The Radar Altimeter is a Ku-band (13.8 GHz) nadir-pointing active microwave sensor designed to measure the time return echoes from ocean and ice surfaces. Functioning in one of two operational modes (ocean or ice) the Radar Altimeter provides information on significant wave height; surface wind speed; sea surface elevation, which relates to ocean currents, the surface geoid and tides; and various parameters over sea ice and ice sheets.
Wave height: 0.5m or 10% (whichever is smaller), Sea surface elevation: better than 10cm
Footprint is 16-20km
Microwave: Ku-band: 13.8GHz
Land ( Topography/Mapping ), Snow and Ice ( Sea Ice ), Ocean and Coast ( Ocean Currents and Topography , Ocean Waves ), Solid Earth ( Geoid )
Latest Mission Operations News
11 September 2014
The full-mission reprocessing of the ESA ERS Radar Altimetry (RA) Level 2 data has been completed and the new dataset is now available online to the ESA Earth Observation user community.
Related Data Types
Related (Key) Documentation