Types of Synthetic Aperture Radar (SAR) Products at ASF

ASF product types and processing levels

Processing TypeProcessing LevelImage TypeProduct DescriptionOpen-source softwareCommercial software
Raw DataL0, L1.0, RAWUnfocusedUnprocessed signal data. Requires a SAR processor to be visualized.ISCEENVI SARscape
GAMMA
Single Look Complex (SLC)L1.1, SLCFocused (single look); has speckleContains amplitude and phase values. Retains slant-range geometry.ASF HyP3
Sentinel-1 Toolbox
PolSARpro
ENVI SARscape
GAMMA
AmplitudeL1, L1.5, GRD (Ground Range Detected)Focused (multilooked); reduced speckleCan be visualized. Contains amplitude values only. Retains slant-range geometry. Projected to ground range coordinates.ASF HyP3
Sentinel-1 Toolbox
ASF MapReady
ENVI SARscape
GAMMA
Corrected amplitudeGeoTIFFGIS-compatibleImage has had georeferencing applied.QGISArcGIS
Corrected amplitudeRadiometric Terrain Correction (RTC)GIS-compatibleImage has had radiometric and terrain correction applied.QGISArcGIS

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