This page no longer updated from 31 October 2001. Latest version can be found at Geosat

Other Designations: Geodetic Satellite. Class: Earth. Type: Radarsat. Nation: United States. Agency: US Navy. Manufacturer: JHU/APL.

Geosat was a US Navy satellite designed to measure sea surface heights to within 5 cm. After a one-and-a-half year long classified mission for the Navy, Geosat's scientific Exact Repeat Mission (ERM) began on November 8, 1986. When the ERM ended in January 1990 (due to failures of both on-board tape recorders), more than three years of precise altimeter data were available to the scientific community. Spacecraft: Gravity gradient stabilised. Two tape recorders. Payload: Radar altimeter to measure sea surface height.


Design Life: 3 years. Total Mass: 635 kg.

Geosat Chronology

13 March 1985 Geosat Launch Site: Vandenberg . Launch Vehicle: Atlas E. Mass: 635 kg. Perigee: 775 km. Apogee: 779 km. Inclination: 108.1 deg.

Ocean sea height mapping. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).


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Last update 12 March 2001.
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© Mark Wade, 2001 .