[daip] [!12546]: AIPS - Don't understand CLCAL interpolation

[Eric Greisen]

Eric Greisen updated #12546
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Don't understand CLCAL interpolation
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           Ticket ID: 12546
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/12546
                Name: Michael Bietenholz
       Email address: mbieten at yorku.ca
             Creator: User
          Department: AIPS Data Reduction
       Staff (Owner): Eric Greisen
                Type: Issue
              Status: Open
            Priority: Default
                 SLA: NRAO E2E
      Template group: Default
             Created: 08 August 2018 07:45 PM
             Updated: 09 August 2018 11:21 PM
           Reply due: 13 August 2018 03:45 PM (3d 16h 23m)
      Resolution due: 05 May 2021 12:00 AM (999d 0h 38m)

I can't say that I do either - it ignores rate when interpolating delayand simply does linear interpolation of rates and delays.  But forphase the code is: IF  (GOOD1)  PH1 = ATAN2 (SNRECR(IPNTS1),*                SNRECR(IPNTC1)) + *   SNRECR(IPNTR1) *(TIME - TIME1) * FRQFAC(LOOPIF) IF  (GOOD2)  PH2 = ATAN2 (SNRECR(IPNTS2), *             SNRECR(IPNTC2)) + *   SNRECR(IPNTR2) * (TIME - TIME2) * FRQFAC(LOOPIF)where the 3rd line of each is the rate times the time difference timesa frequency.So it uses rate only to predict phase.  I don't quite understand thatbut Bill Cotton wrote it (I assume) so I have not done anything to it.Eric


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