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GOCE and Its Use for a High-Resolution Global Gravity Combination Model

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System Earth via Geodetic-Geophysical Space Techniques

Part of the book series: Advanced Technologies in Earth Sciences ((ATES))

Abstract

The recently launched GOCE mission will set a new milestone in gravity field determination. Due to the high accuracy of its gradiometry observations, the resulting satellite-only Earth gravity models will have a resolution of up to degree/order 250, with an expected accuracy of 1–2 cm in terms of geoid heights. In order to increase this resolution up to at least 360, a combination with surface data is necessary. In the following article the strategies for this combination developed at GFZ, Helmholtz-Zentrum Potsdam, are outlined and discussed. Basically two approaches for the combination exist; the first uses complete and block-diagonal normal equations, while the other uses complete normal equations only. In this article, both approaches are explained with their pros and cons, and the GFZ-strategy is presented at its current stage for the combination of GOCE with GRACE and surface data.

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Author information

Authors and Affiliations

  1. Department 1: Geodesy and Remote Sensing, Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Telegrafenberg, 14473, Potsdam, Germany

    Richard Shako, Christoph Förste & Oleg Abrikosov

  2. University of Bonn, Institute of Geodesy and Geoinformation, 53115, Bonn, Germany

    Jürgen Kusche

Authors
  1. Richard Shako
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  2. Christoph Förste
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  3. Oleg Abrikosov
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  4. Jürgen Kusche
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Corresponding author

Correspondence to Richard Shako .

Editor information

Editors and Affiliations

  1. Helmholtz-Zentrum Potsdam, Deutsches GeoForschungsZentrum GFZ, Telegrafenberg, Potsdam, 14473, Germany

    Frank M. Flechtner

  2. TU München, Arcisstr. 21, München, 80333, Germany

    Thomas Gruber

  3. Helmholtz-Zentrum Potsdam, Deutsches GeoForschungsZentrum GFZ, Telegrafenberg, Potsdam, 14473, Germany

    Andreas Güntner

  4. , Institut de Physique du Globe de Paris G, Université Paris Diderot, rue Thomas Mann 5, Paris, 75205, France

    M. Mandea

  5. Photogrammetrie HP V G 52, ETH Zürich, Schaffmattstraße 34, 8093, Zürich, Switzerland

    Markus Rothacher

  6. Helmholtz-Zentrum Potsdam, Deutsches GeoForschungsZentrum GFZ, Telegrafenberg, Potsdam, 14473, Germany

    Tilo Schöne

  7. Abt. 1 Geodäsie und Fernerkundung, GeoForschungsZentrum Potsdam, Telegrafenberg A 17, Potsdam, 14473, Brandenburg, Germany

    Jens Wickert

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Shako, R., Förste, C., Abrikosov, O., Kusche, J. (2010). GOCE and Its Use for a High-Resolution Global Gravity Combination Model. In: Flechtner, F., et al. System Earth via Geodetic-Geophysical Space Techniques. Advanced Technologies in Earth Sciences. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-10228-8_18

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