High SNR Φ-OTDR Based on Frequency and Wavelength Diversity With Differential Vector Aggregation Method

Phase-demodulated phase-sensitive time domain reflectometer (Φ-OTDR) has attracted much attention because of its linear relationship between the phase variation and the amplitude of the vibration. However, it suffers from limited signal-to-noise ratio (SNR) and signal fading, due to the inherent low...

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Veröffentlicht in:	IEEE photonics journal 2020-12, Vol.12 (6), p.1-12
Hauptverfasser:	Gu, Jinfeng, Lu, Bin, Yang, Junqi, Wang, Zhaoyong, Ye, Lei, Ye, Qing, Qu, Ronghui, Cai, Haiwen
Format:	Artikel
Sprache:	eng
Schlagworte:	Agglomeration Fiber optics sensors Frequency diversity Optical fiber sensors Rayleigh backscattering Rayleigh scattering Reflectometers Reflectometry Refractivity Signal fading Signal to noise ratio SNR Time domain analysis Vibrations wavelength diversity Φ-OTDR
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