Eliminating Phase Drift for Distributed Optical Fiber Acoustic Sensing System with Empirical Mode Decomposition
Abstract
:1. Introduction
2. Principle and Methods
2.1. The Experimental Set-Up of the Phase-Sensitive Optical Time-Domain Reflectometry (Ф-OTDR) System
2.2. The Generation Mechanism of Phase Drift
2.3. The Principle of Empirical Mode Decomposition (EMD)
3. Experiment Results and Discussions
3.1. Validation Experiments of Phase Drift and EMD Method
3.2. Phase Drift Elimination under Different Experiment Conditions
3.2.1. Phase Variation in Different Vibration Frequencies
3.2.2. Phase Variation in Different Vibration Intensities
3.2.3. Phase Variation in Low-Frequency Vibration at the Sub-Hz level
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Lv, Y.; Wang, P.; Wang, Y.; Liu, X.; Bai, Q.; Li, P.; Zhang, H.; Gao, Y.; Jin, B. Eliminating Phase Drift for Distributed Optical Fiber Acoustic Sensing System with Empirical Mode Decomposition. Sensors 2019, 19, 5392. https://doi.org/10.3390/s19245392
Lv Y, Wang P, Wang Y, Liu X, Bai Q, Li P, Zhang H, Gao Y, Jin B. Eliminating Phase Drift for Distributed Optical Fiber Acoustic Sensing System with Empirical Mode Decomposition. Sensors. 2019; 19(24):5392. https://doi.org/10.3390/s19245392
Chicago/Turabian StyleLv, Yuejuan, Pengfei Wang, Yu Wang, Xin Liu, Qing Bai, Peihong Li, Hongjuan Zhang, Yan Gao, and Baoquan Jin. 2019. "Eliminating Phase Drift for Distributed Optical Fiber Acoustic Sensing System with Empirical Mode Decomposition" Sensors 19, no. 24: 5392. https://doi.org/10.3390/s19245392
APA StyleLv, Y., Wang, P., Wang, Y., Liu, X., Bai, Q., Li, P., Zhang, H., Gao, Y., & Jin, B. (2019). Eliminating Phase Drift for Distributed Optical Fiber Acoustic Sensing System with Empirical Mode Decomposition. Sensors, 19(24), 5392. https://doi.org/10.3390/s19245392