TsysGainCal.h

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00001 //# TsysGainCal.h: Declaration of Tsys calibration
00002 //# Copyright (C) 1996,1997,2000,2001,2002,2003
00003 //# Associated Universities, Inc. Washington DC, USA.
00004 //#
00005 //# This library is free software; you can redistribute it and/or modify it
00006 //# under the terms of the GNU Library General Public License as published by
00007 //# the Free Software Foundation; either version 2 of the License, or (at your
00008 //# option) any later version.
00009 //#
00010 //# This library is distributed in the hope that it will be useful, but WITHOUT
00011 //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00012 //# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
00013 //# License for more details.
00014 //#
00015 //# You should have received a copy of the GNU Library General Public License
00016 //# along with this library; if not, write to the Free Software Foundation,
00017 //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
00018 //#
00019 //# Correspondence concerning AIPS++ should be adressed as follows:
00020 //#        Internet email: aips2-request@nrao.edu.
00021 //#        Postal address: AIPS++ Project Office
00022 //#                        National Radio Astronomy Observatory
00023 //#                        520 Edgemont Road
00024 //#                        Charlottesville, VA 22903-2475 USA
00025 //#
00026 //#
00027 
00028 #ifndef SYNTHESIS_TSYSGAINCAL_H
00029 #define SYNTHESIS_TSYSGAINCAL_H
00030 
00031 #include <casa/aips.h>
00032 #include <casa/Containers/Record.h>
00033 #include <casa/BasicSL/Complex.h>
00034 #include <synthesis/MeasurementComponents/VisCal.h>
00035 #include <synthesis/MeasurementComponents/SolvableVisCal.h>
00036 #include <synthesis/MeasurementComponents/StandardVisCal.h>
00037 // not yet:#include <synthesis/MeasurementComponents/CalCorruptor.h>
00038 
00039 namespace casa { //# NAMESPACE CASA - BEGIN
00040 
00041 // Forward declarations
00042 class VisEquation;
00043 //not yet: class TJonesCorruptor;
00044 
00045 
00046 // **********************************************************
00047 //  Standard Tsys Spectrum from SYSCAL table
00048 //
00049 
00050 class StandardTsys : public BJones {
00051 public:
00052 
00053   // Constructor
00054   StandardTsys(VisSet& vs);
00055   StandardTsys(String msname,Int MSnAnt,Int MSnSpw);
00056   StandardTsys(const MSMetaInfoForCal& msmc);
00057   StandardTsys(const Int& nAnt);
00058 
00059   virtual ~StandardTsys();
00060 
00061   // Return the type enum (for now, pretend we are B)
00062   virtual Type type() { return VisCal::B; };
00063 
00064   // Return type name as string (ditto)
00065   virtual String typeName()     { return "B TSYS"; };
00066   virtual String longTypeName() { return "B TSYS (freq-dep Tsys)"; };
00067 
00068   // Tsys are Float parameters
00069   virtual VisCalEnum::VCParType parType() { return VisCalEnum::REAL; };
00070 
00071   // Local setSpecify
00072   using BJones::setSpecify;
00073   virtual void setSpecify(const Record& specify);
00074 
00075   // Specific specify() that reads the SYSCAL subtable
00076   virtual void specify(const Record& specify);
00077 
00078   // In general, we are freq-dep
00079   virtual Bool freqDepPar() { return True; };
00080 
00081   // Specialized to turn on spectral weight calibration
00082   virtual void correct2(vi::VisBuffer2& vb, Bool trial=False, Bool doWtSp=False);
00083 
00084 protected:
00085 
00086   // The Jones matrix elements are not the parameters
00087   //  ( j = sqrt(p) )
00088   virtual Bool trivialJonesElem() { return False; };
00089 
00090   // Specialized calcPar that does some sanity checking
00091   virtual void calcPar();
00092 
00093   // Invert doInv for Tsys corrections
00094   virtual void syncJones(const Bool& doInv) { BJones::syncJones(!doInv); };
00095   
00096   // Calculate Jones matrix elements from Tsys (j = sqrt(p) )
00097   virtual void calcAllJones();
00098 
00099   // Local version that arrange channelized correction
00100   virtual void syncWtScale();
00101 
00102   // Calculate weight scale
00103   virtual void calcWtScale();
00104   virtual void calcWtScale2();  // called by local syncWtScale only
00105 
00106 private:
00107 
00108   // The name of the SYSCAL table
00109   String sysCalTabName_;
00110 
00111   // Signal formation of channelized weight calibration
00112   Bool freqDepCalWt_;
00113 
00114   // <nothing>
00115 
00116 
00117 };
00118 
00119 } //# NAMESPACE CASA - END
00120 
00121 #endif
00122 
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