Análise de séries temporais de coordenadas estimadas com GPS: uma proposta metodológica para detecção, remoção e recuperação de efeitos sazonais

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dc.contributor.authorRosa, Guilherme Poleszuk Dos Santos [UNESP]
dc.contributor.authorMonico, João Francisco Galera [UNESP]
dc.contributor.authorChaves, João Carlos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:24:00Z
dc.date.accessioned2014-05-20T13:22:36Z
dc.date.available2014-05-27T11:24:00Z
dc.date.available2014-05-20T13:22:36Z
dc.date.issued2009-10-21
dc.description.abstractGPS active networks are more and more used in geodetic surveying and scientific experiments, as water vapor monitoring in the atmosphere and lithosphere plate movement. Among the methods of GPS positioning, Precise Point Positioning (PPP) has provided very good results. A characteristic of PPP is related to the modeling and / or estimation of the errors involved in this method. The accuracy obtained for the coordinates can reach few millimeters. Seasonal effects can affect such accuracy if they are not consistent treated during the data processing. Coordinates time series analyses have been realized using Fourier or Harmonics spectral analyses, wavelets, least squares estimation among others. An approach is presented in this paper aiming to investigate the seasonal effects included in the stations coordinates time series. Experiments were carried out using data from stations Manaus (NAUS) and Fortaleza (BRFT) which belong to the Brazilian Continuous GPS Network (RBMC). The coordinates of these stations were estimated daily using PPP and were analyzed through wavelets for identification of the periods of the seasonal effects (annual and semi-annual) in each time series. These effects were removed by means of a filtering process applied in the series via the least squares adjustment (LSQ) of a periodic function. The results showed that the combination of these two mathematical tools, wavelets and LSQ, is an interesting and efficient technique for removal of seasonal effects in time series.en
dc.description.affiliationPrograma de Pós Graduação em Ciências Cartográficas Universidade Estadual Paulista - UNESP, Rua Roberto Simonsen, 305, Caixa Postal 467, CEP 19060-900 Presidente Prudente, SP
dc.description.affiliationUnespPrograma de Pós Graduação em Ciências Cartográficas Universidade Estadual Paulista - UNESP, Rua Roberto Simonsen, 305, Caixa Postal 467, CEP 19060-900 Presidente Prudente, SP
dc.format.extent51-72
dc.identifierhttp://ojs.c3sl.ufpr.br/ojs/index.php/bcg/article/view/15516
dc.identifier.citationBoletim de Ciencias Geodesicas, v. 15, n. 3, 2009.
dc.identifier.file2-s2.0-70350004999.pdf
dc.identifier.issn1413-4853
dc.identifier.lattes7180879644760038
dc.identifier.lattes1054859802289261
dc.identifier.scopus2-s2.0-70350004999
dc.identifier.urihttp://hdl.handle.net/11449/180896
dc.identifier.wosWOS:000276727100004
dc.language.isopor
dc.publisherUniversidade Federal do Paraná (UFPR), Centro Politecnico
dc.relation.ispartofBoletim de Ciências Geodésicas
dc.relation.ispartofsjr0,188
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.sourceWeb of Science
dc.subjectGPS active networks
dc.subjectLeast Square Method
dc.subjectPrecise Point Positioning
dc.subjectSeasonal effects
dc.subjectWavelets
dc.subjectaccuracy assessment
dc.subjectcoordinate
dc.subjectdata processing
dc.subjectdetection method
dc.subjectestimation method
dc.subjectexperimental study
dc.subjectFourier transform
dc.subjectgeodesy
dc.subjectgeodetic network
dc.subjectGPS
dc.subjectleast squares method
dc.subjectpositioning
dc.subjectspectral analysis
dc.subjecttime series analysis
dc.subjectwavelet analysis
dc.titleAnálise de séries temporais de coordenadas estimadas com GPS: uma proposta metodológica para detecção, remoção e recuperação de efeitos sazonaispt
dc.title.alternativeTime series analysis of coordinates estimated with GPS: a methodological approach to detect, remove and recover seasonal effectsen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/bcg/paboutj.htm
dcterms.licensehttp://ojs.c3sl.ufpr.br/ojs2/index.php/bcg/about/submissions#copyrightNotice
dcterms.rightsHolderUniversidade Federal do Paraná (UFPR), Centro Politecnico
unesp.author.lattes7180879644760038
unesp.author.lattes1054859802289261
unesp.author.orcid0000-0003-4101-9261[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências e Tecnologia, Presidente Prudentept

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Artigos - Cartografia - FCT