Practical Performance Enhancement of DAS by Using Dense Multichannel Signal Integration

Zhaoyong Wang,Junqi Yang,Jinfeng Gu,Yifan Liu,Bin Lu,Kang Ying,Lei Ye,Qing Ye,Ronghui Qu,Haiwen Cai

Journal of Lightwave Technology（2021）

引用 6|浏览14

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摘要

Distributed fiber acoustic sensing (DAS) technology can measure acoustic waves along long-distance optical fiber with high spatial resolution. Due to its unique advantages, DAS has been applied in wide fields. However, DAS currently still suffers from limited sensitivity and severe signal fading. Due to the inherent random nature and low signal intensity of Rayleigh backscattering, it is a challen...

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关键词

Sensors,Signal to noise ratio,Sensitivity,Diversity reception,Optical fibers,Diversity methods,Spatial diversity

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