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Aircraft Detection Using Phase-Sensitive Optical-Fiber OTDR

Aircraft detection plays a vital role in aviation management and safe operation in the aviation system. Phase-Sensitive Optical Time Domain Reflectometry (Φ-OTDR) technology is a prevailing sensing method in geophysics research, structure inspection, transportation detection, etc. Compared with exis...

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Detalles Bibliográficos
Autores principales: Cai, Yunpeng, Ma, Jihui, Yan, Wenfa, Zhang, Wenyi, An, Yuhang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8348773/
https://www.ncbi.nlm.nih.gov/pubmed/34372331
http://dx.doi.org/10.3390/s21155094
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author Cai, Yunpeng
Ma, Jihui
Yan, Wenfa
Zhang, Wenyi
An, Yuhang
author_facet Cai, Yunpeng
Ma, Jihui
Yan, Wenfa
Zhang, Wenyi
An, Yuhang
author_sort Cai, Yunpeng
collection PubMed
description Aircraft detection plays a vital role in aviation management and safe operation in the aviation system. Phase-Sensitive Optical Time Domain Reflectometry (Φ-OTDR) technology is a prevailing sensing method in geophysics research, structure inspection, transportation detection, etc. Compared with existing video- or radio-based detection methods, Φ-OTDR is cost-effective, suitable for long-distance detection, and resistant to severe weather conditions. We present a detection system using Φ-OTDR technology and analyze the character of the acoustic signal of aircraft. Instead of runway monitoring in the airport or noise detection in the air, this study focuses on the detection of seismic vibration signal excited by the sound of aircraft. The Chebyshev filter is adopted to eliminate the impact of background noise and random noise from the original vibration signal; the short-time Fourier transform is used for time-frequency analysis. The experimental results showed that the seismic vibration signal excited by the aircraft sound is mainly low-frequency, which is under 5 Hz. Time delay of aircraft vibration signal in different locations of the optic fiber is recorded by the sensing system. The Doppler effect is also revealed by the time-domain analysis: the frequency increases when the aircraft is approaching and decreases when the aircraft moves away.
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spelling pubmed-83487732021-08-08 Aircraft Detection Using Phase-Sensitive Optical-Fiber OTDR Cai, Yunpeng Ma, Jihui Yan, Wenfa Zhang, Wenyi An, Yuhang Sensors (Basel) Communication Aircraft detection plays a vital role in aviation management and safe operation in the aviation system. Phase-Sensitive Optical Time Domain Reflectometry (Φ-OTDR) technology is a prevailing sensing method in geophysics research, structure inspection, transportation detection, etc. Compared with existing video- or radio-based detection methods, Φ-OTDR is cost-effective, suitable for long-distance detection, and resistant to severe weather conditions. We present a detection system using Φ-OTDR technology and analyze the character of the acoustic signal of aircraft. Instead of runway monitoring in the airport or noise detection in the air, this study focuses on the detection of seismic vibration signal excited by the sound of aircraft. The Chebyshev filter is adopted to eliminate the impact of background noise and random noise from the original vibration signal; the short-time Fourier transform is used for time-frequency analysis. The experimental results showed that the seismic vibration signal excited by the aircraft sound is mainly low-frequency, which is under 5 Hz. Time delay of aircraft vibration signal in different locations of the optic fiber is recorded by the sensing system. The Doppler effect is also revealed by the time-domain analysis: the frequency increases when the aircraft is approaching and decreases when the aircraft moves away. MDPI 2021-07-28 /pmc/articles/PMC8348773/ /pubmed/34372331 http://dx.doi.org/10.3390/s21155094 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Cai, Yunpeng
Ma, Jihui
Yan, Wenfa
Zhang, Wenyi
An, Yuhang
Aircraft Detection Using Phase-Sensitive Optical-Fiber OTDR
title Aircraft Detection Using Phase-Sensitive Optical-Fiber OTDR
title_full Aircraft Detection Using Phase-Sensitive Optical-Fiber OTDR
title_fullStr Aircraft Detection Using Phase-Sensitive Optical-Fiber OTDR
title_full_unstemmed Aircraft Detection Using Phase-Sensitive Optical-Fiber OTDR
title_short Aircraft Detection Using Phase-Sensitive Optical-Fiber OTDR
title_sort aircraft detection using phase-sensitive optical-fiber otdr
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8348773/
https://www.ncbi.nlm.nih.gov/pubmed/34372331
http://dx.doi.org/10.3390/s21155094
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