Yu, Yifei, Luo, Linqing, Li, Bo, Soga, Kenichi and Yan, Jize (2017) Quadratic time-frequency transforms based Brillouin optical Time domain reflectometry. IEEE Sensors Journal, 17 (20). doi:10.1109/JSEN.2017.2736606 ISSN 1530-437X.

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Abstract

Linear and quadratic Time-Frequency (T-F) transforms are proposed for the signal processing of the Brillouin optical time-domain reflectometry, to improve the system performance, in terms of the transition responsivity and frequency resolution. Various T-F transforms, including linear T-F transform (short time Fourier transform) and quadratic transforms (Choi–Williams, Zhao-Atlas-Marks, smoothed pseudo Wigner–Ville, S-method, and adaptive spectrogram) are applied to the experimental backscattered time-domain spontaneous Brillouin signals. Multiple T-F approaches can be jointly applied to efficiently improve the time and frequency resolutions simultaneously. Results show that the SWPV transform provides the best transition responsivity and frequency resolution simultaneously among the six T-F transforms because of its smoothing operations on frequency and time axis for reducing the cross-term interference.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Journal or Publication Title:	IEEE Sensors Journal
Publisher:	Institute of Electrical and Electronic Engineers
ISSN:	1530-437X
Official Date:	October 2017
Dates:	Date Event October 2017 Published 29 August 2017 Available 22 July 2017 Accepted
Volume:	17
Number:	20
DOI:	10.1109/JSEN.2017.2736606
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access (Creative Commons)
Open Access Version:	Publisher

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