1 | //#--------------------------------------------------------------------------- |
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2 | //# MBFITSreader.h: ATNF single-dish RPFITS reader. |
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3 | //#--------------------------------------------------------------------------- |
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4 | //# Copyright (C) 2000-2007 |
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5 | //# Mark Calabretta, ATNF |
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6 | //# |
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7 | //# This library is free software; you can redistribute it and/or modify it |
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8 | //# under the terms of the GNU Library General Public License as published by |
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9 | //# the Free Software Foundation; either version 2 of the License, or (at your |
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10 | //# option) any later version. |
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11 | //# |
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12 | //# This library is distributed in the hope that it will be useful, but WITHOUT |
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13 | //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 | //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public |
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15 | //# License for more details. |
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16 | //# |
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17 | //# You should have received a copy of the GNU Library General Public License |
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18 | //# along with this library; if not, write to the Free Software Foundation, |
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19 | //# Inc., 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: mcalabre@atnf.csiro.au. |
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23 | //# Postal address: Dr. Mark Calabretta, |
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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: MBFITSreader.h,v 19.21 2008-11-17 06:33:10 cal103 Exp $ |
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30 | //#--------------------------------------------------------------------------- |
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31 | //# The MBFITSreader class reads single dish RPFITS files (such as Parkes |
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32 | //# Multibeam MBFITS files). |
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33 | //# |
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34 | //# Original: 2000/07/28 Mark Calabretta |
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35 | //#--------------------------------------------------------------------------- |
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36 | |
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37 | #ifndef ATNF_MBFITSREADER_H |
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38 | #define ATNF_MBFITSREADER_H |
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39 | |
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40 | #include <atnf/PKSIO/FITSreader.h> |
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41 | #include <atnf/PKSIO/MBrecord.h> |
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42 | |
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43 | using namespace std; |
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44 | |
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45 | // <summary> |
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46 | // ATNF single-dish RPFITS reader. |
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47 | // </summary> |
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48 | |
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49 | class MBFITSreader : public FITSreader |
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50 | { |
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51 | public: |
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52 | // Default constructor; position interpolation codes are: |
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53 | // 0: no interpolation, |
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54 | // 1: correct interpolation, |
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55 | // 2: pksmbfits interpolation. |
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56 | MBFITSreader(const int retry = 0, const int interpolate = 1); |
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57 | |
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58 | // Destructor. |
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59 | virtual ~MBFITSreader(); |
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60 | |
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61 | // Open the RPFITS file for reading. |
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62 | virtual int open( |
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63 | char *rpname, |
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64 | int &nBeam, |
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65 | int* &beams, |
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66 | int &nIF, |
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67 | int* &IFs, |
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68 | int* &nChan, |
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69 | int* &nPol, |
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70 | int* &haveXPol, |
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71 | int &haveBase, |
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72 | int &haveSpectra, |
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73 | int &extraSysCal); |
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74 | |
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75 | // Get parameters describing the data. |
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76 | virtual int getHeader( |
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77 | char observer[32], |
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78 | char project[32], |
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79 | char telescope[32], |
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80 | double antPos[3], |
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81 | char obsType[32], |
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82 | char bunit[32], |
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83 | float &equinox, |
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84 | char radecsys[32], |
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85 | char dopplerFrame[32], |
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86 | char datobs[32], |
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87 | double &utc, |
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88 | double &refFreq, |
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89 | double &bandwidth); |
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90 | |
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91 | // Get frequency parameters for each IF. |
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92 | virtual int getFreqInfo( |
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93 | int &nIF, |
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94 | double* &startFreq, |
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95 | double* &endFreq); |
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96 | |
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97 | // Find the range of the data selected in time and position. |
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98 | virtual int findRange( |
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99 | int &nRow, |
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100 | int &nSel, |
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101 | char dateSpan[2][32], |
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102 | double utcSpan[2], |
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103 | double* &positions); |
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104 | |
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105 | // Read the next data record. |
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106 | virtual int read(MBrecord &record); |
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107 | |
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108 | // Close the RPFITS file. |
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109 | virtual void close(void); |
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110 | |
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111 | private: |
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112 | // RPFITSIN subroutine arguments. |
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113 | int cBaseline, cFlag, cBin, cIFno, cSrcNo; |
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114 | float cUTC, cU, cV, cW, *cVis, *cWgt; |
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115 | |
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116 | char cDateObs[12]; |
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117 | int *cBeamSel, *cChanOff, cFirst, *cIFSel, cInterp, cIntTime, cMBopen, |
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118 | cMopra, cNBeamSel, cNBin, cRetry, cSUpos, *cXpolOff; |
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119 | |
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120 | // The data has to be bufferred to allow positions to be interpolated. |
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121 | int cEOF, cEOS, cFlushBin, cFlushIF, cFlushing; |
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122 | double *cPosUTC; |
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123 | MBrecord *cBuffer; |
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124 | |
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125 | // Scan and cycle number bookkeeping. |
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126 | int cCycleNo, cScanNo; |
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127 | double cPrevUTC; |
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128 | |
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129 | // Read the next data record from the RPFITS file. |
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130 | int rpget(int syscalonly, int &EOS); |
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131 | int rpfitsin(int &jstat); |
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132 | |
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133 | // Check and, if necessary, repair a position timestamp. |
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134 | int cCode5, cNRate; |
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135 | double cAvRate[2]; |
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136 | int fixw(const char *datobs, int cycleNo, int beamNo, double avRate[2], |
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137 | double thisRA, double thisDec, double thisUTC, |
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138 | double nextRA, double nextDec, float &nextUTC); |
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139 | |
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140 | // Subtract two UTCs (s). |
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141 | double utcDiff(double utc1, double utc2); |
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142 | |
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143 | // Compute and apply the scan rate corrected for grid convergence. |
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144 | double cRA0, cDec0; |
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145 | void scanRate(double ra0, double dec0, |
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146 | double ra1, double dec1, |
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147 | double ra2, double dec2, double dt, |
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148 | double &raRate, double &decRate); |
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149 | void applyRate(double ra0, double dec0, |
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150 | double ra1, double dec1, |
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151 | double raRate, double decRate, double dt, |
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152 | double &ra2, double &dec2); |
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153 | void eulerx(double lng0, double lat0, double phi0, double theta, |
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154 | double phi, double &lng1, double &lat1); |
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155 | }; |
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156 | |
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157 | #endif |
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