Alaska Orthorectified Radar Intensity Image - USGS National Map 3DEP Downloadable
          Data Collection
These data are orthorectified radar intensity images (ORI) derived from
        interferometric synthetic aperture radar (ifsar) data. An ORI is a high-resolution image
        derived from ifsar which has geometric distortions removed. Unlike optical imagery, ifsar
        can be collected in cloudy conditions. The …