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

Authors

  • GABRIEL DO NASCIMENTO GUIMARÃES Instituto de Geografia da Universidade Federal de Uberlândia
  • DENIZAR BLITZKOW EPUSP
  • DENIZAR BLITZKOW EPUSP
  • RICCARDO BARZAGHI POLIMI
  • RICCARDO BARZAGHI POLIMI
  • ANA CRISTINA OLIVEIRA CANCORO DE MATOS EPUSP
  • ANA CRISTINA OLIVEIRA CANCORO DE MATOS EPUSP

DOI:

https://doi.org/10.5380/bcg.v20i1.35931

Keywords:

Geodesy, Geoid Model, GOCE Mission, Gravity

Abstract

The purpose of this manuscript is to compute and to evaluate the geoid model in the State of São 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.

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Published

2014-03-31

How to Cite

GUIMARÃES, G. D. N., BLITZKOW, D., BLITZKOW, D., BARZAGHI, R., BARZAGHI, R., DE MATOS, A. C. O. C., & DE MATOS, A. C. O. C. (2014). THE COMPUTATION OF THE GEOID MODEL IN THE STATE OF SÃO PAULO USING TWO METHODOLOGIES AND GOCE MODELS. Bulletin of Geodetic Sciences, 20(1). https://doi.org/10.5380/bcg.v20i1.35931

Issue

Vol. 20 No. 1 (2014)

Section

Article

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