| 1 | //#---------------------------------------------------------------------------
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| 2 | //# STAttr.h: Return known attributes about telescopes
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| 3 | //#---------------------------------------------------------------------------
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| 4 | //# Copyright (C) 2004
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| 5 | //# ATNF
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| 6 | //#
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| 7 | //# This program is free software; you can redistribute it and/or modify it
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| 8 | //# under the terms of the GNU General Public License as published by the Free
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| 9 | //# Software Foundation; either version 2 of the License, or (at your option)
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| 10 | //# any later version.
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| 11 | //#
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| 12 | //# This program is distributed in the hope that it will be useful, but
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| 13 | //# WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | //# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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| 15 | //# Public License for more details.
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| 16 | //#
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| 17 | //# You should have received a copy of the GNU General Public License along
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| 18 | //# with this program; if not, write to the Free Software Foundation, Inc.,
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| 19 | //# 675 Massachusetts Ave, Cambridge, MA 02139, USA.
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| 20 | //#
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| 21 | //# Correspondence concerning this software should be addressed as follows:
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| 22 | //# Internet email: Malte.Marquarding@csiro.au
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| 23 | //# Postal address: Malte Marquarding,
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| 24 | //# Australia Telescope National Facility,
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| 25 | //# P.O. Box 76,
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| 26 | //# Epping, NSW, 2121,
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| 27 | //# AUSTRALIA
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| 28 | //#
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| 29 | //# $Id: STAttr.h 1188 2006-08-28 02:20:39Z mar637 $
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| 30 | //#---------------------------------------------------------------------------
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| 31 | #ifndef STATTR_H
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| 32 | #define STATTR_H
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| 33 |
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| 34 | #include <string>
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| 35 |
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| 36 | #include <casa/aips.h>
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| 37 | #include <measures/Measures/MEpoch.h>
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| 38 | #include <casa/Utilities/CountedPtr.h>
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| 39 |
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| 40 | #include "Logger.h"
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| 41 | #include "STDefs.h"
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| 42 |
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| 43 | namespace casa {
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| 44 | template<class T> class Vector;
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| 45 | }
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| 46 |
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| 47 | namespace asap {
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| 48 |
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| 49 | class STAttr : public Logger {
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| 50 |
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| 51 | public:
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| 52 |
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| 53 | // Constructor
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| 54 | STAttr();
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| 55 |
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| 56 | // Destructor
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| 57 | virtual ~STAttr();
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| 58 |
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| 59 | // Copy Constructor (copy semantics)
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| 60 | STAttr(const STAttr& other);
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| 61 |
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| 62 | // Assignment (copy semantics)
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| 63 | STAttr &operator=(const STAttr& other);
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| 64 |
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| 65 | // Telescope diameter(m). Throws exception if unknown.
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| 66 | casa::Float diameter(Instrument inst) const;
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| 67 |
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| 68 | // Beam efficiency. Frequency in Hz. Returns 1 if unknown.
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| 69 | casa::Vector<casa::Float>
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| 70 | beamEfficiency(Instrument instr, const casa::MEpoch& dateObs,
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| 71 | const casa::Vector<casa::Float>& freqs) const;
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| 72 |
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| 73 | // Aperture efficiency. Frequency in Hz. Returns 1 if unknown.
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| 74 | casa::Vector<casa::Float>
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| 75 | apertureEfficiency(Instrument instr,
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| 76 | const casa::MEpoch& dateObs,
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| 77 | const casa::Vector<casa::Float>& freqs) const;
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| 78 |
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| 79 | // Find factor to convert Jy -> K for this telescope, date of
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| 80 | // observation and frequency (Hz)
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| 81 | casa::Vector<casa::Float> JyPerK(Instrument instr,
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| 82 | const casa::MEpoch& dateObs,
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| 83 | const casa::Vector<casa::Float>& freqs)
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| 84 | const;
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| 85 |
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| 86 | // Gain Elevation polynomial correction coefficients (elevation in
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| 87 | // degrees) Returns length 0 if not known.
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| 88 | casa::Vector<casa::Float> gainElevationPoly(Instrument instr) const;
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| 89 |
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| 90 | // Find feed polarization type of feeds. In future this needs to come
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| 91 | // from the data themselves
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| 92 | std::string feedPolType(Instrument) const;
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| 93 |
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| 94 | // Helper function to check instrument (antenna) name and give enum
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| 95 | static Instrument convertInstrument(const casa::String& instrument,
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| 96 | casa::Bool throwIt);
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| 97 |
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| 98 | // Helper function. Finds factor to convert K -> Jy. Provide
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| 99 | // aperture efficiency and dish geometric diameter (m)
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| 100 | static casa::Float findJyPerK(casa::Float etaAp, casa::Float D);
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| 101 |
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| 102 | private:
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| 103 |
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| 104 | // Static data
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| 105 | casa::Vector<casa::Float> MopEtaBeamX_; // Beam efficiency
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| 106 | casa::Vector<casa::Float> MopEtaBeam2003Y_;
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| 107 | casa::Vector<casa::Float> MopEtaBeam2004Y_;
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| 108 |
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| 109 | casa::Vector<casa::Float> MopEtaApX_; // Aperture efficiency
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| 110 | casa::Vector<casa::Float> MopEtaAp2004Y_;
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| 111 |
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| 112 | casa::Vector<casa::Float> TidEtaApX_; // Aperture efficiency
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| 113 | casa::Vector<casa::Float> TidEtaApY_;
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| 114 |
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| 115 | casa::Vector<casa::Float> TidGainElPoly_; // Gain-el correction poly coeffs
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| 116 |
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| 117 | // Init private data
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| 118 | void initData();
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| 119 |
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| 120 | // Linear interpolation
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| 121 | casa::Vector<casa::Float> interp(const casa::Vector<casa::Float>& xOut,
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| 122 | const casa::Vector<casa::Float>& xIn,
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| 123 | const casa::Vector<casa::Float>& yIn) const;
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| 124 |
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| 125 |
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| 126 | };
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| 127 |
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| 128 | } // namespace
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| 129 |
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| 130 | #endif
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