一种基于激光干涉原理的水声应答器系统设计  

Transponder System Based on Laser Interference Principle

作　　者：张文霞[1] 袁健[2] 

机构地区：[1]青岛理工大学琴岛学院,山东青岛266100 [2]山东省科学院海洋仪器仪表研究所,山东青岛266001

出　　处：《自动化博览》2016年第2期94-98,共5页Automation Panorama1

基　　金：山东省自然科学基金项目(ZR2012FL18);青岛科技发展计划项目(13-1-4-172-jch);山东省海洋生态环境与防灾减灾重点实验室开放课题(201308)

摘　　要：传统压电陶瓷接收式水声应答器存在非线性响应的缺陷,导致输入信号幅度与输出的信号幅度成非线性关系。本文基于光学干涉仪原理设计一种激光干涉接收式水声应答器。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;利用系统模块化设计理念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调节和改进。Since the conventional underwater acoustic transponder is made of piezoelectric ceramic with the nonlinear response, we designed a kind of hydro- acoustic transponder based on laser interferometer principle. It is based on the principle of laser interferometry to detect weak signals, avoiding the non-linear response of the inherent piezoelectric ceramics, with a linear t＇elation 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 using the modular concept and made an experiment to test the laser interference principle based transponder and adjusted the filter parameters to improve the transponder filter performance,

关 键 词：非线性响应 激光干涉原理 水声应答器 模块化设计方法 

分 类 号：TB565[交通运输工程—水声工程] TN24[理学—物理]