| 1 | //#--------------------------------------------------------------------------- |
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| 2 | //# SDAttr.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: |
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| 30 | //#--------------------------------------------------------------------------- |
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| 31 | #ifndef SDATTR_H |
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| 32 | #define SDATTR_H |
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| 33 | |
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| 34 | #include <casa/aips.h> |
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| 35 | #include <measures/Measures/MEpoch.h> |
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| 36 | #include <casa/Utilities/CountedPtr.h> |
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| 37 | |
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| 38 | #include "SDLog.h" |
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| 39 | #include "SDDefs.h" |
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| 40 | |
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| 41 | template<class T> class casa::Vector; |
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| 42 | |
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| 43 | |
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| 44 | namespace asap { |
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| 45 | |
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| 46 | class SDAttr : public SDLog { |
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| 47 | |
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| 48 | public: |
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| 49 | |
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| 50 | // Constructor |
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| 51 | SDAttr(); |
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| 52 | |
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| 53 | // Destructor |
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| 54 | ~SDAttr(); |
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| 55 | |
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| 56 | // Copy Constructor (copy semantics) |
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| 57 | SDAttr(const SDAttr& other); |
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| 58 | |
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| 59 | // Assignment (copy semantics) |
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| 60 | SDAttr &operator=(const SDAttr& other); |
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| 61 | |
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| 62 | // Telescope diameter(m). Throws exception if unknown. |
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| 63 | casa::Float diameter(Instrument inst) const; |
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| 64 | |
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| 65 | // Beam efficiency. Frequency in Hz. Returns 1 if unknown. |
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| 66 | casa::Vector<casa::Float> |
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| 67 | beamEfficiency(Instrument instr, const casa::MEpoch& dateObs, |
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| 68 | const casa::Vector<casa::Float>& freqs) const; |
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| 69 | |
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| 70 | // Aperture efficiency. Frequency in Hz. Returns 1 if unknown. |
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| 71 | casa::Vector<casa::Float> |
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| 72 | apertureEfficiency(Instrument instr, |
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| 73 | const casa::MEpoch& dateObs, |
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| 74 | const casa::Vector<casa::Float>& freqs) const; |
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| 75 | |
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| 76 | // Find factor to convert Jy -> K for this telescope, date of |
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| 77 | // observation and frequency (Hz) |
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| 78 | casa::Vector<casa::Float> JyPerK(Instrument instr, |
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| 79 | const casa::MEpoch& dateObs, |
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| 80 | const casa::Vector<casa::Float>& freqs) |
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| 81 | const; |
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| 82 | |
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| 83 | // Gain Elevation polynomial correction coefficients (elevation in |
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| 84 | // degrees) Returns length 0 if not known. |
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| 85 | casa::Vector<casa::Float> gainElevationPoly(Instrument instr) const; |
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| 86 | |
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| 87 | // Find feed polarization type of feeds. In future this needs to come |
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| 88 | // from the data themselves |
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| 89 | FeedPolType feedPolType(Instrument) const; |
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| 90 | |
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| 91 | // Helper function to check instrument (antenna) name and give enum |
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| 92 | static Instrument convertInstrument(const casa::String& instrument, |
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| 93 | casa::Bool throwIt); |
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| 94 | |
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| 95 | // Helper function. Finds factor to convert K -> Jy. Provide |
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| 96 | // aperture efficiency and dish geometric diameter (m) |
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| 97 | static casa::Float findJyPerK(casa::Float etaAp, casa::Float D); |
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| 98 | |
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| 99 | private: |
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| 100 | |
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| 101 | // Static data |
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| 102 | casa::Vector<casa::Float> MopEtaBeamX_; // Beam efficiency |
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| 103 | casa::Vector<casa::Float> MopEtaBeam2003Y_; |
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| 104 | casa::Vector<casa::Float> MopEtaBeam2004Y_; |
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| 105 | |
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| 106 | casa::Vector<casa::Float> MopEtaApX_; // Aperture efficiency |
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| 107 | casa::Vector<casa::Float> MopEtaAp2004Y_; |
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| 108 | |
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| 109 | casa::Vector<casa::Float> TidEtaApX_; // Aperture efficiency |
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| 110 | casa::Vector<casa::Float> TidEtaApY_; |
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| 111 | |
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| 112 | casa::Vector<casa::Float> TidGainElPoly_; // Gain-el correction poly coeffs |
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| 113 | |
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| 114 | // Init private data |
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| 115 | void initData(); |
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| 116 | |
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| 117 | // Linear interpolation |
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| 118 | casa::Vector<casa::Float> interp(const casa::Vector<casa::Float>& xOut, |
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| 119 | const casa::Vector<casa::Float>& xIn, |
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| 120 | const casa::Vector<casa::Float>& yIn) const; |
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| 121 | |
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| 122 | |
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| 123 | }; |
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| 124 | |
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| 125 | } // namespace |
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| 126 | |
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| 127 | #endif |
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