THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – INSTRUMENT SUMMARY - AltiKa -
Full Name Ka-band Altimeter Status Operational
Instrument Agencies CNES Maturity
Instrument Type Radar altimeters Geometry Nadir-viewing
Instrument Technology Radar altimeter Sampling Other
Data Access Constrained Access Data Format
Measurements and Applications Sea surface height.
Resolution Summary
Swath Summary
Accuracy Summary
Waveband Summary 35.5 - 36 GHz, passive channels (radiometer): 24 (K-band) and 37 (Ka-band) GHz; active radar altimeter: 35 GHz (Ka-band)
MW (~1.0 cm - ~100 cm)
Ka-Band (26.5 to 40 GHz)
K-Band (18 to 26.5 GHz)
Instrument Measurements
CategoryParameterAccuracy
Atmospheric Humidity FieldsAtmospheric specific humidity (TC) 
Ocean surface windsWind speed over sea surface (horizontal) 
Ocean topography/currentsSea level 
Ocean wave height and spectrumSignificant wave height 
Instrument Missions
SARAL - Satellite with ARgos and ALtiKa (2012 - 2018)
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