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Wavelet Denoising Method for Improving Detection Performance of Distributed Vibration Sensor

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3 Author(s)
Zengguang Qin ; Dept. of Phys., Univ. of Ottawa, Ottawa, ON, Canada ; Liang Chen ; Xiaoyi Bao

This letter proposed and demonstrated a wavelet technique to reduce the time domain noise to get submeter spatial resolution in the distributed vibration sensor based on phase optical time domain reflectometry. A new wavelet shrinkage approach allows the distributed vibration measurement of 20-Hz and 8-kHz events to be detected over 1-km sensing length with a 5-ns optical pulse, which is equivalent to 50-cm spatial resolution using the single-mode sensing fiber.

Published in:

Photonics Technology Letters, IEEE  (Volume:24 ,  Issue: 7 )

Date of Publication:

April1, 2012

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