[PDF][PDF] Advances in phase-sensitive optical time-domain reflectometry

S Liu, F Yu, R Hong, W Xu, L Shao… - Opto-Electronic …, 2022 - researching.cn
Phase-sensitive optical time-domain reflectometry (Φ-OTDR) has attracted numerous
attention due to its superior performance in detecting the weak perturbations along the fiber …

[HTML][HTML] Distributed acoustic sensing for monitoring linear infrastructures: Current status and trends

HH Zhu, W Liu, T Wang, JW Su, B Shi - Sensors, 2022 - mdpi.com
Linear infrastructures, such as railways, tunnels, and pipelines, play essential roles in
economic and social development worldwide. However, under the influence of geohazards …

[HTML][HTML] An event recognition method for Φ-OTDR sensing system based on deep learning

Y Shi, Y Wang, L Zhao, Z Fan - Sensors, 2019 - mdpi.com
Phase-sensitive optical time domain reflectometer (Φ-OTDR) based distributed optical fiber
sensing system has been widely used in many fields such as long range pipeline pre …

Fiber distributed acoustic sensing using convolutional long short-term memory network: a field test on high-speed railway intrusion detection

Z Li, J Zhang, M Wang, Y Zhong, F Peng - Optics express, 2020 - opg.optica.org
This paper presents a novel and general distributed acoustic sensing (DAS) signal
recognition framework aimed at real-time detection and classification of intrusion in the …

Applications of machine learning in pipeline integrity management: A state-of-the-art review

A Rachman, T Zhang, RMC Ratnayake - International journal of pressure …, 2021 - Elsevier
Despite being considered the safest means to transport oil and gas, pipelines are
susceptible to degradation. Pipeline integrity management (PIM) is implemented to lower the …

Machine learning methods for identification and classification of events in -OTDR systems: a review

DF Kandamali, X Cao, M Tian, Z **, H Dong, K Yu - Applied optics, 2022 - opg.optica.org
The phase sensitive optical time-domain reflectometer (φ-OTDR), or in some applications
called distributed acoustic sensing (DAS), has been a popularly used technology for long …

Pattern recognition for distributed optical fiber vibration sensing: A review

J Li, Y Wang, P Wang, Q Bai, Y Gao… - IEEE Sensors …, 2021 - ieeexplore.ieee.org
In recent years, pattern recognition technologies for distributed optical fiber vibration sensing
have attracted more and more attention, aiming to intelligently recognize vibration events …

Drone detection and localization using enhanced fiber-optic acoustic sensor and distributed acoustic sensing technology

J Fang, Y Li, PN Ji, T Wang - Journal of Lightwave Technology, 2022 - ieeexplore.ieee.org
In recent years, the widespread use of drones has led to serious concerns about safety and
privacy. Drone detection using microphone arrays has proven to be a promising method …

Distributed optical fiber intrusion detection by image encoding and SwinT in multi-interference environment of long-distance pipeline

C Zhu, Y Pu, K Yang, Q Yang… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
External intrusion incidents pose a severe threat to pipeline security in energy
transportation. In response to this, distributed optical fiber sensing technology has been …

A dynamic time sequence recognition and knowledge mining method based on the hidden Markov models (HMMs) for pipeline safety monitoring with Φ-OTDR

H Wu, X Liu, Y **ao, Y Rao - Journal of Lightwave Technology, 2019 - opg.optica.org
With the rapid development and extensive applications of phase-sensitive optical time-
domain reflectometry to long distance pipeline safety monitoring, it is still challenging to find …