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    AUSGeoid98 geoid model of Australia: data treatment, computations and comparisons with GPS-levelling data

    Access Status
    Fulltext not available
    Authors
    Featherstone, Will
    Kirby, Jon
    Kearsley, A.
    Gilliland, J.
    Johnston, G.
    Steed, J.
    Forsberg, R.
    Sideris, M.
    Date
    2001
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Featherstone, W.E. and Kirby, J.F. and Kearsley, A.H.W. and Gilliland, J.R. and Johnston, G.M. and Steed, J. and Forsberg, R. and Sideris, M.G.. 2001. AUSGeoid98 geoid model of Australia: data treatment, computations and comparisons with GPS-levelling data. Journal of Geodesy 75 (5/6): 313-330.
    Source Title
    Journal of Geodesy
    DOI
    10.1007/s001900100177
    Faculty
    Division of Resources and Environment
    Department of Spatial Sciences
    Remarks

    Originally published in Journal of Geodesy 2001 75(5/6) pp. 313-330

    Copyright Springer Verlag

    The original article is available at springerlink.com

    URI
    http://hdl.handle.net/20.500.11937/41995
    Collection
    • Curtin Research Publications
    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.

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