AIPS HELP file for INTERPOL in 31DEC18
As of Fri Oct 19 18:51:50 2018
Type: Adverb (String*4)
Use: Standard data selection adverb; used to specify the
interpolation function to be applied to the gain table:
' ' = 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
'CUBE' = As AMBG but fit third order polynomial to phases and
This adverb is only relevant when the data being operated
on has an associated gain table.
Null value: ' ' see above.