THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – INSTRUMENT SUMMARY - ASAR (image mode) -
Full Name Advanced Synthetic Aperture Radar (Image mode) Status No longer operational
Instrument Agencies ESA Maturity
Instrument Type Imaging microwave radars Geometry Cross-track scanning
Instrument Technology Imaging radar (SAR) Sampling Imaging
Data Access Constrained Access Data Format
Measurements and Applications All-weather images of ocean, land and ice for monitoring of land surface processes, sea and polar ice, sea state, and geological and hydrological applications.
Resolution Summary
Swath Summary
Accuracy Summary
Waveband Summary
MW (~1.0 cm - ~100 cm)
C-Band (8 - 4 GHz)
Instrument Measurements
CategoryParameterAccuracy
Landscape topographyLand surface topography 
Multi-purpose imagery (land)Land surface imagery 
Multi-purpose imagery (ocean)Ocean imagery and water leaving radiance 
Ocean surface windsWind speed over sea surface (horizontal) 
Wind vector over sea surface (horizontal) 
Ocean topography/currentsOcean surface currents (vector) 
Bathymetry3 [cm]
Ocean wave height and spectrumSignificant wave height 
Sea ice cover, edge and thicknessSea-ice cover 
Sea-ice type 
Iceberg fractional cover 
Iceberg height 
Glacier motion 
Snow cover, edge and depthSnow cover 
Soil moistureSoil moisture at the surface 
VegetationVegetation type 
Land cover 
Instrument Missions
Envisat - Environmental Satellite (2002 - 2012)
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