The influence of signal downsampling on the SNR of retrieved phase in the φ-OTDR system

Xiaojun Liu; Fei Liu; Wenxiang Zhang; Jiahao Huo; Jinhui Yuan; Xian Zhou

doi:10.1364/OECC.2021.T3F.2

26th Optoelectronics and Communications Conference
OSA Technical Digest (Optica Publishing Group, 2021),
paper T3F.2
•https://doi.org/10.1364/OECC.2021.T3F.2

The influence of signal downsampling on the SNR of retrieved phase in the φ-OTDR system

Xiaojun Liu, Fei Liu, Wenxiang Zhang, Jiahao Huo, Jinhui Yuan, and Xian Zhou

Optoelectronics and Communications Conference 2021

Hong Kong China
3–7 July 2021
ISBN: 978-1-943580-92-7

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Signal Processing in Optical Sensing (T3F)

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X. Liu, F. Liu, W. Zhang, J. Huo, J. Yuan, and X. Zhou, "The influence of signal downsampling on the SNR of retrieved phase in the φ-OTDR system," in 26th Optoelectronics and Communications Conference, P. Alexander Wai, H. Tam, and C. Yu, eds., OSA Technical Digest (Optica Publishing Group, 2021), paper T3F.2.

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Abstract

Based on the Nyquist bandpass sampling theory, the linear relationship between the sampling rate and the signal-to-noise ratio (SNR) of the demodulation results is studied by simulation and experiment in the φ-OTDR system.

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