Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The AUSGeoid98 geoid model of Australia: data treatment, computations and comparisons with GPS-levelling data
Abstract. 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.
The AUSGeoid98 geoid model of Australia: data treatment, computations and comparisons with GPS-levelling data
Abstract. 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.
The AUSGeoid98 geoid model of Australia: data treatment, computations and comparisons with GPS-levelling data
Featherstone, W. E. (Autor:in) / Kirby, J. F. (Autor:in) / Kearsley, A. H. W. (Autor:in) / Gilliland, J. R. (Autor:in) / Johnston, G. M. (Autor:in) / Steed, J. (Autor:in) / Forsberg, R. (Autor:in) / Sideris, M. G. (Autor:in)
Journal of Geodesy ; 75
2001
Aufsatz (Zeitschrift)
Englisch
BKL:
38.73
Geodäsie
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