Data Set Overview
    =================
      This data set consists of a series of images of the Moon
      showing radar scaled echo power.  Each covers about 400 square
      kilometers of the lunar surface, and contains two co-registered
      images.  Transmitted signal was right-circular polarization,
      images are therefore left-circular and right-circular.  Images
      are projected as Mercator maps for latitudes less than 16
      degrees, Lambert (small-angle cone) between 16 and 48 degrees,
      Lambert (large-angle cone) between 48 and 80 degrees, and polar
      stereographic between 80 and 90 degrees.
 
 
      Processing Level Id            : 4
      Software Flag                  : N
      Processing Start Time          : 1968
      Processing Stop Time           : 1990
 
 
    Parameters
    ==========
 
      Data Set Parameter 'RADAR SCALED ECHO POWER'
      --------------------------------------------
        Power of the backscattered echo, received at antenna scaled
        using some procedure, e.g., scaled to fit within an output
        dynamic range such as an integer value.
 
        Data Set Parameter Name        : RADAR SCALED ECHO POWER
        Data Set Parameter Unit        : DIMENSIONLESS
        Sampling Parameter Name        : PIXEL
        Sampling Parameter Unit        : N/A
        Minimum Sampling Parameter     : N/A
        Maximum Sampling Parameter     : N/A
        Sampling Parameter Resolution  : N/A
        Sampling Parameter Interval    : N/A
        Minimum Available Sampling Int : N/A
        Noise Level                    : N/A
 
 
    Source Instrument Parameters
    ============================
      Instrument Host ID              : HSTK
      Data Set Parameter Name         : RADAR SCALED ECHO POWER
      Instrument Parameter Name       : RADAR ECHO POWER
      Important Instrument Parameters : 1
 
 
    Measurement Information
    =======================
 
      Atmospheric Conditions
      ----------------------
        NOT APPLICABLE
 
 
      Source
      ------
        The radar observations were made using the Haystack radar and
        post-processing system.  See ZISKETAL1974 for details.
 
 
      Calibration Standard
      --------------------
        NOT APPLICABLE
 
 
      Wavelength Calibration
      ----------------------
        The transmitter frequency is calibrated with a hydrogen
        maser.
 
 
    Processing
    ==========
      N/A

Overview
    ========
      Images have been corrected for radar system parameters, lunar
      surface projection parameters, and mean lunar scattering laws.
      Data in different images should therefore depend on lunar
      surface scattering properties only, except for variations of
      radar echo power as a function of local surface tilt.