; INTERPOL ;--------------------------------------------------------------- ;! specifies the type of averaging done on the complex gains ;# ADVERB CALIBRATION ;----------------------------------------------------------------------- ;; Copyright (C) 1995, 2001, 2006 ;; Associated Universities, Inc. Washington DC, USA. ;; ;; This program is free software; you can redistribute it and/or ;; modify it under the terms of the GNU General Public License as ;; published by the Free Software Foundation; either version 2 of ;; the License, or (at your option) any later version. ;; ;; This program is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;; GNU General Public License for more details. ;; ;; You should have received a copy of the GNU General Public ;; License along with this program; if not, write to the Free ;; Software Foundation, Inc., 675 Massachusetts Ave, Cambridge, ;; MA 02139, USA. ;; ;; Correspondence concerning AIPS should be addressed as follows: ;; Internet email: aipsmail@nrao.edu. ;; Postal address: AIPS Project Office ;; National Radio Astronomy Observatory ;; 520 Edgemont Road ;; Charlottesville, VA 22903-2475 USA ;----------------------------------------------------------------------- INTERPOL LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC ---------------------------------------------------------------- INTERPOL Type: Adverb (String*4) Use: Standard data selection adverb; used to specify the interpolation function to be applied to the gain table: In CLCAL: ' ' = linear vector interpolation with no SN smoothing. '2PT ' = linear vector interpolation with no SN smoothing. 'SELF' = do 2PT but only using SN entries from the same source. (New mode starting 20 April 2004.) 'SELN' = Use only SN solution from same source which is closest in time. (This mode was called SELF before 20 April 2004.) 'POLY' = Fit a polynomial to the SN rates and delays. Use the integral of the rate polynomial for the phases. 'SIMP' = Simple linear phase connection between SN phase entries, assumes phase difference less than 180 deg. 'AMBG' = Linear phase connection using rates to resolve phase ambiguities. 'CUBE' = As AMBG but fit third order polynomial to phases and rates. This adverb is only relevant when the data being operated on has an associated gain table. Null value: ' ' see above. ----------------------------------------------------------------