Open Access122km single-end phase-sensitive optical time domain reflectometer based on post signal processing method
Author(s) -
Muping Song,
Yixuan Wang,
Ge Chen,
Yuxin Zhang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1873/1/012025
Subject(s) - demodulation , fading , vibration , signal (programming language) , time domain , signal processing , computer science , polarization (electrochemistry) , noise (video) , acoustics , optics , physics , telecommunications , artificial intelligence , computer vision , channel (broadcasting) , radar , decoding methods , chemistry , image (mathematics) , programming language
Phase sensitive optical time domain reflectometer is able to detect vibration information. However, when it comes to ultra-long distance detection, the vibration signal is overwhelmed due to noise level and polarization fading. In this paper, a method is used to compensate noise and fading phenomenon based on post signal processing scheme, including sectional amplification, amplitude demodulation and adaptive matched filtering. On the basis of the theoretical analyzation of the detection method, the feasibility is verified by experiment. Vibration information from 122km can be detected.