THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – MEASUREMENT INSTRUMENTS
Measurements > Land >
Multi-purpose imagery (land) >
Surface Coherent Change Detection


Measurement Definition*: Techniques that exploit the changes between two or several radar images of the same scene, in conditions where there is measurable coherence between at least a fraction of a pair of images, to detect subtle differences in the surface condition that can be related to sub-wavelength motions, surface properties changes or sub-pixel disturbances.
InstrumentStatus/
Accuracy
Instrument DescriptionMeasurement TechnologyTimeline
SAR (RADARSAT-2)
Synthetic Aperture Radar (SAR) C band
Operational
All-weather images of ocean, ice and land surfaces. Used for monitoring of coastal zones, polar ice, sea ice, sea state, geological features, vegetation and land surface processes.n/a
SAR-L
L-Band Synthetic Aperture Radar
Operational
Land, ocean, emergencies, soil moisture, interferometry, others.n/a
SAR (RCM)
Synthetic Aperture Radar (SAR) C band
Being developed
All-weather, C-band data to support ecosystem monitoring, maritime surveillance and disaster management.n/a
L-band SAR (NISAR)
L-band Synthetic Aperture Radar (SAR) (NISAR)
Approved
3-year mission to study solid earth deformation (earthquakes, volcanoes, landslides), changes in ice (glaciers, sea ice) and changes in vegetation biomassn/a
* Description adapted from WMO.
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