光纤水听器解调技术研究进展  

A Review of Demodulation Technology of Fiber Optic Hydrophone

作　　者：郭银景 王蕾 苏铭玥 宋亚琦 吕文红 GUO Yin-jing;WANG Lei;SU Ming-yue;SONG Ya-qi;LVWen-hong(College of Electronic and Information Engineering,Shandong University of Science and Technology,Qingdao 266590,China;College of Transportation,Shandong University of Science and Technology,Qingdao 266590,China;Qingdao Intelligent Ocean Technology Co.,Qingdao 266590,China)

机构地区：[1]山东科技大学电子信息工程学院,山东青岛266590 [2]山东科技大学交通学院,山东青岛266590 [3]青岛智海牧洋科技有限公司,山东青岛266590

出　　处：《光谱学与光谱分析》2022年第4期1017-1021,共5页Spectroscopy and Spectral Analysis

基　　金：船潜协同的海水养殖环境信息监测关键技术研究项目(2020-39);山东省重点研发计划(公益类专项)项目(2018GHY115022)资助。

摘　　要：光纤水听器是水声研究领域的关键技术,在实际应用中具有显著优势,广泛应用于AUV导航定位、资源勘探、海水警戒等场景。光纤水听器将声信号转化为光信号传播,在接收信号时就需要对光信号进行解调提取出声压信号。总结了几种常用的信号解调算法及关键技术,包括PGC解调法、 3×3耦合器解调法和外差解调法;介绍了各种解调算法的基本原理和改进技术;总结对比了各种算法的优缺点;最后给出了光纤水听器解调技术面临的挑战。Fiber-optic hydrophone is a key technology in underwater acoustic research and has significant advantages in practical application.It is widely used in AUV navigation and positioning,resource exploration,seawater warning and other scenarios.The optical fiber hydrophone transmits the sound signal into the light signal.The optical signal needs to be demodulated to extract the sound pressure signal when receiving the signal.Several common signal demodulation algorithms are summarized in this paper,including the PGC demodulation algorithm,3×3 coupler demodulation algorithm and heterodyne demodulation algorithm.Then,the basic principles and improved technology of various demodulation algorithms are described with a summary and comparison of their advantages and disadvantages.Finally,the challenges that the demodulation technology of fiber optic hydrophone faces have been put forward.

关 键 词：光纤水听器 PGC 3×3耦合器 外差解调 

分 类 号：TN247[电子电信—物理电子学]