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Titel |
GOCE SGG and SST quick-look gravity field analysis |
VerfasserIn |
R. Pail, M. Wermut |
Medientyp |
Artikel
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Sprache |
Englisch
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ISSN |
1680-7340
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Digitales Dokument |
URL |
Erschienen |
In: G1. The new gravity field mission (CHAMP, GRACE, GOCE): from measurements to geophysical interpretation ; Nr. 1 (2003-06-17), S.5-9 |
Datensatznummer |
250000029
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Publikation (Nr.) |
copernicus.org/adgeo-1-5-2003.pdf |
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Zusammenfassung |
The purpose of quick-look analysis in the framework
of the GOCE data processing architecture is to analyse
partial data sets of satellite gravity gradiometry (SGG) and
satellite-to-satellite tracking in high-low mode (hl-SST), in
order to derive a diagnosis of the system performance. The
semi-analytic (SA) method for gravity field recovery from
GOCE observations, which is based on Fast Fourier Transform,
is used. From a theoretical point of view, a number
of requirements (circular, exact repeat orbit, uninterrupted
measurement time series) have to be fulfilled. However, in
the present paper it is demonstrated, that the SA approach
can also be applied in the practical case of non-circular, nonrepeat
orbits, and data gaps in the GOCE measurement time
series. The performance of this approach is assessed in 5 case
studies on the basis of a realistic closed-loop simulation.
Key words. GOCE – semi-analytic approach – colored
noise – data gaps – repeat orbit |
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