谐振式高灵敏度矢量水听器设计

Design of resonant high sensitivity vector hydrophone

为了实现高灵敏度水声信号检测,设计了一种多模型级联谐振式矢量水听器。介绍了多传感机理模型,包括二阶振动系统模型、位移传递模型及弯曲振动模型。在此基础上,设计了多器件共用结构的矢量水听器,并制作了矢量水听器样品,对样品进行了声学性能测试,结果表明:矢量水听器可以获得较高的灵敏度,声压灵敏度可达到-196 dB(100 Hz)。设计的水听器具有结构简单、稳定、可靠、低频以及高灵敏度声信号检测的特点,可实现水声探测、水下目标精确定向及导航等任务。

In order to realize detection of high sensitivity underwater acoustic signal,a multi-model cascade resonant vector hydrophone is designed. Multi-sensing mechanism model,include two-order vibration system model and displacement transfer model and bending vibration models are introduced. On this basis,vector hydrophone shared structure with multi-devices is designed and sample is fabricated. Acoustic performance of the sample is tested. Test results show that acoustic pressure sensitivity of vector hydrophone can reach-196 dB（ 100 Hz）. The vector hydrophone can implement acoustic detection,underwater target accurate orientation and navigation because of its characters of simple structure,high stability,reliability,low frequency and high sensitivity.