THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – INSTRUMENT SUMMARY - SIRAL -
Full Name SAR Interferometer Radar Altimeter Status Operational
Instrument Agencies ESA Maturity
Instrument Type Radar altimeters Geometry Nadir-viewing
Instrument Technology Radar altimeter Sampling Other
Data Access Open Access Data Format
Measurements and Applications Marine ice and terrestrial ice sheet thickness measurement.
Resolution Summary Range resolution 45 cm, along-track resolution 250 m
Swath Summary Footprint 15 km
Accuracy Summary Arctic sea-ice: 1.6 cm/year for 300 km x 300 km cells, Land ice (small scale): 3.3 cm/year for 100 x 100 km cells, Land ice (large scale): 0.17 cm/year for Antarctica size area
Waveband Summary Microwave: 13.575 GHz (Ku-Band)
MW (~1.0 cm - ~100 cm)
Ku-Band (12.5 to 18 GHz)
Instrument Measurements
CategoryParameterAccuracy
Ice sheet topographySea-ice sheet topography 
Landscape topographyLand surface topography 
Sea ice cover, edge and thicknessSea-ice thickness 
Instrument Missions
CryoSat - CryoSat (Earth Explorer Opportunity Mission) (2005 - 2005)
CryoSat-2 - CryoSat-2 (Earth Explorer Opportunity Mission) (2010 - 2021)
Copyright CEOS | About | Site Search Researched and written by Symbios