computer simulation.These studies should improve the range of applications for gradient hydrophones.

关 键 词：矢量水听器 压差式 驻波场 光纤传感 

分 类 号：TB565.1[交通运输工程—水声工程]