{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,19]],"date-time":"2025-11-19T20:45:25Z","timestamp":1763585125300,"version":"build-2065373602"},"reference-count":41,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2022,12,27]],"date-time":"2022-12-27T00:00:00Z","timestamp":1672099200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"projects MACFIBER (Department of Information Engineering, University of Padova)","award":["232\/2016"],"award-info":[{"award-number":["232\/2016"]}]},{"name":"MIUR (\u201cDepartments of Excellence\u201d-law499","award":["232\/2016"],"award-info":[{"award-number":["232\/2016"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The paper reports a machine learning approach for estimating the phase in a distributed acoustic sensor implemented using optical frequency domain reflectometry, with enhanced robustness at the fading points. A neural network configuration was trained using a simulated set of optical signals that were modeled after the Rayleigh scattering pattern of a perturbed fiber. Firstly, the performance of the network was verified using another set of numerically generated scattering profiles to compare the achieved accuracy levels with the standard homodyne detection method. Then, the proposed method was tested on real experimental measurements, which indicated a detection improvement of at least 5.1 dB with respect to the standard approach.<\/jats:p>","DOI":"10.3390\/s23010262","type":"journal-article","created":{"date-parts":[[2022,12,27]],"date-time":"2022-12-27T04:35:43Z","timestamp":1672115743000},"page":"262","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Machine Learning Estimation of the Phase at the Fading Points of an OFDR-Based Distributed Sensor"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0430-9684","authenticated-orcid":false,"given":"Arman","family":"Aitkulov","sequence":"first","affiliation":[{"name":"Department of Information Engineering, University of Padova, Via G. Gradenigo 6\/B, 35131 Padova, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leonardo","family":"Marcon","sequence":"additional","affiliation":[{"name":"CERN\u2014European Organization for Nuclear Research, Esplanade des Particules 1, 1211 Meyrin, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alessandro","family":"Chiuso","sequence":"additional","affiliation":[{"name":"Department of Information Engineering, University of Padova, Via G. Gradenigo 6\/B, 35131 Padova, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7187-570X","authenticated-orcid":false,"given":"Luca","family":"Palmieri","sequence":"additional","affiliation":[{"name":"Department of Information Engineering, University of Padova, Via G. 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