Searching for the Optimal Relationships Between SIRGAS2000, South American Datum of 1969 and Corrego Alegre in Brazil

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dc.contributor.authorOliveria, Leonardo C.
dc.contributor.authorSantos, Marcelo C.
dc.contributor.authorNievinski, Felipe G.
dc.contributor.authorLeandro, Rodrigo F.
dc.contributor.authorCosta, Sonia M. A.
dc.contributor.authorSantos, Marcos F.
dc.contributor.authorMagna, Joao [UNESP]
dc.contributor.authorGalo, Mauricio [UNESP]
dc.contributor.authorCamargo, Paulo O. [UNESP]
dc.contributor.authorMonico, Joao G. [UNESP]
dc.contributor.authorSilva, Carlos U.
dc.contributor.authorMaia, Tule B.
dc.contributor.authorSideris, M. G.
dc.contributor.institutionInst Militar Engn
dc.contributor.institutionUniv New Brunswick
dc.contributor.institutionInst Brasileiro Geog & Estat
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Fed Ceara
dc.date.accessioned2020-12-10T18:11:20Z
dc.date.available2020-12-10T18:11:20Z
dc.date.issued2009-01-01
dc.description.abstractBrazil has moved towards the adoption of a geocentric system, SIRGAS2000. With the adoption of this system, starting in 2005, a great demand has been created towards transforming the current data sets from the South American Datum of 1969 (SAD-69), in its two distinct realizations, and the Corrego Alegre frames into SIRGAS2000. The fact that these four frames will co-exist until 2014 creates positive and negative situations. Due to the distortion between those frames, the relationships among them cannot be well established with Helmert transformation parameters alone. To solve this problem, five Study Groups were created to look for the optimal relationships for coordinate transformation between those frames. The approaches being investigated to augment the parameter transformation are based on: Collocation, Delaunay, Regular grids (NTv2 and Sheppard method) and Neural Networks. The research is currently going on. This paper describes the current efforts towards defining the optimal relationships among these four frames, from the mathematical point-of-view. The work described in the paper has been carried out under the scope of the National Geospatial Framework Project (www.pign.org), sponsored by the Canadian International Development Agency.en
dc.description.affiliationInst Militar Engn, Secao Ensino Engn Cartog, 80-6 Andar, BR-22290270 Rio De Janeiro, Brazil
dc.description.affiliationUniv New Brunswick, Dept Geodesy & Geomat Engn, Fredericton, NB E3B 5A3, Canada
dc.description.affiliationInst Brasileiro Geog & Estat, Coordenacao Geodesia, Rio De Janeiro, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Cartog, Sao Paulo, Brazil
dc.description.affiliationUniv Fed Ceara, Dept Engn Transport, BR-60455760 Fortaleza, Ceara, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Cartog, Sao Paulo, Brazil
dc.description.sponsorship<it>Projeto de Mudanca do Referencial Geodesico</it>
dc.description.sponsorshipNational Geospatial Framework Project
dc.description.sponsorshipCanadian International Development Agency (CIDA)
dc.description.sponsorshipGeodetic Survey Division of NRCan.
dc.format.extent71-+
dc.identifier.citationObserving Our Changing Earth. Berlin: Springer-verlag Berlin, v. 133, p. 71-+, 2009.
dc.identifier.issn0939-9585
dc.identifier.urihttp://hdl.handle.net/11449/195925
dc.identifier.wosWOS:000262710400009
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofObserving Our Changing Earth
dc.sourceWeb of Science
dc.subjectReference frames
dc.subjectCoordinate transformations
dc.subjectDistortion modelling
dc.titleSearching for the Optimal Relationships Between SIRGAS2000, South American Datum of 1969 and Corrego Alegre in Brazilen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
unesp.author.orcid0000-0002-0104-9960[8]

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