AUSGeoid98 geoid model of Australia: data treatment, computations and comparisons with GPS-levelling data
MetadataShow full item record
The AUSGeoid98 gravimetric geoid model of Australia has been computed using data from the EGM96 global geopotential model, the 1996 release of the Australian gravity database, a nationwide digital elevation model, and satellite altimeter-derived marine gravity anomalies. The geoid heights are on a 2 by 2 arc-minute grid with respect to the GRS80 ellipsoid, and residual geoid heights were computed using the 1-D fast Fourier transform technique. This has been adapted to include a deterministically modified kernel over a spherical cap of limited spatial extent in the generalised Stokes scheme. Comparisons of AUSGeoid98 with GPS and Australian Height Datum (AHD) heights across the continent give an RMS agreement of -0.364 m, although this apparently large value is attributed partly to distortions in the AHD.
Originally published in Journal of Geodesy 2001 75(5/6) pp. 313-330
Copyright Springer Verlag
The original article is available at springerlink.com
Showing items related by title, author, creator and subject.
Tenzer, R.; Hirt, C.; Claessens, Sten; Novák, P. (2015)In geodesy, the geoid and the quasigeoid are used as a reference surface for heights. Despite some similarities between these two concepts, the differences between the geoid and the quasigeoid (i.e. the geoid-to-quasigeoid ...
An evaluation of FFT geoid determination techniques and their application to height determination using GPS in Australia.Zhang, Kefei (1997)A new, high resolution, high precision and accuracy gravimetric geoid of Australia has been produced using updated data, theory and computational methodologies. The fast Fourier transform technique is applied to the ...
A Synthetic Earth Gravity Model Designed Specifically for Testing Regional Gravimetric Geoid Determination AlgorithmsBaran, Ireneusz; Kuhn, Michael; Claessens, Sten; Featherstone, Will; Holmes, S.; Vanicek, P. (2006)A synthetic [simulated] Earth gravity model (SEGM) of the geoid, gravity and topography has been constructed over Australia specifically for validating regional gravimetric geoid determination theories, techniques and ...