Data Set Overview
  =================
 
    This archive contains DEMs acquired in September 2003 by the Wallops/
    GSFC Airborne Topographic Mapper, a scanning laser altimeter. The data
    were acquired at three locations in Nevada: Sedan crater, in the
    northern part of Yucca Flats, Schooner crater, in the northwestern part
    of the Nevada Test Site, and Buckboard mesa (Danny Boy crater), in the
    western part of the Nevada Test Site.
 
    The data consist of three vector data files and three DEM flat files,
    each with an accompanying detached PDS label. The three DEM flat files
    also have detached ENVI headers containing geographic data. The vector
    files list the longitude in degrees, the latititude in degrees, and the
    elevation in meters above datum as floating point values. The vector
    data were rasterized with ENVI to 2x2 m spacing and projected to UTM
    coordinates. In the resultant DEM flat files, the pixels are floating
    point values in meters above the datum.
 
    For the vector data:
      horizontal datum = WGS84 Ellipsoid
      vertical datum = ITRF94
    For the raster data:
      horizontal datum = WGS84 Ellipsoid
      vertical datum = NAD27
 
    All three datasets were generated from multiple flight lines.
 
    Please see [FARRETAL2004] for more information.

This data set underwent external peer review from January 21, 2008
        through February 18, 2008.