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| Titel |
Space gravity spectroscopy: the benefits of Taylor-Karman structured criterion matrices |
| VerfasserIn |
P. Marinkovice, E. Grafarend, T. Reubelt |
| 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 (2003-07-11), S.113-120 |
| Datensatznummer |
250000045
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| Publikation (Nr.) |
 copernicus.org/adgeo-1-113-2003.pdf |
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| Zusammenfassung |
As soon as a space gravity spectroscopy was
successfully performed, for instance by means of semicontinuous
ephemeris of LEO - GPS tracked satellites, the
problem of data validation appeared. It is for this purpose
that a stochastic model for the homogeneous and isotropic
analysis of measurements, obtained as “directly" measured
values in LEO satellite missions (CHAMP, GRACE, GOCE),
is studied. An isotropic analysis is represented by the homogeneous
distribution of measured values and the statistical
properties of the model are calculated. In particular, a
correlation structure function is defined by the third order
tensor (Taylor-Karman tensor) for the ensemble average of
a set of incremental differences in measured components.
Specifically, Taylor-Karman correlation tensor is calculated
with the assumption that the analyzed random function is of
a “potential type". The special class of homogeneous and
isotropic correlation functions is introduced. Finally, a successful
application of the concept is presented in the case
study CHAMP and a comparison between modeled and estimated
correlations is performed.
Key words. data validation, 3D correlation tensor, homogeneous
and isotropic correlation functions, Taylor-Karman
structure, CHAMP |
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