分布式光纤振动检测系统信号后处理算法研究

doi:10.3976/j.issn.1002-4026.2018.03.010

Abstract

Abstract:

For the problem that the phasesensitive distributed vibration detection system is susceptible to environmental noise in practical engineering applications, theoretical simulation and field test verification of the filtering algorithm were performed on the system signal. The results show that the highpass filtered differential and average processing of the original signal can effectively remove largescale, lowfrequency and periodic noise signals in the environment. The system signalnoise ratio is improved by 50% and the detection effect is enhanced.

Key words: vibration detection, signal filtering, distributed optical fiber sensing

CLC Number:

TP212

LI Chang, WANG Chen, SHANG Ying, ZHAO Wen-an, CAO Bing, HUANG Sheng, NI Jia-sheng, WANG Chang. Research on signal postprocessing algorithm of distributed optical fiber vibration detection system[J].SHANDONG SCIENCE, 2018, 31(3): 61-65.

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Open Access This article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0), which permits third parties to freely share (i.e., copy and redistribute the material in any medium or format) and adapt (i.e., remix, transform, or build upon the material) the articles published in this journal, provided that appropriate credit is given, a link to the license is provided, and any changes made are indicated. The material may not be used for commercial purposes. For details of the CC BY-NC 4.0 license, please visit: https://creativecommons.org/licenses/by-nc/4.0

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Research on signal postprocessing algorithm of distributed optical fiber vibration detection system

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