基于Φ-OTDR的光纤分布式传感信号处理及应用  

Processing and Application of Fiber Optic Distributed Sensing Signal Based on Φ-OTDR

作　　者：吴慧娟[1] 刘欣雨 饶云江[1,2] Wu Huijuan;Liu Xinyu;Rao Yunjiang(Key Laboratory of Fiber Optic Sensing and Communication,Ministry of Education,University of Electronic Science and Technology of China,Chengdu,Sichuan 611731,China;Fiber Optic Sensing Research Center,Zhijiang Laboratory,Hangzhou,Zhejiang 310000,China)

机构地区：[1]电子科技大学光纤传感与通信教育部重点实验室,四川成都611731 [2]光纤传感研究中心之江实验室,浙江杭州310000

出　　处：《激光与光电子学进展》2021年第13期31-51,共21页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61301275,61290312,41527805);教育部长江学者和创新团队发展计划(IRT1218);高等学校学科创新引智计划(111计划)(B14039)。

摘　　要：基于相位敏感光时域反射(Φ-OTDR)原理的光纤分布式振动/声传感(DVS/DAS)技术在国家基础设施及城市安全监测中发挥着重要作用,但受城区强噪声背景、多源干扰及未知地埋条件的影响,DVS/DAS对目标事件检测识别的准确率成为制约其规模及应用的最大技术瓶颈。因此,在电子科技大学光纤光学研究中心对DVS/DAS硬件技术研究的基础上,分析了目前光纤DVS/DAS信号处理的难点问题,回顾了近年来DVS/DAS信噪分离、基于机器学习模型的多维信号检测识别算法的研究进展及重要应用案例,并对DVS/DAS信号处理的发展方向及趋势进行了展望。Fiber optic distributed vibration/acoustic sensing(DVS/DAS) technology based on the principle of phasesensitive optical time-domain reflectometry(Φ-OTDR) plays an important role in the national infrastructure and urban safety monitoring. However, due to the influence of strong noise background, multi-source interference and unknown buried conditions in urban areas, the accuracy of DVS/DAS detection and recognition of target has become the biggest technical bottleneck restricting its scale application. Therefore, on the basis of DVS/DAS hardware technology research at the Fiber Optics Research Center of University of Electronic Science and Technology of China, this paper analyzes the difficult problems of the current optical fiber DVS/DAS signal processing, reviews the research progress and important application cases of DVS/DAS signal-to-noise separation, multi-dimensional signal detection and recognition algorithms based on machine learning models in recent years, and the development direction and trend of DVS/DAS signal processing are prospected.

关 键 词：测量与计量 相位敏感光时域反射 光纤传感 信号处理 安全监测 

分 类 号：TH74[机械工程—光学工程]