GISMO (Global Ice Sheet Mapping Orbiter) is a concept for a spaceborne radar system designed tomeasure the surface and basal topography of terrestrial ice sheets and to determine the physical properties of the glacier bed. The technoogy concept employed VHF and P-band interferometric radars using a clutter rejection technique for measureing the surface and bottom topographies. 2006 May 23 data comprise the following files: seg#_thickness 32bit float binary of thickness data seg#_thickness.geo.tif GeoTIFF of thickness data seg#_thickness.gif Visual graphic of thickness data seg#_image 32bit float binary of image data seg#_image.geo.tif GeoTIFF of image data seg#_image.gif Visual graphic of thickness data seg#.hdr header file for thickness and image data seg#_0_0.pos latitude, longitude, aircraft altitude 2007 Sept 10 450MHz data comprise the following files: seg#_inten 32 bit float binary of intensity data seg#_0_0.azcom.par header file for azimuth compressed data seg#_0_0.azcom.nadir latitude, longitude of first pixel in each line, aircraft altitude and roll angle in degrees for azimuth compressed data seg#_surface_base.profile estimate (may not be exact in some areas) of the surface and the base profile seg#_0_0.pos latitude, longitude, aircraft altitude 2007 Sept 12 150MHz data comprise the following files: seg#_inten 32 bit float binary of intensity data seg#_0_0.azcom.par header file for azimuth compressed data seg#_0_0.azcom.nadir latitude, longitude of first pixel in each line, aircraft altitude and roll angle in degrees for azimuth compressed data seg#_surface_base.profile estimate (may not be exact in some areas) of the surface and the base profile seg#_thickness 32bit float binary of thickness data seg#_thickness.geo.tif GeoTIFF of thickness data seg#.thickness.tiff Visual graphic of thickness data seg#_image 32bit float binary of image data seg#_image.geo.tif GeoTIFF of image data seg#.hdr header file for thickness and image data seg#_0_0.pos latitude, longitude, aircraft altitude 2008 low elevation data comprise the following files: seg#_thickness 32bit float binary of thickness data seg#_thickness.geo.tif GeoTIFF of thickness data seg#.thickness.tiff Visual graphic of thickness data seg#_image 32bit float binary of image data seg#_image.geo.tif GeoTIFF of image data seg#_inten.tif Intensity graphic (when applicable) seg#.hdr header file for thickness and image data seg#_0_0.pos latitude, longitude, aircraft altitude 2008 high elevation data comprise the following files: seg#_elevation 32bit float binary of elevation data seg#_elevation.geo.tif GeoTIFF of elevation data seg#.elevation.tiff Visual graphic of elevation data seg#_image 32bit float binary of image data seg#_image.geo.tif GeoTIFF of image data seg#.hdr header file for thickness and image data seg#_base_inten 32 bit float binary of base intensity data seg#_0_0.azcom.par header file for azimuth compressed data seg#_0_0.azcom.nadir latitude, longitude of first pixel in each line, aircraft altitude and roll angle in degrees for azimuth compressed data seg#_surface_base.profile estimate (may not be exact in some areas) of the surface and the base profile