Mean earth ellipsoid determined from SEASAT 1 altimetric observations

Physics

Scientific paper

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Celestial Geodesy, Ellipsoids, Geoids, Radio Altimeters, Satellite Observation, Errors, Seasat 1

Scientific paper

Geoid heights derived from Seasat-1 radar altimetry of the ocean surface and potential coefficients are used to determine the radius and the origin of a mean earth ellipsoid, incorporating geoid adjustments derived from potential coefficients so that geoid differences can be minimized. The adjustment method is then applied to the ellipsoid which best fits the geoid derived from potential coefficients. A mean ellipsoid with a radius of 6378134.9 m, and origin shifts less than 1 m in the x and y components and approximately -2.5 m in the z component, is determined by solutions employing two different sets of altimetric geoid heights and potential coefficient geoid heights.

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