This archive contains digital
  elevation models (DEMs) of the lunar south pole.
 
  SOUTH_POLE_MOSAIC.IMG is a map of a region approximately 1200 x 300
  km in area at the lunar south pole. Elevation data at 200 pixels per
  degree of latitude (~150 m spatial resolution) were obtained with
  radar interferometry from the Goldstone Solar System Radar in
  October 1997, as described in MARGOTETAL2000. Delay-Doppler radar
  images were converted to latitude and longitude using the lunar spin
  state and prime meridian as specified by the DE405 planetary
  ephemeris. Elevations are given in meters with respect to a
  1737.4 km sphere. Absolute elevations were obtained by comparison
  with Lunar Reconnaissance Orbiter laser altimetry data (LOLA,
  NEUMANN2010); a single elevation offset was applied to the radar DEM
  to minimize (in a least square sense) the differences in elevations
  with ~300,000 LOLA RDR points throughout the region. We checked for
  horizontal offsets between the LOLA points, which were produced
  using the DE421 ephemeris; the two datasets match horizontally to
  <100 m. No corrections for large-scale slopes in the elevation
  offsets were applied. Geocoding corrections have not been applied to
  this data set, so residual errors due to foreshortening remain, with
  the largest errors (300 m) in areas with elevations farthest from
  the 1737.4 km reference radius. The median geocoding error is
  ~100 m. Elevation errors due to noise in the interferometric phase
  estimates are also of order 100 m. In small, isolated areas (<1% of
  the map), larger errors due to incorrect phase unwrapping remain.
  The DEM is formatted as a 8000 x 2000 array in a polar stereographic
  projection, with the south pole at (x,y) = (4000.5,900.5) (one-based
  convention). Each cell contains either an elevation measurement or a
  null value (set to -25000 m). Null values represent areas that were
  either shadowed from the radar, provided too weak an echo for a
  reliable elevation measurement, were not simply connected to the
  rest of the map, or where the data are simply missing.

This data set underwent external peer review from January to April
  2012.