000150782 001__ 150782
000150782 005__ 20250214153851.0
000150782 0247_ $$2doi$$a10.5220/0007373700460051
000150782 0248_ $$2sideral$$a134155
000150782 037__ $$aART-2019-134155
000150782 041__ $$aeng
000150782 100__ $$0(orcid)0000-0001-5898-8777$$aPreciado, Javier
000150782 245__ $$aAmplitude vibration measurement by harmonic frequency analysis of a distributed acoustic sensor
000150782 260__ $$c2019
000150782 5203_ $$aDistributed acoustic sensors (DAS) based in coherent optical time-domain reflectometry (C-OTDR) provide a cost-effective solution for intrusion monitoring of large civil infrastructures like pipelines, railways or motorways. Although detection of events is well demonstrated, an estimation of the amplitude of these events is difficult to achieve. We propose a new method to recover the amplitude of the vibration from the conventional C-OTDR backscattered power traces. It is based on the FFT analysis of the DAS signals. Using a discrete accelerometer as a reference, we have calibrated the response of an optical fiber DAS using known stimuli. A correlation between the amplitude of the vibration and the ratios of the amplitudes of harmonics to the fundamental of the DAS signals is demonstrated. This analysis overcomes the main issues of the amplitude measurement, related to the interaction between the stimulus and the interference pattern.
000150782 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/DI-17-09169$$9info:eu-repo/grantAgreement/ES/MINECO/RTC-2016-5212-8
000150782 540__ $$9info:eu-repo/semantics/closedAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000150782 655_4 $$ainfo:eu-repo/semantics/conferenceObject$$vinfo:eu-repo/semantics/publishedVersion
000150782 700__ $$0(orcid)0000-0002-2660-5652$$aSanahuja, David$$uUniversidad de Zaragoza
000150782 700__ $$0(orcid)0000-0001-5608-8679$$aHeras, Carlos$$uUniversidad de Zaragoza
000150782 700__ $$0(orcid)0000-0002-2244-170X$$aSubías, Jesús$$uUniversidad de Zaragoza
000150782 700__ $$aHidalgo, Lucía$$uUniversidad de Zaragoza
000150782 700__ $$0(orcid)0000-0002-6144-7928$$aSalinas, Iñigo$$uUniversidad de Zaragoza
000150782 700__ $$0(orcid)0000-0002-4094-3826$$aSevillano, Pascual$$uUniversidad de Zaragoza
000150782 700__ $$aMartínez, Juan José
000150782 700__ $$aVillafranca, Asier
000150782 7102_ $$12002$$2385$$aUniversidad de Zaragoza$$bDpto. Física Aplicada$$cÁrea Física Aplicada
000150782 7102_ $$15008$$2800$$aUniversidad de Zaragoza$$bDpto. Ingeniería Electrón.Com.$$cÁrea Teoría Señal y Comunicac.
000150782 773__ $$g1, 7 (2019), 46-51$$tPhotoptics (Setúbal)$$x2184-352X
000150782 8564_ $$s760442$$uhttps://zaguan.unizar.es/record/150782/files/texto_completo.pdf$$yVersión publicada
000150782 8564_ $$s2355118$$uhttps://zaguan.unizar.es/record/150782/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000150782 909CO $$ooai:zaguan.unizar.es:150782$$particulos$$pdriver
000150782 951__ $$a2025-02-14-14:04:38
000150782 980__ $$aARTICLE