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Basic Information on wvcal
Purpose: Estimate antenna gains from WVR measurements.
Categories: calibration, atmospheric phase
WVCAL estimates atmospheric phase corrections
from WVR measurements. The WVR data are interpolated
to the integration times of the interferometer data
and written into the gains item.
Name of input uv-data file. No default.
Name of input WVR data files. WVCAL looks for filenames
wvrN, where N=1,nants. The phase correction is set to zero
if no WVR data file is found for any antenna. No default.
`pgain' gives the antenna phase change with WVR path length in
in units of radians/millimeter. Default = 0. calculates
-2pi/lambda radians/millimeter from the observing frequency.
The length of time, in minutes, of a gain solution.
Default uses the interferometer integration interval,
but use a larger value in cases of poor signal to noise, or
if the atmosphere and instrument is fairly stable.
time offset in seconds for each antenna.
Name of output uv-data file. The default is to write the gain
corrections into the input visibility file.
PGPLOT device to plot mmpath versus airmass. Default is no plot.
airmass range (min,max) to use.
mmpath range (min,max) to use.
Extra processing options. Several can be given, separated by
commas. Minimum match is used. Possible values are:
filter Filter out data more than 2 sigma from the mean path.
scale Scale the measured path by the slope for each antenna.
subtract Subtract the average for each antenna.