Accession Number : ADA117910

Title :   Mean Earth Ellipsoid Determined from SEASAT Altimeter Observations.

Descriptive Note : Final rept.,

Corporate Author : NAVAL SURFACE WEAPONS CENTER DAHLGREN VA

Personal Author(s) : West,Gladys B

PDF Url : ADA117910

Report Date : Sep 1981

Pagination or Media Count : 21

Abstract : The radius and the origin of a mean-earth ellipsoid have been determined from SEASAT satellite radar altimeter observations of the ocean surface and potential coefficients. Assuming that the altimetric geoid is the best available, adjustments are made to the geoid derived from potential coefficients so that the geoid height differences are minimized. A least-squares fitting procedure based on mean geoid heights in 5 degrees x 5 degrees areas was used in the determination of the ellipsoidal parameters. Solutions from two different sets of altimetric geoid heights and geoid heights derived from potential coefficients gave a mean-earth ellipsoid with radius, a = 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. (Author)

Descriptors :   *Earth(Planet), *Ellipsoids, *Measurement, *Scientific satellites, Radar, Altimeters, Parameters, Ocean surface

Subject Categories : Astronomy

Distribution Statement : APPROVED FOR PUBLIC RELEASE