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http://hdl.handle.net/10397/80782
Title: | Nuisance alarm reduction : using a correlation-based algorithm above differential signals in direct detected phase-OTDR systems | Authors: | Adeel, M Shang, C Zhu, K Lu, C |
Issue Date: | 2019 | Source: | Optics express, 4 Mar. 2019, v. 27, no. 5, p. 7685-7698 | Abstract: | Significant research efforts have focused on techniques for alleviating the nuisance alarm rate (NAR) in the field of phi-OTDR pattern recognition systems. Unfortunately, ephemeral events were mostly neglected in previous research, and algorithms meant for improving classification accuracy were emphasized at the cost of acquiring a very large number of traces. This problem engendered an additional source of NAR in a specific class of events. The proposed solution uses a novel correlation based wrapper on top of differential signals that aims to filter out the effect of unnecessary phases in direct detected phi-OTDR systems. This technique avoids the use of irrelevant data in these differential signals by exploiting a better use of these unnecessary phases and provides a better intensity translation with fewer acquired traces as compared with contemporary techniques of extracting features. | Publisher: | Optical Society of America | Journal: | Optics express | EISSN: | 1094-4087 | DOI: | 10.1364/OE.27.007685 | Rights: | © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement (https://www.osapublishing.org/library/license_v1.cfm#VOR-OA) © 2019 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved. Journal © 2019 The following publication M. Adeel, C. Shang, K. Zhu, and C. Lu, "Nuisance alarm reduction: Using a correlation based algorithm above differential signals in direct detected phase-OTDR systems," Opt. Express 27, 7685-7698 (2019) is available at https://dx.doi.org/10.1364/OE.27.007685 |
Appears in Collections: | Journal/Magazine Article |
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Adeel_Nuisance_Reduction_Phase-OTDR.pdf | 3.46 MB | Adobe PDF | View/Open |
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