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THE COMPUTATION OF THE GEOID MODEL IN THE STATE OF SAO PAULO USING TWO METHODOLOGIES AND GOCE MODELS

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Autor(es):
Guimaraes, Gabriel do Nascimento [1] ; Blitzkow, Denizar [2] ; Barzaghi, Riccardo [3] ; Oliveira Cancoro de Matos, Ana Cristina [2]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Fed Uberlandia, Inst Geog, Uberlandia, MG - Brazil
[2] Univ Sao Paulo, Escola Politecn, LTG, BR-05508 Sao Paulo - Brazil
[3] Politecn Milano POLIMI, DIIAR Sez Rilevamento, Milan - Italy
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Bol. Ciênc. Geod.; v. 20, n. 1, p. 183-203, JAN-MAR 2014.
Citações Web of Science: 0
Resumo

The purpose of this manuscript is to compute and to evaluate the geoid model in the State of Sao Paulo from two methodologies (Stokes' integral through the Fast Fourier Transform - FFT and Least Squares Collocation - LSC). Another objective of this study is to verify the potentiality of GOCE-based. A special attention is given to GOCE mission. The theory related to Stokes' integral and Least Squares Collocation is also discussed in this work. The spectral decomposition was employed in the geoid models computation and the long wavelength component was represented by EGM2008 up to degree and order 150 and 360 and GOCE-based models up to 150. The models were compared in terms of geoid height residual and absolute and relative comparisons from GPS/leveling and the results show consistency between them. In addition, a comparison in the mountain regions was carried out to verify the methodologies behavior in this area; the results showed that LSC is less consistent than FFT. (AU)

Processo FAPESP: 06/04008-2 - GNSS: investigações e aplicações no posicionamento geodésico, em estudos relacionados com a atmosfera e na agricultura de precisão
Beneficiário:Joao Francisco Galera Monico
Linha de fomento: Auxílio à Pesquisa - Temático