Data Set Overview : High resolution radar map compiled from measurements made between 1981 and 1984 with the 70 cm wavelength radar at Arecibo Observatory. The data have resolutions ranging from 2 to 5 kilometers. The pixel spacing is 0.1 degrees in latitude and longitude. The point at line 1000 and sample 1000 corresponds to 0 degrees latitude and 0 degrees longitude. The pixel values are scaled to represent 20 * log10 (backscattered power). Observed power has been corrected for antenna beam, scattering area and scattering law. Observed power of 1000, which is the lunar average, thus has a value of 60 in the data set. Radar was transmitted in left-hand circular polarization, and both right-hand circular polarization (i.e. polarized) and left-hand circular polarization (i.e. depolarized) echoes were received.   Processing Level Id : 4 Software Flag : N Processing Start Time : 1981 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 : UNK   Source Instrument Parameters : Instrument Host ID : ARCB 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 ------ Radar pulses were transmitted using the high power 430 MHz transmitter at Arecibo Observatory. See THOMPSON1987 for details.   Calibration Standard -------------------- NOT APPLICABLE   Wavelength Calibration ---------------------- Transmitter frequency is calibrated with a hydrogen maser.   Processing : N/A

Overview : The mosaic consists of 20 or more sets of data; some mosaic seams exist.