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dc.rights.licenseopenen_US
dc.contributor.authorZEIGER, Pierre
dc.contributor.authorFRAPPART, Frédéric
dc.contributor.authorDARROZES, José
dc.contributor.authorROUSSEL, Nicolas
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBONNETON, Philippe
IDREF: 059798823
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBONNETON, Natalie
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorDETANDT, Guillaume
dc.date.accessioned2024-03-04T10:57:31Z
dc.date.available2024-03-04T10:57:31Z
dc.date.issued2021-05-10
dc.identifier.issn2072-4292en_US
dc.identifier.urioai:crossref.org:10.3390/rs13091856
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/188553
dc.description.abstractEnSignal-to-noise ratio (SNR) time series acquired by a geodetic antenna were analyzed to retrieve water heights during asymmetric tides on a narrow river using the Interference Pattern Technique (IPT) from Global Navigation Satellite System Reflectometry (GNSS-R). The dynamic SNR method was selected because the elevation rate of the reflecting surface during rising tides is high in the Garonne River with macro tidal conditions. A new process was developed to filter out the noise introduced by the environmental conditions on the reflected signal due to the narrowness of the river compared to the size of the Fresnel areas, the presence of vegetation on the river banks, and the presence of boats causing multiple reflections. This process involved the removal of multipeaks in the Lomb-Scargle Periodogram (LSP) output and an iterative least square estimation (LSE) of the output heights. Evaluation of the results was performed against pressure-derived water heights. The best results were obtained using all GNSS bands (L1, L2, and L5) simultaneously: R = 0.99, ubRMSD = 0.31 m. We showed that the quality of the retrieved heights was consistent, whatever the vertical velocity of the reflecting surface, and was highly dependent on the number of satellites visible. The sampling period of our solution was 1 min with a 5-min moving window, and no tide models or fit were used in the inversion process. This highlights the potential of the dynamic SNR method to detect and monitor extreme events with GNSS-R, including those affecting inland waters such as flash floods.
dc.language.isoENen_US
dc.rightsAttribution 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/us/*
dc.sourcecrossref
dc.subject.enGNSS-R
dc.subject.enReflectometry
dc.subject.enDynamic SNR
dc.subject.enAsymmetric tides
dc.subject.enWater height
dc.title.enSNR-Based Water Height Retrieval in Rivers: Application to High Amplitude Asymmetric Tides in the Garonne River
dc.typeArticle de revueen_US
dc.identifier.doi10.3390/rs13091856en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalRemote Sensingen_US
bordeaux.page1856en_US
bordeaux.volume13en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue9en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamMETHYSen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.identifierhal-04488058
hal.version1
hal.date.transferred2024-03-04T10:57:34Z
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exporttrue
workflow.import.sourcedissemin
dc.rights.ccCC BYen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Remote%20Sensing&rft.date=2021-05-10&rft.volume=13&rft.issue=9&rft.spage=1856&rft.epage=1856&rft.eissn=2072-4292&rft.issn=2072-4292&rft.au=ZEIGER,%20Pierre&FRAPPART,%20Fr%C3%A9d%C3%A9ric&DARROZES,%20Jos%C3%A9&ROUSSEL,%20Nicolas&BONNETON,%20Philippe&rft.genre=article


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