Physics
Scientific paper
Feb 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20..249l&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 3, p. 249-252.
Physics
9
Calibrating, Earth Orbits, Error Analysis, Gravitational Fields, Orbit Calculation, Satellite Observation, Covariance, Geoids, Geopotential, Laser Ranger/Tracker, Spot (French Satellite)
Scientific paper
A new method has been developed to provide a direct test of the error calibrations of gravity models based on actual satellite observations. The basic approach projects the error estimates of the gravity model parameters onto satellite observations, and the results of these projections are then compared with data residual computed from the orbital fits. To allow specific testing of the gravity error calibrations, subset solutions are computed based on the data set and data weighting of the gravity model. The approach is demonstrated using GEM-T3 to show that the gravity error estimates are well calibrated and that reliable predictions of orbit accuracies can be achieved for independent orbits.
Chan Joseph C.
Chinn Douglas S.
Klosko Steve M.
Lerch F. J.
Nerem Steven R.
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