Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/626271
Title: A Fading-Discrimination Method for Distributed Vibration Sensor Using Coherent Detection of varphi -OTDR
Authors: Fufei Pang;Mengting He;Huanhuan Liu;Xuanwei Mei;Jiaming Tao;Tongzhi Zhang;Xiaobei Zhang;Na Chen;Tingyun Wang
subject: Rayleigh scattering|optical time domain reflectometry|Fiber optics sensors|phase measurement
Year: 2016
Publisher: IEEE
Abstract: We have proposed an effective method to discriminate the false alarm peaks induced by fading effect in distributed fiber-optic vibration sensing systems based on coherent heterodyne detection of phase-sensitive optical time-domain reflectometer (φ-OTDR). By comparison of the demodulated phase of backscattered light returned from the location of the sensing fiber before and behind the alarm peaks, the false alarm peaks can be distinguished from real vibration alarm peaks. We have demonstrated a fiber-optic distributed vibration sensor with efficient fading discrimination based on φ-OTDR system that has a measurement range of 2.5 km, a spatial resolution of 2.5 m, and a signal-to-noise ratio of 16 dB. The results provide a simple and low-cost approach for the false alarm discrimination in all-fiber φ-OTDR systems.
URI: http://localhost/handle/Hannan/162020
http://localhost/handle/Hannan/626271
ISSN: 1041-1135
1941-0174
volume: 28
issue: 23
Appears in Collections:2016

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Title: A Fading-Discrimination Method for Distributed Vibration Sensor Using Coherent Detection of varphi -OTDR
Authors: Fufei Pang;Mengting He;Huanhuan Liu;Xuanwei Mei;Jiaming Tao;Tongzhi Zhang;Xiaobei Zhang;Na Chen;Tingyun Wang
subject: Rayleigh scattering|optical time domain reflectometry|Fiber optics sensors|phase measurement
Year: 2016
Publisher: IEEE
Abstract: We have proposed an effective method to discriminate the false alarm peaks induced by fading effect in distributed fiber-optic vibration sensing systems based on coherent heterodyne detection of phase-sensitive optical time-domain reflectometer (φ-OTDR). By comparison of the demodulated phase of backscattered light returned from the location of the sensing fiber before and behind the alarm peaks, the false alarm peaks can be distinguished from real vibration alarm peaks. We have demonstrated a fiber-optic distributed vibration sensor with efficient fading discrimination based on φ-OTDR system that has a measurement range of 2.5 km, a spatial resolution of 2.5 m, and a signal-to-noise ratio of 16 dB. The results provide a simple and low-cost approach for the false alarm discrimination in all-fiber φ-OTDR systems.
URI: http://localhost/handle/Hannan/162020
http://localhost/handle/Hannan/626271
ISSN: 1041-1135
1941-0174
volume: 28
issue: 23
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7586068.pdf614.14 kBAdobe PDFThumbnail
Preview File
Title: A Fading-Discrimination Method for Distributed Vibration Sensor Using Coherent Detection of varphi -OTDR
Authors: Fufei Pang;Mengting He;Huanhuan Liu;Xuanwei Mei;Jiaming Tao;Tongzhi Zhang;Xiaobei Zhang;Na Chen;Tingyun Wang
subject: Rayleigh scattering|optical time domain reflectometry|Fiber optics sensors|phase measurement
Year: 2016
Publisher: IEEE
Abstract: We have proposed an effective method to discriminate the false alarm peaks induced by fading effect in distributed fiber-optic vibration sensing systems based on coherent heterodyne detection of phase-sensitive optical time-domain reflectometer (φ-OTDR). By comparison of the demodulated phase of backscattered light returned from the location of the sensing fiber before and behind the alarm peaks, the false alarm peaks can be distinguished from real vibration alarm peaks. We have demonstrated a fiber-optic distributed vibration sensor with efficient fading discrimination based on φ-OTDR system that has a measurement range of 2.5 km, a spatial resolution of 2.5 m, and a signal-to-noise ratio of 16 dB. The results provide a simple and low-cost approach for the false alarm discrimination in all-fiber φ-OTDR systems.
URI: http://localhost/handle/Hannan/162020
http://localhost/handle/Hannan/626271
ISSN: 1041-1135
1941-0174
volume: 28
issue: 23
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7586068.pdf614.14 kBAdobe PDFThumbnail
Preview File