CEOS Instrument: Radar Altimeter




Instrument:ALT
Agencies: NSOAS [Primary]
 CAST
Mission: HY-2A
Status:Operational
Type:Radar altimeter
Description:Global ocean topography, sea level and gravity field measurements
Spatial Resolution: 16 km
Swath Width: 16 km
Wavebands: 13.58 GHz and 5.25 GHz
Technology: Radar altimeter
Description: Nadir-viewing radar for very accurate ranging measurement between satellite and surface. The spread of echoes provides information on significant wave height, the intensity on the wind speed, the multi-temporal analysis the ocean dynamic topography and the geoid. The instantaneous field of view is ~ 25 km and moves along track. The radar altimeter operates in Ku-band (~ 13 GHz) with the support of C-band (~ 5 GHz) for correction from ionospheric rotation; and is associated to a nadir-pointing MW radiometer for water vapour correction. Applicable only in LEO.

Measurement List:

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CEOS Systems Engineering Office (SEO)

CEOS Data Base Version: 17 - Created: 2012-01-18