Content-type: text/html Manpage of uvcoher

uvcoher

Section: User Commands (1)
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NAME

uvcoher - Copy and average a uv dataset.  

PERSON RESPONSIBLE

pjt  

CATEGORIES

uv analysis  

DESCRIPTION

UVCOHER performs time averaging,and reports on the measured coherence in the selected line= Coherence is defined as the ratio between the amplitude of vector average and the average scalar amplitude. This number should be 1 for perfect noiseless data and 0 for uncorrelated noisy data.

Currently it prints out a simple table, i,j,baseline,uvd,rmspath,coherence

See also: UVDECOR, UVAVER  

PARAMETERS

vis
The name of the input uv data sets. Several can be given (wild cards are supported). No default.
select
The normal uv selection commands. The default is copy everything.
line
The normal uv linetype in the form:
  line,nchan,start,width,step
The default is all channels (or all wide channels if there are no spectral channels). The output will consist of only spectral or wideband data (but not both). NOTE; This program requires you to select 1 channel.
stokes
If a value is given, uvcoher converts the input into the required polarizations before writing to the output. Default is to copy across the polarizations present in the input files.
interval
Time averaging interval, in minutes. The default is 10. Note: No time averaging makes no sense in this program
options
This gives extra processing options. Several options can be given, each separated by commas. They may be abbreviated to the minimum needed to avoid ambiguity. Possible options are:
   nocal       Do not apply the gains file. By default, UVCOHER
               applies the gains file in copying the data.
   nopass      Do not apply bandpass corrections. By default,
               UVCOHER corrects for the bandpass shape if the
               required information is available.
   nopol       Do not apply polarizatiopn corrections. By default
               UVCOHER corrects for polarization corss-talk.
   relax       Normally UVCOHER discards a correlation record if
               all the correlations are bad. This option causes
               UVCOHER to retain all records.


 

Index

NAME
PERSON RESPONSIBLE
CATEGORIES
DESCRIPTION
PARAMETERS

This document was created by man2html, using the manual pages.
Time: 18:35:38 GMT, July 05, 2011