1 | //#--------------------------------------------------------------------------- |
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2 | //# MBrecord.h: Class to store an MBFITS single-dish data record. |
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3 | //#--------------------------------------------------------------------------- |
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4 | //# Copyright (C) 2000-2008 |
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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: MBrecord.h,v 19.14 2008-11-17 06:36:12 cal103 Exp $ |
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30 | //#--------------------------------------------------------------------------- |
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31 | //# The MBrecord class stores an MBFITS single-dish data record. |
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32 | //# |
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33 | //# Storage for spectral data may be managed in either of two ways: |
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34 | //# |
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35 | //# 1) The allocate() member function may be used to allocate storage that |
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36 | //# is subsequently managed by the MBrecord class; the assignment |
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37 | //# operator automatically deletes and reallocates more if insufficient |
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38 | //# was provided, and the MBrecord destructor deletes it. |
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39 | //# |
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40 | //# Allocation of storage for cross-polarization data is optional. |
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41 | //# |
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42 | //# 2) In some cases it may be desirable for the user to provide storage via |
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43 | //# the 'spectra', and 'flagged' (and 'xpol') variables in order to avoid |
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44 | //# in-core copying. It is assumed that space has been provided for at |
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45 | //# least nChan*nPol floats for 'spectra', nChan*nPol unsigned chars for |
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46 | //# 'flagged', and 2*nChan floats for 'xpol'. This storage will not be |
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47 | //# reassigned by the assignment operator nor deleted by the destructor. |
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48 | //# |
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49 | //# The two methods may not be mixed; allocate() checks that either |
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50 | //# |
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51 | //# a) the 'spectra', 'flagged', and 'xpol' variables are null pointers, |
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52 | //# |
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53 | //# b) storage was previously allocated via allocate(). |
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54 | //# |
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55 | //# Original: 2000/08/01 Mark Calabretta, ATNF |
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56 | //#--------------------------------------------------------------------------- |
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57 | |
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58 | #ifndef ATNF_MBRECORD_H |
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59 | #define ATNF_MBRECORD_H |
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60 | |
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61 | using namespace std; |
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62 | |
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63 | // <summary> |
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64 | // Class to store an MBFITS single-dish data record. |
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65 | // </summary> |
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66 | |
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67 | class MBrecord |
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68 | { |
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69 | public: |
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70 | // Default constructor allocates arrays for the required number of IFs. |
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71 | MBrecord(int nIF = 0); |
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72 | |
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73 | // Destructor; deletes any storage that may have been auto-allocated by |
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74 | // the assignment operator. |
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75 | ~MBrecord(); |
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76 | |
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77 | // Expand arrays if necessary to accomodate the required number of IFs. |
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78 | void setNIFs(int nIF); |
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79 | |
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80 | // Ensure there is enough storage for the specified number of spectral |
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81 | // products (channels x polarizations) for IF with array index iif (i.e. |
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82 | // the actual IF number is IFno[iif]). Expands arrays if necessary but |
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83 | // never contracts. |
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84 | void allocate(int iIF, int nprod, int nxpol); |
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85 | |
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86 | // Free all allocate()'d storage. |
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87 | void free(); |
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88 | |
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89 | // The assignment operator does a deep copy and will auto-allocate or |
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90 | // re-allocate data storage if necessary. |
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91 | MBrecord &operator=(const MBrecord &other); |
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92 | |
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93 | // Extract a selected IF from a MBrecord into another. |
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94 | int extract(const MBrecord &other, int iIF); |
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95 | |
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96 | int scanNo; // Scan number. |
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97 | int cycleNo; // Integration cycle number. |
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98 | char datobs[12]; // Date of observation YYYY-MM-DD. |
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99 | double utc; // UTC of the integration, s. |
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100 | float exposure; // Integration time, s. |
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101 | char srcName[20]; // Source name. |
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102 | double srcRA; // Source J2000 right ascension, radian. |
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103 | double srcDec; // Source J2000 declination, radian. |
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104 | double restFreq; // Line rest frequency, Hz. |
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105 | char obsType[16]; // Two-letter observation type codes. |
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106 | |
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107 | // Beam-dependent parameters. |
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108 | short beamNo; // Multibeam beam number. |
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109 | double ra; // J2000 right ascension, radian. |
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110 | double dec; // J2000 declination, radian, |
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111 | int pCode; // Pointing problem code: |
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112 | // 1: position and timestamp unchanged, |
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113 | // 2: position changed but not timestamp, |
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114 | // 3: position and timestamp are rubbish, |
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115 | // 4: timestamp/1000 scale error (repaired), |
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116 | // 5: timestamp late by 1.0 sec (repaired), |
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117 | // 6: timestamp late by 0.5 sec (repaired). |
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118 | float rateAge; // Scan rate age (staleness), s. |
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119 | float raRate; // Scan rate in right ascension, radian/s. |
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120 | float decRate; // Scan rate in declination, radian/s. |
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121 | float paRate; // Rate of change of position angle, radian/s. |
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122 | |
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123 | // IF-dependent parameters. |
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124 | short nIF; // Number of IFs. |
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125 | short *IFno; // IF number. |
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126 | int *nChan; // Number of channels. |
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127 | int *nPol; // Number of polarizations. |
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128 | float *fqRefPix; // Frequency reference pixel. |
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129 | double *fqRefVal; // Frequency reference value, Hz. |
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130 | double *fqDelt; // Frequency separation between channels, Hz. |
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131 | float (*tsys)[2]; // Tsys for each polarization, Jy. |
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132 | float (*calfctr)[2]; // Calibration factor for each polarization. |
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133 | float (*xcalfctr)[2]; // Calibration factor for cross-polarizations. |
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134 | int haveBase; // Are baseline parameters present? |
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135 | float (*baseLin)[2][2]; // Linear baseline fit for each polarization. |
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136 | float (*baseSub)[2][9]; // Polynomial baseline subtracted. |
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137 | int haveSpectra; // Is spectral data present? |
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138 | float* *spectra; // Spectra for each polarization, Jy. |
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139 | unsigned char* *flagged; // Channel flagging, 0 = good, else bad. |
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140 | float* *xpol; // Cross polarization spectra (if any). |
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141 | |
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142 | // Only present for Parkes Multibeam or LBA data after 1997/02/02. |
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143 | float (*tcal)[2]; // Tcal for each polarization. |
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144 | |
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145 | // Extra syscal data available for Parkes Multibeam observations only. |
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146 | int extraSysCal; // Is this extra SysCal data available? |
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147 | |
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148 | float azimuth; // Azimuth, radian. |
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149 | float elevation; // Elevation, radian. |
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150 | float parAngle; // Parallactic angle, radian. |
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151 | |
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152 | float focusAxi; // Axial focus position, m. |
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153 | float focusTan; // Focus platform translation, m. |
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154 | float focusRot; // Focus rotation, radian. |
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155 | |
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156 | float temp; // Temperature, C. |
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157 | float pressure; // Pressure, Pa. |
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158 | float humidity; // Relative humidity, %. |
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159 | float windSpeed; // Wind speed, m/s. |
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160 | float windAz; // Wind azimuth, radian. |
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161 | |
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162 | char tcalTime[20]; // Time of measurement of cal signals. |
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163 | |
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164 | short refBeam; // Reference beam, in beam-switching (MX) |
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165 | // mode (added 1999/03/17). |
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166 | |
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167 | private: |
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168 | int cNIF; // Number of IFs allocated. |
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169 | int* cNProd; // Storage allocated for data. |
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170 | int* cNXPol; // Storage allocated for xpol. |
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171 | }; |
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172 | |
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173 | #endif |
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