terrain correction is an orthorectification technique which correct the layover and foreshortening effects inherent in SAR imagery.SAR Terrain Correction makes your SAR data closer to real world geometry and enables overlaying layers from other sources correctly.
The Terrain Correction Operator will produce an orthorectified product in the WGS 84 geographic coordinates. The Range Doppler orthorectification method [1] is implemented for geocoding SAR images from a single 2D raster radar geometry. It uses available orbit state vector information in the metadata or external precise orbit, the radar timing annotations, the slant to ground range conversion parameters together with the reference DEM data to derive the precise geolocation information.
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