Fiber optic seismometer array based on time-division locking technique for subway intrusion detection

Wenzhu Huang; Wenzhu Huang; Wentao Zhang; Wentao Zhang; Wentao Zhang; Jiantao Huang; Yusong Shen; Yingbo Luo; Jinzhu Su; Xiaoqing He; Wenhui Huang; Fang Li; Fang Li

doi:10.1364/OFS.2020.Th2.5

Optical Fiber Sensors Conference 2020 Special Edition
OSA Technical Digest (Optica Publishing Group, 2020),
paper Th2.5
•https://doi.org/10.1364/OFS.2020.Th2.5

Fiber optic seismometer array based on time-division locking technique for subway intrusion detection

Wenzhu Huang, Wentao Zhang, Jiantao Huang, Yusong Shen, Yingbo Luo, Jinzhu Su, Xiaoqing He, Wenhui Huang, and Fang Li

Optical Fiber Sensors 2020

Washington, DC United States
8–12 June 2020
ISBN: 978-1-55752-307-5

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Environmental, Security, Defense, and Industrial Applications; Technology Commercialization and Standardization (Th2)

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W. Huang, W. Zhang, J. Huang, Y. Shen, Y. Luo, J. Su, X. He, W. Huang, and F. Li, "Fiber optic seismometer array based on time-division locking technique for subway intrusion detection," in Optical Fiber Sensors Conference 2020 Special Edition, G. Cranch, A. Wang, M. Digonnet, and P. Dragic, eds., OSA Technical Digest (Optica Publishing Group, 2020), paper Th2.5.

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Abstract

Fiber optic interferometric seismometer array is used for intrusion detection of geological drilling in subway tunnel. The results are given. The time-frequency characteristics of the recorded intrusion signals are analyzed and discussed.

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