Line data    Source code

       1             : //# DBeamSkyJones.h: Definitions of interface for DBeamSkyJones 
       2             : //# Copyright (C) 1996,1997,1998,2000
       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             : //# $Id$
      28             : 
      29             : #ifndef SYNTHESIS_DBEAMSKYJONES_H
      30             : #define SYNTHESIS_DBEAMSKYJONES_H
      31             : 
      32             : #include <casacore/casa/aips.h>
      33             : #include <casacore/measures/Measures/Stokes.h>
      34             : #include <synthesis/TransformMachines/BeamSkyJones.h>
      35             : 
      36             : namespace casa { //# NAMESPACE CASA - BEGIN
      37             : 
      38             : //#forward
      39             : class SkyModel;
      40             : 
      41             : //# Need forward declaration for Solve in the Jones Matrices
      42             : class SkyEquation;
      43             : 
      44             : // <summary> Model the polarization leakage in the Sky Jones Matrices </summary>
      45             : 
      46             : // <use visibility=export>
      47             : 
      48             : // <reviewed reviewer="" date="" tests="" demos="">
      49             : 
      50             : // <prerequisite>
      51             : // <li> <linkto class="SkyEquation">SkyEquation</linkto> class
      52             : // <li> <linkto class="BeamSkyJones">BeamSkyJones</linkto> class
      53             : // </prerequisite>
      54             : //
      55             : // <etymology>
      56             : // DBeam = sky-position-dependent polarization leakage, 
      57             : // SkyJones = Sky-based Jones matrices.
      58             : // This class only deals with the off-diagonal elements of the
      59             : // primary beam jones matrices.
      60             : // </etymology>
      61             : //
      62             : // <synopsis> 
      63             : // </synopsis> 
      64             : //
      65             : // <example>
      66             : // <srcblock>
      67             : // </srcblock>
      68             : // </example>
      69             : //
      70             : //
      71             : // <motivation>
      72             : // To deal with the polarization leakage beam (mainly casacore::Stokes I into
      73             : // polarization visibilities).  The main primary beam response, ie,
      74             : // the diagonal Jones matrix elements, are handled by VPSkyJones.
      75             : // The motivation for this split is differing storage requirements
      76             : // for the unerlying PBMath types, and different methods available
      77             : // to VPSkyJones and DBeamSkyJones.
      78             : // </motivation>
      79             : //
      80             : // <todo asof="98/09/01">
      81             : // <li> Waiting for PBMath2D, which requires an HGEOM-like utility.
      82             : //      We can do nothing here until this is in place.
      83             : // <li> Need to check the history that PB has been applied before applying DB
      84             : //      (or at least provide for some sort of checking.)
      85             : // <li> Details of APPLY procedure may need to be modified
      86             : // </todo>
      87             : 
      88             : class DBeamSkyJones : public BeamSkyJones {
      89             : 
      90             : public:
      91             : 
      92             :   DBeamSkyJones(casacore::MeasurementSet& ms,            
      93             :                 casacore::Bool makeDefaultPBsFromMS = true,
      94             :                 const casacore::Quantity &parallacticAngleIncrement = casacore::Quantity(5.0, "deg"),
      95             :                 BeamSquint::SquintType doSquint = BeamSquint::NONE);
      96             : 
      97             :   // Note that DBeamSkyJones uses BeamSkyJones' "apply" methods
      98             : 
      99             :   // return SkyJones type
     100           0 :   Type type() {return SkyJones::D;};
     101             : 
     102             :   // Is this solveable?
     103           0 :   virtual casacore::Bool isSolveable() {return false;};
     104             : 
     105             : protected:
     106             : 
     107             : private:    
     108             : 
     109             : };
     110             :  
     111             : 
     112             : } //# NAMESPACE CASA - END
     113             : 
     114             : #endif
     115             :