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    Band-Limited Kernel Modifications for Regional Geoid Determination Based on Dedicated Satellite Gravity Field Missions

    Access Status
    Fulltext not available
    Authors
    Featherstone, Will
    Date
    2003
    Type
    Conference Paper
    
    Metadata
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    Citation
    Featherstone, Will. 2003. Band-Limited Kernel Modifications for Regional Geoid Determination Based on Dedicated Satellite Gravity Field Missions, in I N Tziavos (ed), 3rd Meeting of the International Gravity and Geoid Commission, Aug 1 2003, pp. 341-346. Thessaloniki, Greece: Ziti Editions.
    Source Title
    Gravity and Geoid 2002
    Source Conference
    3rd Meeting of the International Gravity and Geoid Commission
    School
    Department of Spatial Sciences
    URI
    http://hdl.handle.net/20.500.11937/33857
    Collection
    • Curtin Research Publications
    Abstract

    Previous modifications to Stokes's formula are based on either deterministic or stochastic considerations, with only one or the other being used exclusively in practice. This paper presents their band-limited combination, where stochastic modifications are used only in those parts of the gravity field spectrum where error variances are reliable, and deterministic modifications are used where they are not. This aims to optimise the filter-ing properties of the modified kernel such that the different components of the gravity field spectrum are weighted according to their known or perceived reliability. Because long-wavelength errors often occur in terrestrial gravity anomalies, the use of a low-degree spheroidal Stokes kernel is advocated so as to realise the full benefit of geoid models computed from the current and planned dedicated satellite gravity field missions.

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