Computer Science – Performance
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufm.g12b..02w&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #G12B-02
Computer Science
Performance
1200 Geodesy And Gravity, 1214 Geopotential Theory And Determination, 1234 Regional And Global Gravity Anomalies And Earth Structure, 1241 Satellite Orbits
Scientific paper
The GRACE team at the Jet Propulsion Laboratory have over the past few years adapted the MIRAGE software used for deep space tracking data analysis and determination of the gravity field of planetary bodies such as Mars, Venus, the Moon, and 433 Eros, for GRACE applications. We have used this software to produce Earth gravity fields of unprecedented quality from a combination of the first GRACE K/Ka-band intersatellite tracking, GPS, accelerometer, and star camera data. In this paper we will present the results of that gravity field analysis, including the parameterization used, the spectral content of the residuals, the calibrated covariance, and performance in external tests such as orbit fits and sea surface topography. In addition, since the software and parameterization are independent of that used at the University of Texas and GFZ Potsdam, it provides a type of verification of the fields, and we will discuss the results of the intercomparison of the available gravity solutions.
Bertiger Willy
Kruizinga G.
Romans L.
Watkins Michael M.
Wu Seongho
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