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Time and frequency localized pulse shape for resolution enhancement in STFT-BOTDR
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Luo, Linqing, Li, Bo, Yu, Yifei, Xu, Xiaomin, Soga, Kenichi and Yan, Jize (2016) Time and frequency localized pulse shape for resolution enhancement in STFT-BOTDR. Journal of Sensors, 2016 . 3204130. doi:10.1155/2016/3204130 ISSN 1687-7268.
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WRAP-time-frequency-localized-pulse-shape-resolution-enhancement-STFT-BOTDR-Yu-2016.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (4Mb) | Preview |
Official URL: http://dx.doi.org/10.1155/2016/3204130
Abstract
Short-Time Fourier Transform-Brillouin Optical Time-Domain Reflectometry (STFT-BOTDR) implements STFT over the full frequency spectrum to measure the distributed temperature and strain along the optic fiber, providing new research advances in dynamic distributed sensing. The spatial and frequency resolution of the dynamic sensing are limited by the Signal to Noise Ratio (SNR) and the Time-Frequency (T-F) localization of the input pulse shape. T-F localization is fundamentally important for the communication system, which suppresses interchannel interference (ICI) and intersymbol interference (ISI) to improve the transmission quality in multicarrier modulation (MCM). This paper demonstrates that the T-F localized input pulse shape can enhance the SNR and the spatial and frequency resolution in STFT-BOTDR. Simulation and experiments of T-F localized different pulses shapes are conducted to compare the limitation of the system resolution. The result indicates that rectangular pulse should be selected to optimize the spatial resolution and Lorentzian pulse could be chosen to optimize the frequency resolution, while Gaussian shape pulse can be used in general applications for its balanced performance in both spatial and frequency resolution. Meanwhile, T-F localization is proved to be useful in the pulse shape selection for system resolution optimization.
| Item Type: | Journal Article | ||||||||||||
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| Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||||
| Library of Congress Subject Headings (LCSH): | Fiber optics, Brillouin scattering, Optical fiber detectors, Frequency spectra, Fourier transformations, Macromolecules, Strains and stresses -- Measurement | ||||||||||||
| Journal or Publication Title: | Journal of Sensors | ||||||||||||
| Publisher: | Hindawi | ||||||||||||
| ISSN: | 1687-7268 | ||||||||||||
| Official Date: | 27 January 2016 | ||||||||||||
| Dates: |
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| Volume: | 2016 | ||||||||||||
| Article Number: | 3204130 | ||||||||||||
| DOI: | 10.1155/2016/3204130 | ||||||||||||
| Status: | Peer Reviewed | ||||||||||||
| Publication Status: | Published | ||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
| Date of first compliant deposit: | 29 July 2021 | ||||||||||||
| Date of first compliant Open Access: | 29 July 2021 | ||||||||||||
| RIOXX Funder/Project Grant: |
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