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More Accurate and Faster Available CHAMP and GRACE Gravity Fields for the User Community Read chapter Read first chapter

2010 | OriginalPaper | Chapter

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

Authors : Richard Shako, Christoph Förste, Oleg Abrikosov, Jürgen Kusche

Published in: System Earth via Geodetic-Geophysical Space Techniques

Publisher: Springer Berlin Heidelberg

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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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previous chapter GOCE Data Analysis: From Calibrated Measurements to the Global Earth Gravity Field
next chapter Spectral Approaches to Solving the Polar Gap Problem
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Metadata
Title
GOCE and Its Use for a High-Resolution Global Gravity Combination Model
Authors
Richard Shako
Christoph Förste
Oleg Abrikosov
Jürgen Kusche
Copyright Year
2010
Publisher
Springer Berlin Heidelberg
Book
System Earth via Geodetic-Geophysical Space Techniques

Print ISBN: 978-3-642-10227-1

Electronic ISBN: 978-3-642-10228-8

Copyright Year: 2010

DOI
https://doi.org/10.1007/978-3-642-10228-8_18

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