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SET PHASE

        CLIC\SET PHASE [ABSOLUTE|RELATIVE] [ANTENNA|BASELINE]
        [INTERNAL|EXTERNAL] [ATMOSPHERE|NOATMOSPHERE] [FILE|NOFILE]
        [WVR|NOWVR] [TOTAL|NOTOTAL]
        [DEGREES|RADIANS] [JUMPY|CONTINUOUS]

    CLIC\SET PHASE ABSOLUTE|RELATIVE

        This command decides whether the phase calibration is applied or not
        to the data for plotting and writing the final UV table,  in  subse-
        quent  PLOT  and TABLE commands. ABSOLUTE means do not use the phase
        calibration determined by the SOLVE PHASE  command,  RELATIVE  means
        apply it.

    CLIC\SET PHASE INTERNAL|EXTERNAL

        Switch between two modes of phase calibration.

        INTERNAL  is  the  standard  mode.  In EXTERNAL mode the calibration
        curve from another receiver may be used (as stored  by  STORE  PHASE
        /RECEIVER  r);  on  the top of this a second order calibration curve
        may be determined (using SOLVE PHASE) and stored as usual. This does
        not erase any INTERNAL calibration curve previously stored.

        For example, using receiver 2:

        SET  PHASE  INTERNAL  RELATIVE:  use the phase curve determined from
        Rec. 2 only

        SET PHASE EXTERNAL ABSOLUTE: use the phase curve from Rec.  1  only,
        as stored with STORE PHASE /RECEIVER 1

        SET  PHASE EXTERNAL RELATIVE: use the phase curve from Rec 2, deter-
        mined on top of the phase curve Rec. 1, by  using  SOLVE  PHASE  and
        STORE PHASE with SET PHASE EXTERNAL in effect.

        SET PHASE INTERNAL  is recommended for Receiver 1,  SET PHASE EXTER-
        NAL for Receiver 2.

    CLIC\SET PHASE ANTENNA|BASELINE

        Switch between Antenna-based and Baseline-based phase  calibrations.
        This switch will be active for SOLVE PHASE (calibration curve deter-
        mination), STORE PHASE (calibration curve  storing  operation),  and
        SET  PHASE RELATIVE (application).  Both baseline-based and antenna-
        based calibration curves may be stored alongside in the data header,
        independently of each other. SET PHASE ANTENNA is recommended.

    CLIC\SET PHASE ATMOSPHERE|NOATMOSPHERE

        Force CLIC to use or not the real-time atmospheric phase correction.
        The atmospheric phase correction is based on  monitoring  the  atmo-
        sphere water vapor emission using either the total power measured by
        the 1.3 mm receivers or the 22 GHz water vapor  radiometers.  It  is
        applied in real-time to each dump before computing the scan-averaged
        quantities (spectra and continuum); these are further corrected  for
        the  average  atmospheric phase, hence leading to phases essentially
        not modified, but to improved amplitudes (correction of the decorre-
        lation).  This  phase-corrected  scan-averaged  dump will be used by
        CLIC after SET PHASE ATM has been issued.

        The phase correction will NOT be used if it has  been  declared  in-
        valid  for  a given scan, using the command STORE CORRECTION, except
        if SET PHASE NOFILE is in effect. See these commands.

        Note that the continuum 1 sec dumps are not corrected in  real-time,
        and  are  therefore  not  affected  by the SET PHASE ATM command. To
        avoid any confusion, SET PHASE ATM forces SET AVER SCAN.

    CLIC\SET PHASE FILE|NOFILE

        Turn ON of OFF the effect of the STORE CORRECTION command.

        If SET PHASE ATMOSPHERE FILE, the information on the validity of the
        phase  correction declared by STORE CORRECTION will be used, and the
        phase correction will thsu be done only on scans validated by  STORE
        CORRECTION.

        If  SET  PHASE ATMOSPHERE NOFILE, this information will be bypassed,
        and the phase correction will be done for all scans.

    CLIC\SET PHASE WVR|NOWVR

        Switch ON or OFF the off-line atmospheric phase correction based  on
        the  WVR  data. All data (individual as well as scan-averaged dumps)
        are affected. It is necessary to have run the  WVR  command  before.
        SET PHASE WVR forces SET PHASE NOTOTAL.

    CLIC\SET PHASE TOTAL|NOTOTAL

        Switch  ON or OFF the off-line atmospheric phase correction based on
        the 1.3 mm total power monitoring. All data (individual as  well  as
        scan-averaged  dumps)  are affected. It is necessary to have run the
        MONITOR command before. SET PHASE TOTAL forces SET PHASE NOWVR.

    CLIC\SET PHASE DEGREE|RADIANS

        Select the unit in which the phases are plotted.

    CLIC\SET PHASE JUMPY|CONTINUOUS n

        Selects the way phases are determined.  With argument JUMPY  no  at-
        tempt  is  made  to  suppress 2pi jumps: the determination is always
        [-pi,pi].  With argument "CONTINUOUS n", the phase jumps are limited
        to  +/-  pi, that is the phase is always chosen in the range [previ-
        ous-pi,previous+pi], n being the number of points averaged  together
        to estimate the 'previous' phase (default is 1, higher values are to
        be used in noisy cases).


Gildas manager 2018-02-24