一种水声应答器系统设计与实现

Design on Underwater Acoustics Transponder System

基于光学干涉仪原理设计一种水声应答器的接收部分,其利用激光干涉方法接收并检测微弱的水声信号,检测的水声信号幅度与输出的信号大小成线性关系,避免了压电陶瓷固有的非线性响应;设计了应答器系统前端信号接收及预处理模块、信号处理模块和脉冲回发模块,对应答器系统进行了收发测试,并针对系统调试中出现的问题进行了系统参数优化和改进。

We designed a kind of hydroacoustic transponder based on laser interferometer principle. It is based on the principle of laser interferometry to detect weak signals, avoiding the non-linear response ofthe inherent piezoelectric ceramics, with a linear relation between the detected acoustic signal and its output signal; we designed the front-end module named signal receiving,pre-processing module, signal processing module and the back-pulse module and made an experiment to test the laser interference principle based transponder and adjusted the filter paremeters to improve the transponder filter performance.