| Description: | The MWR operating program was upgraded to version 3.28 on 3 February 1999. This version
includes a beam width correction as well as providing the capability to automatically level
the elevation mirror (that is, to automatically detect and correct offsets in the
elevation angle stepper motor position.)
The improvement in the quality of the tip curves resulting from the auto-
leveling has been dramatic: differences in the brightness temperatures at
3 airmasses (19.5 and 160.5 degrees) have been reduced from +/- 5 K to
+/- 0.5 K. In order to take full advantage of this improvement to detect and reject
cloudy tip curves, the minimum value of the goodness-of-fit coefficient for a valid tip curve
has been increased from 0.995 to 0.998. |