Assessment of neutral atmospheric delay predictions based on the temporal resolution of an atmospheric model

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dc.contributor.authorGouveia, Tayná Aparecida Ferreira [UNESP]
dc.contributor.authorSapucci, Luiz Fernando
dc.contributor.authorMonico, João Francisco Galera [UNESP]
dc.contributor.authorAlves, Daniele Barroca Marra [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionCentro de Previsão de Tempo e Estudos Climáticos/Divisão de Desenvolvimento e Modelagem
dc.date.accessioned2020-12-12T02:06:37Z
dc.date.available2020-12-12T02:06:37Z
dc.date.issued2020-01-01
dc.description.abstractIn Global Navigation Satellite Systems (GNSS), the effects of neutral atmosphere in electromagnetic signal propagation impacts directly on the quality of the final estimated position, leading to errors in the metric order. Using an atmospheric model is a good strategy to minimize these errors, because it becomes possible to obtain a neutral atmospheric delay with the same spatial and temporal resolution, taking into consideration particularities of the atmosphere treated by a numerical model. The regional model of the Center for Weather Forecasting and Climate Studies (CPTEC) used in this paper has a spatial resolution of 15 km and a temporal resolution of 3 hours. Usually, the delay prediction of 3 hours is interpolated in time to GNSS applications and this can influence the quality of the values obtained in each interpolated epoch. Higher temporal resolutions can lead to lower errors in the final position. In this paper, the quality of delay predictions is evaluated for this atmospheric model with resolutions of 6 and 3 hours. The estimated delay, derived from meteorological data in the same location as the geodetic data, is considered as “truth”. The temporal resolution of 3 hours shows better results than using 6 hours, particularly for the hydrostatic component in the initial prediction period, RMSE of 1.25 cm was reduced to 0.2 cm in NEIA station.en
dc.description.affiliationUniversidade Estadual Paulista-UNESP Faculdade de Ciência e Tecnologia Departamento de Cartográfica
dc.description.affiliationInstituto Nacional de Pesquisas Espaciais – INPE Centro de Previsão de Tempo e Estudos Climáticos/Divisão de Desenvolvimento e Modelagem
dc.description.affiliationUnespUniversidade Estadual Paulista-UNESP Faculdade de Ciência e Tecnologia Departamento de Cartográfica
dc.identifierhttp://dx.doi.org/10.1590/s1982-21702020000100001
dc.identifier.citationBoletim de Ciencias Geodesicas, v. 26, n. 1, 2020.
dc.identifier.doi10.1590/s1982-21702020000100001
dc.identifier.fileS1982-21702020000100200.pdf
dc.identifier.issn1982-2170
dc.identifier.issn1413-4853
dc.identifier.scieloS1982-21702020000100200
dc.identifier.scopus2-s2.0-85084990385
dc.identifier.urihttp://hdl.handle.net/11449/200438
dc.language.isoeng
dc.relation.ispartofBoletim de Ciencias Geodesicas
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAtmospheric model
dc.subjectGNSS positioning
dc.subjectNeutral atmospheric delay modeling
dc.titleAssessment of neutral atmospheric delay predictions based on the temporal resolution of an atmospheric modelen
dc.typeArtigo
unesp.author.orcid0000-0003-1140-752X[1]
unesp.author.orcid0000-0001-8420-8033[2]
unesp.author.orcid0000-0003-4101-9261[3]
unesp.author.orcid0000-0002-9033-8499[4]

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