Title: Preliminary Results for the Simultaneous Estimation of Geoid Undulations and Sea Surface Topography by Geosat Altimeter Data
Abstract: Satellite altimeter data contains information about the heights of the geoid above the reference ellipsoid, the geoid undulations, the heights of the sea surface above the geoid, the sea surface topography and the radial component of the orbital error. The deviation of the sea surface from the geoid is mainly caused by currents and tidal effects. For the simultaneous estimation of all unknown parameters, based on a modified Kalman filter developed from Bayesian statistics, it is necessary to introduce prior information. A simplification of the Navier-Stokes-equations in form of a quasi-geostrophic model is used to represent the sea surface topography. Information on the orbital error is obtained by a crossing point analysis.
Publication Year: 1993
Publication Date: 1993-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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