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Regional Models


  Authors: A. Lyszkowicz, M. Birylo, K. Becek     Created: 2014    Resp: A. Lyszkowicz  
      Status: PUBLIC   
The gravimetric geoid in Brunei was computing for the area 3.5° < lat < 5,5° and 113.5° < lon < 116° , with a resolution of 2'x 2' and using terrestrial, airborne and altimetric gravity data. Least squares collocation in the framework of a remove-restore technique is applied. The global model was EGM2008, referred to the GRS80 ellipsoid, while the terrain model was SRTM30 PLUS. The estimated accuracy of this geoid model is ± 1.6 m when evaluated at 86 GPS survey marks tied to the local vertical datum by spirit levelling. Because of the poor quality of these GPS/levelling data, this estimated accuracy is not reliable and the actual accuracy is expected to be slightly below ± 0.3 m.

A. Lyszkowicz, M. Birylo, K. Becek (2014). A new geoid for Brunei Darussalam by the collocation method. Geodesy and Cartography, 63(2), pp. 183-198. DOI: 10.2478/geocart-2014-0013

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