Table 2. The characteristics of 6 SAR imagery analysis tools

Name Company Country Utilization Access
HyP3 ASF/DAAC USA • Radiometric terrain correction• Interferometric SAR• Change detection A limited amount of processing for a user per month
GAMMA GAMMA Switzer-land • DEM• Displacement maps• Land use maps Commercial
SNAP S1TBX ESA Europe • Calibration• Speckle filtering• Co-registration• Orthorectification• Mosaicking• Data conversion• Polarimetry• Interferometry Free
ENVI SARscape L3Harris USA • Flood mapping• Dem extraction• Change detection• Displacement map• Ship detection• Persistent scatters• Image geocoding Commercial
ISCE JPL, Stanford Univ. USA • Earthquakes• Volcanism• Mountain building• Micro-plate tectonics Members only
PG-STEAMER Pixoneer South Korea • Land cover map• Disaster analysis• Terrain information Application dependent; Free for non-profit
SAR, synthetic aperture radar; ASF, Alaska Satellite Facility; DAAC, Distributed Active Archive Center; HyP3, Hybrid Pluggable Processing Pipeline; DEM, Digital Elevation Model; SNAP, SeNtinel's Application Platform; S1TBX, Sentinel-1 ToolBoX, ENVI, Environment for Visualizing Images; ISCE, InSAR Scientific Computing Environment; JPL, Jet Propulsion Laboratory; PG-STEAMER, Pixoneer Geomatics Software Tools for Exploitation And Management of Earth Resources.