CEOS EO HANDBOOK – INSTRUMENT SUMMARY - AMI/SAR/Image -
Full Name Active Microwave Instrumentation. Image Mode Status No longer operational
Instrument Agencies ESA Maturity
Instrument Type Imaging microwave radars Geometry Side-looking
Instrument Technology Imaging radar (SAR) Sampling Imaging
Data Access Constrained Access Data Format
Measurements and Applications All-weather images of ocean, ice and land surfaces. Monitoring of coastal zones, polar ice, sea state, geological features, vegetation (including forests), land surface processes, hydrology.
Resolution Summary 30 m
[Best Resolution: 30m]
Swath Summary 100 km
[Max Swath: 100 km]
Accuracy Summary Landscape topography: 3 m, Bathymetry: 0.3 m, Sea ice type: 3 classes
Waveband Summary Microwave: 5.3 GHz, C band, VV polarisation, bandwidth 15.5 ± 0.06 MHz
MW (~0.1 cm - ~100 cm)
C-Band (8 - 4 GHz)
Instrument Measurements
Measurements Overview
CategoryParameter
Ice sheet topographySea-ice sheet topography
Landscape topographyLand surface topography
Multi-purpose imagery (land)Land surface imagery
Multi-purpose imagery (ocean)Ocean imagery and water leaving spectral radiance
Ocean topography/currentsBathymetry
Ocean wave height and spectrumSignificant wave height
Sea ice cover, edge and thicknessSea-ice cover
Sea-ice type
Glacier motion
Snow cover, edge and depthSnow cover
Soil moistureSoil moisture at the surface
VegetationVegetation type
Thematic Links Global Climate Observing System Essential Climate Variables (GCOS ECVs)
ECVDescriptionProduct(s)ECV Inventory 3.0 Record(s)
Ocean Colour click here click here search ECV Inventory records
Sea Ice click here click here search ECV Inventory records
Sea State click here click here search ECV Inventory records
Snow click here click here search ECV Inventory records
Soil Moisture click here click here search ECV Inventory records
Instrument Missions
ERS-1 - European Remote Sensing satellite - 1 (1991 - 2000)
ERS-2 - European Remote Sensing satellite - 2 (1995 - 2011)