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| Titel |
Integrated sensor analysis for GRACE – development and validation |
| VerfasserIn |
B. Frommknecht, H. Oberndorfer, F. Flechtner, R. Schmidt |
| 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.57-63 |
| Datensatznummer |
250000036
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| Publikation (Nr.) |
 copernicus.org/adgeo-1-57-2003.pdf |
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| Zusammenfassung |
The focus of this article is on the accelerometer
on board the two GRACE (Gravity Recovery and Climate
Experiment) satellites. In a first analysis the accelerometer
system is studied. The behavior of the test mass and its capacitive
feedback system is simulated in the time and the
frequency domain for one degree of freedom. Only linear
accelerations are considered so far. The second part of the
analysis is about the practical implementation of the simulation
model: Non-gravitational forces were derived from the
GFZ (GeoForschungsZentrum) EPOS (Earth Parameter and
Orbit System) software. In a closed loop the accelerometer
measurements derived from these data in connection with
simulated tracking data have been used for orbit recovery including
the estimation of biases and scale factors for the accelerometer
data. Details and results of this procedure are
presented.
Key words. GRACE – sensor analysis – accelerometer |
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