The Integration of Brazilian Geodetic Network into SIRGAS — Preliminary Results —

  • Sonia M. A. Costa
  • Don S. Beattie
  • Katia D. Pereira
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 120)


Prior to the advent of satellite positioning, geodetic systems were based on a mathematic model of the Earth which best fits over a specific area. The surveys were developed for mapping requirements where precision of a meter was considered satisfactory. With the adaptation of space positioning techniques by the scientific community, the geodetic systems assumed a global character where centimetric precision could be obtained by these systems. As a consequence of the new technologies, the change from local datum to geocentric reference systems is required, in order to make the information compatible on an international level. To this end Brazil has been involved in the definition of the South American Geocentric Reference System (SIRGAS), whose purpose is to establish a geodetic system for the whole of South America. Brazil will complete the next step to accomplish this change.

The integration of Brazilian Geodetic Network to SIRGAS will be carried out through a simultaneous adjustment of the network using the software Geodetic Adjustment using Helmert Blocking of Space and Terrestrial data (GHOST). In the adjustment, the GRS80 ellipsoid will be adopted and all Brazilian Network will be constrained by 11 SIRGAS stations within the national area. Terrestrial and spatial data will be combined to generate coordinates for about 5000 stations. Some comparison studies about geoid model quantities to be adopted in the adjustment will be presented as well as some preliminary adjustment results.


Geopotential Model Geodetic Network Geoid Undulation Geodetic System Terrestrial Data 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. Beattie D.S. (1987): Program GHOST User Documentation, Geodetic Survey of Canada, Ottawa.Google Scholar
  2. Cadess H. et al (1991): Inter American Geodetic Integration, PAIGH.Google Scholar
  3. Fortes L.P.S. (1997): Operacionalização da Rede Brasileira de Monitoramento Continuo do Sistema GPS (RBMC), master thesis, Instituto Militar de Engenharia.Google Scholar
  4. IBGE: Ajustamento da Rede Planimétrica do Sistema Geodésico Brasileiro 2014 Relatório (1996), Departamento de Geodésia, Rio de Janeiro, Brasil.Google Scholar
  5. NGS (1983): North American Datum of 1983, NOAA Professional Paper NOS2, National Geodetic Information Center, NOAA.Google Scholar
  6. Rothacher M., Mervart L. (1996): Bernese GPS Software Version 4.0, Astronomical Institute University of Berne, Berne.Google Scholar
  7. SIRGAS Relatório Final (1997): IBGE, Rio de Janeiro.Google Scholar

Copyright information

© Springer-Verlag Berlin · Heidelberg 2000

Authors and Affiliations

  • Sonia M. A. Costa
    • 1
  • Don S. Beattie
    • 2
  • Katia D. Pereira
    • 3
  1. 1.Brazilian Institute of Geography and Statistics (IBGE)Rio de Janeiro — RJBrazil
  2. 2.Geomatics Canada, Geodetic Survey DevisionCanada
  3. 3.Brazilian Institute of Geography and Statistics (IBGE)Rio de Janeiro — RJBrazil

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