Journal article
The AUSGeoid98 geoid model of Australia: data treatment, computations and comparisons with GPS-levelling data
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 arcminute grid with respect to the GRS80 ellipsoid, and residual geoid heights were computed using the I-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.
Language: | English |
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Publisher: | Springer-Verlag |
Year: | 2001 |
Pages: | 313-330 |
ISSN: | 09497714 and 14321394 |
Types: | Journal article |
DOI: | 10.1007/s001900100177 |
ORCIDs: | Forsberg, René |