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An improved error assessment for the GEM-T1 gravitational modelSeveral tests were designed to determine the correct error variances for the GEM-T1 gravitational solution which was derived exclusively from satellite tracking data. The basic method employs both wholly independent and dependent subset data solutions and produces a full field coefficient by coefficient estimate of the model uncertainties. The GEM-T1 errors were further analyzed using a method based upon eigenvalue-eigenvector analysis which calibrates the entire covariance matrix. Dependent satellite and independent altimetric and surface gravity data sets, as well as independent satellite deep resonance information, confirm essentially the same error assessment.
Document ID
19900011202
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lerch, F. J. (NASA Goddard Space Flight Center Greenbelt, MD., United States)
Marsh, J. G. (NASA Goddard Space Flight Center Greenbelt, MD., United States)
Klosko, S. M. (EG and G Washington Analytical Services Center, Inc., Lanham MD., United States)
Pavlis, E. C. (EG and G Washington Analytical Services Center, Inc., Lanham MD., United States)
Patel, G. B. (ST Systems Corp. Lanham, MD., United States)
Chinn, D. S. (ST Systems Corp. Lanham, MD., United States)
Wagner, C. A. (National Geodetic Survey Rockville, MD., United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1989
Publication Information
Publication: Ohio State Univ., Progress in the Determination of the Earth's Gravity Field
Subject Category
Geophysics
Accession Number
90N20518
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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