Chinese Optics, Volume. 18, Issue 2, 287(2025)
Improvement of signal-to-noise ratio for phase-sensitive optical time-domain reflecting system
Fig. 2. Original OTDR traces. (a) No vibration event loaded; (b) loading vibration events
Fig. 3. Differential traces in the absence of vibration events. (a) Difference traces; (b) peak trace
Fig. 5. Differential peak traces obtained by different algorithms in the absence of vibration events. (a) Original trace; (b) cumulative average algorithm; (c) moving average algorithm; (d) S-G smoothing algorithm
Fig. 6. OTDR traces processed by different algorithms. (a) Original traces; (b) cumulative average algorithm; (c) moving average algorithm; (d) S-G smoothing algorithm
Fig. 7. Different algorithms for normalized threshold localization. (a) Original trace; (b) cumulative average algorithm; (c) moving average algorithm; (d) S-G smoothing algorithm
Fig. 8. Signal to noise ratio of different algorithms. (a) Original trace; (b) cumulative average algorithm; (c) moving average algorithm; (d) S-G smoothing algorithm
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Zi-hao WANG, Zhi-kai LIU, Yu-xiang FENG, Cheng-long ZHANG, Li-dong LV. Improvement of signal-to-noise ratio for phase-sensitive optical time-domain reflecting system[J]. Chinese Optics, 2025, 18(2): 287
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Received: Jul. 2, 2024
Accepted: Oct. 9, 2024
Published Online: May. 19, 2025
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