光通信技术2024，Vol.48Issue(6)：61-67,7.DOI:10.13921/j.cnki.issn1002-5561.2024.06.012
基于小波包降噪与特征投影的Φ-OTDR振动定位
Vibration localization based on wavelet packet denoising and feature projection for Φ-OTDR
彭怀敏 1陈宏滨 2陈平 3张超 3孙榕 3蒋贺雷4
作者信息
- 1. 桂林电子科技大学信息与通信学院,广西桂林 541004||中国电子科技集团公司第三十四研究所,广西桂林 541004
- 2. 桂林电子科技大学信息与通信学院,广西桂林 541004
- 3. 中国电子科技集团公司第三十四研究所,广西桂林 541004
- 4. 75841部队,长沙
- 折叠
摘要
Abstract
To establish a database of communication optical cable length and geographical location,a vibration localization algo-rithm for phase-sensitive optical time-domain reflectometer(Φ-OTDR)based on wavelet packet denoising and feature projection is proposed.This algorithm uses Φ-OTDR for optical cable length positioning,effectively addressing the issue of interference sig-nals in actual optical cable lines.By decomposing signals with wavelet packets and applying threshold methods for denoising,specific wavelet packets are selected based on the frequency characteristics of tapping vibration signals,using their energy as fea-ture vectors for projection,which effectively demodulates vibration signals and suppresses interference.Test results show that compared to other algorithms,the proposed algorithm has lower complexity and superior performance,successfully applied to embedded devices,achieving precise tapping localization for 20 km of optical cable.关键词
相位敏感光时域反射仪/小波包分解/特征投影/资源清查Key words
phase-sensitive optical time-domain reflectometer/wavelet packet decomposition/feature projection/resource in-ventory分类
信息技术与安全科学引用本文复制引用
彭怀敏,陈宏滨,陈平,张超,孙榕,蒋贺雷..基于小波包降噪与特征投影的Φ-OTDR振动定位[J].光通信技术,2024,48(6):61-67,7.
