Line data    Source code

       1             : //# FJones.h:  Declaration of Ionospheric corrections
       2             : //# Copyright (C) 1996,1997,2000,2001,2002,2003,2011,2014
       3             : //# Associated Universities, Inc. Washington DC, USA.
       4             : //#
       5             : //# This library is free software; you can redistribute it and/or modify it
       6             : //# under the terms of the GNU Library General Public License as published by
       7             : //# the Free Software Foundation; either version 2 of the License, or (at your
       8             : //# option) any later version.
       9             : //#
      10             : //# This library is distributed in the hope that it will be useful, but WITHOUT
      11             : //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
      12             : //# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
      13             : //# License for more details.
      14             : //#
      15             : //# You should have received a copy of the GNU Library General Public License
      16             : //# along with this library; if not, write to the Free Software Foundation,
      17             : //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
      18             : //#
      19             : //# Correspondence concerning AIPS++ should be adressed as follows:
      20             : //#        Internet email: casa-feedback@nrao.edu.
      21             : //#        Postal address: AIPS++ Project Office
      22             : //#                        National Radio Astronomy Observatory
      23             : //#                        520 Edgemont Road
      24             : //#                        Charlottesville, VA 22903-2475 USA
      25             : //#
      26             : //#
      27             : 
      28             : #ifndef SYNTHESIS_FJONES_H
      29             : #define SYNTHESIS_FJONES_H
      30             : 
      31             : #include <casacore/casa/aips.h>
      32             : #include <casacore/casa/Containers/Record.h>
      33             : #include <casacore/casa/BasicSL/Complex.h>
      34             : #include <synthesis/MeasurementComponents/VisCal.h>
      35             : #include <synthesis/MeasurementComponents/SolvableVisCal.h>
      36             : //#include <synthesis/MeasurementComponents/CalCorruptor.h>
      37             : 
      38             : #include <casacore/measures/Measures/EarthMagneticMachine.h>
      39             : 
      40             : namespace casa { //# NAMESPACE CASA - BEGIN
      41             : 
      42             : class FJones : public SolvableVisJones {
      43             : public:
      44             : 
      45             :   // Constructor
      46             :   FJones(VisSet& vs);
      47             :   FJones(casacore::String msname,casacore::Int MSnAnt,casacore::Int MSnSpw);
      48             :   FJones(const MSMetaInfoForCal& msmc);
      49             : 
      50             :   virtual ~FJones();
      51             : 
      52             :   // Return the type enum
      53           0 :   virtual Type type() { return VisCal::F; };
      54             : 
      55             :   // Return type name as string
      56           2 :   virtual casacore::String typeName()     { return "F Jones"; };
      57           0 :   virtual casacore::String longTypeName() { return "F Jones (Ionosphere)"; };
      58             : 
      59             :   // Report current Jones type (circ=diag, lin=general)
      60           0 :   Jones::JonesType jonesType() { return pjonestype_; };
      61             : 
      62             :   // Par is freq-INdep, but matrix is freq-dep
      63           2 :   virtual casacore::Bool freqDepPar() { return false; };
      64           0 :   virtual casacore::Bool freqDepMat() { return true; };
      65             : 
      66             :   // We have casacore::Float parameters
      67         169 :   virtual VisCalEnum::VCParType parType() { return VisCalEnum::REAL; };
      68             : 
      69             :   // Local setapply to enforce calwt=F and spwmap=[0] for FJones
      70             :   virtual void setApply(const casacore::Record& apply);
      71             :   using SolvableVisJones::setApply;
      72             : 
      73             :   // Report apply-related info
      74             :   casacore::String applyinfo();
      75             : 
      76             :   // Local specializations for TEC generation
      77             :   virtual void setSpecify(const casacore::Record& specify);
      78             :   virtual void specify(const casacore::Record& specify);
      79             : 
      80             : protected:
      81             : 
      82             :   // FJones has one casacore::Float par per ant
      83           8 :   virtual casacore::Int nPar() { return 1; };
      84             : 
      85             :   // Jones matrix elements are NOT trivial
      86           0 :   virtual casacore::Bool trivialJonesElem() { return false; };
      87             : 
      88             :   // Access to z.a. data
      89        1745 :   casacore::Vector<casacore::Double>& za() { return za_; };
      90             : 
      91             :   // Detect pol basis and some geometry
      92             :   virtual void syncMeta(const VisBuffer& vb);
      93             :   virtual void syncMeta2(const vi::VisBuffer2& vb);
      94             : 
      95             :   // Calculate parameters (in this case, the z.a.)
      96             :   virtual void calcPar();
      97             : 
      98             :   // Calculate the FJones matrix for all ants
      99             :   virtual void calcAllJones();
     100             : 
     101             : private:
     102             : 
     103             :   // TEC specify/retrieval mode
     104             :   casacore::String tectype_;
     105             : 
     106             :   // Field calculation components
     107             :   casacore::MeasFrame mframe_;
     108             :   casacore::EarthMagneticMachine *emm_;
     109             : 
     110             :   // Fiducial ionosphere height
     111             :   casacore::Quantity ionhgt_;
     112             : 
     113             :   // TEC image filename
     114             :   casacore::String tecimname_;
     115             : 
     116             :   // zenith angle per antenna
     117             :   casacore::Vector<casacore::Double> za_;
     118             : 
     119             :   // The magnetic field
     120             :   casacore::Vector<casacore::Double> BlosG_;
     121             : 
     122             :   // Units
     123             :   casacore::Double radper_;
     124             : 
     125             :   // Lin (general) or Circ (diag)
     126             :   Jones::JonesType pjonestype_;
     127             : 
     128             :   // Measures geometry
     129             :   casacore::MDirection phasedir_p;
     130             :   casacore::ROScalarMeasColumn<casacore::MPosition> antpos_p;
     131             : 
     132             : };
     133             : 
     134             : } //# NAMESPACE CASA - END
     135             : 
     136             : #endif
     137             :