Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/107149
DC Field | Value | Language |
---|---|---|
dc.contributor | Photonics Research Centre | en_US |
dc.contributor | Department of Electrical and Electronic Engineering | en_US |
dc.creator | Shen, L | en_US |
dc.creator | Zhao, Z | en_US |
dc.creator | Zhao, C | en_US |
dc.creator | Wu, H | en_US |
dc.creator | Lu, C | en_US |
dc.creator | Tang, M | en_US |
dc.date.accessioned | 2024-06-13T01:04:12Z | - |
dc.date.available | 2024-06-13T01:04:12Z | - |
dc.identifier.issn | 0733-8724 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/107149 | - |
dc.language.iso | en | en_US |
dc.publisher | Institute of Electrical and Electronics Engineers | en_US |
dc.rights | © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | en_US |
dc.rights | The following publication L. Shen, Z. Zhao, C. Zhao, H. Wu, C. Lu and M. Tang, "Improving the Spatial Resolution of a BOTDA Sensor Using Deconvolution Algorithm," in Journal of Lightwave Technology, vol. 39, no. 7, pp. 2215-2222, 1 April 2021 is available at https://doi.org/10.1109/JLT.2020.3047504. | en_US |
dc.subject | Brillouin scattering | en_US |
dc.subject | Deconvolution | en_US |
dc.subject | Distributed optical fiber sensors | en_US |
dc.subject | Signal processing | en_US |
dc.title | Improving the spatial resolution of a BOTDA sensor using deconvolution algorithm | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 2215 | en_US |
dc.identifier.epage | 2222 | en_US |
dc.identifier.volume | 39 | en_US |
dc.identifier.issue | 7 | en_US |
dc.identifier.doi | 10.1109/JLT.2020.3047504 | en_US |
dcterms.abstract | Spatial resolution improvement from an acquired measurement using long pulse is developed for Brillouin optical time domain analysis (BOTDA) systems based on the total variation deconvolution algorithm. The frequency dependency of Brillouin gain temporal envelope is investigated by simulation, and its impact on the recovered results of deconvolution algorithm is thoroughly analyzed. To implement a reliable deconvolution process, differential pulse-width pair (DPP) technique is utilized to effectively eliminate the systematic Brillouin frequency shift (BFS) distortion stemming from the frequency dependency of temporal envelope. The width of the pulse pairs should be larger than 40 ns as is analyzed theoretically and verified experimentally. It has been demonstrated that the proposed method can realize flexible adjustment of spatial resolution with enhanced signal-to-noise ratio (SNR) from an established measurement with long pump pulse. In the experiment, the spatial resolution is increased to 0.5 m and 1 m with high measurement accuracy by using the deconvolution algorithm from the measurement of 60/40 ns DPP signals. Compared with the raw DPP results with the same spatial resolution, 7.9 dB and 5.9 dB SNR improvements are obtained for 0.5 m and 1 m spatial resolution respectively, thanks to the denoising capability of the total variation deconvolution algorithm. The impact of sampling rate on the recovery results is also studied. The proposed sensing system allows for distortion-free Brillouin distributed sensing with higher spatial resolution and enhanced SNR from the conventional DPP setup with long pulse pairs. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Journal of lightwave technology, 1 Apr. 2021, v. 39, no. 7, p. 2215-2222 | en_US |
dcterms.isPartOf | Journal of lightwave technology | en_US |
dcterms.issued | 2021-04-01 | - |
dc.identifier.scopus | 2-s2.0-85098763302 | - |
dc.identifier.eissn | 1558-2213 | en_US |
dc.description.validate | 202403 bckw | en_US |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | EIE-0256 | - |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | National Key R&D Program of China; National Natural Science Foundation of China; Innovation Fund of WNLO | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 43301697 | - |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
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Zhao_Improving_Spatial_Resolution.pdf | Pre-Published version | 1.45 MB | Adobe PDF | View/Open |
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