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中文摘要：
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。
英文摘要：
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,
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