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Detailed geoid computations for GEOS-C altimeter experiment areasThe GEOS-C spacecraft is scheduled to carry onboard a radar altimeter for the purpose of measuring the geoid undulations in oceanic areas. An independently derived geoid map will provide a valuable complement to these experiments. A detailed gravimetric geoid is presented for the Atlantic and northeast Pacific Ocean areas based upon a combination of the Goddard Space Flight Center GEM-6 earth model and surface 1 deg x 1 deg gravity data. As part of this work a number of satellite derived gravity models were evaluated to establish the model which best represented the long wave length features of the geoid in the above mentioned area. Comparisons of the detailed geoid with the astrogeodetic data provided by the National Ocean Survey and dynamically derived tracking station heights indicate that the accuracy of this combined geoid is on the order of 2 meters or better where data was dense and 5 to 7 meters where data was less dense.
Document ID
19740002258
Acquisition Source
Legacy CDMS
Document Type
Preprint (Draft being sent to journal)
Authors
Marsh, J. G. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Vincent, S. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 3, 2013
Publication Date
October 1, 1973
Subject Category
Geophysics
Report/Patent Number
X-592-73-303
NASA-TM-X-70503
Accession Number
74N10371
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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