1 | // Part of BNC, a utility for retrieving decoding and
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2 | // converting GNSS data streams from NTRIP broadcasters.
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3 | //
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4 | // Copyright (C) 2007
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5 | // German Federal Agency for Cartography and Geodesy (BKG)
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6 | // http://www.bkg.bund.de
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7 | // Czech Technical University Prague, Department of Geodesy
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8 | // http://www.fsv.cvut.cz
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9 | //
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10 | // Email: euref-ip@bkg.bund.de
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11 | //
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12 | // This program is free software; you can redistribute it and/or
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13 | // modify it under the terms of the GNU General Public License
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14 | // as published by the Free Software Foundation, version 2.
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15 | //
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16 | // This program is distributed in the hope that it will be useful,
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17 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
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18 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 | // GNU General Public License for more details.
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20 | //
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21 | // You should have received a copy of the GNU General Public License
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22 | // along with this program; if not, write to the Free Software
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23 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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24 |
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25 | /* -------------------------------------------------------------------------
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26 | * BKG NTRIP Client
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27 | * -------------------------------------------------------------------------
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28 | *
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29 | * Class: t_reqcAnalyze
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30 | *
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31 | * Purpose: Analyze RINEX Files
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32 | *
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33 | * Author: L. Mervart
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34 | *
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35 | * Created: 11-Apr-2012
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36 | *
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37 | * Changes:
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38 | *
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39 | * -----------------------------------------------------------------------*/
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40 |
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41 | #include <iostream>
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42 | #include "reqcanalyze.h"
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43 | #include "bncapp.h"
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44 | #include "bncsettings.h"
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45 | #include "reqcedit.h"
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46 | #include "bncutils.h"
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47 | #include "bncpostprocess.h"
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48 | #include "graphwin.h"
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49 | #include "polarplot.h"
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50 |
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51 | using namespace std;
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52 |
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53 | // Constructor
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54 | ////////////////////////////////////////////////////////////////////////////
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55 | t_reqcAnalyze::t_reqcAnalyze(QObject* parent) : QThread(parent) {
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56 |
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57 | bncSettings settings;
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58 |
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59 | _logFileName = settings.value("reqcOutLogFile").toString(); expandEnvVar(_logFileName);
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60 | _logFile = 0;
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61 | _log = 0;
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62 | _obsFileNames = settings.value("reqcObsFile").toString().split(",", QString::SkipEmptyParts);
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63 | _navFileNames = settings.value("reqcNavFile").toString().split(",", QString::SkipEmptyParts);
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64 |
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65 | _currEpo = 0;
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66 |
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67 | connect(this, SIGNAL(displayGraph()), this, SLOT(slotDisplayGraph()));
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68 | }
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69 |
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70 | // Destructor
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71 | ////////////////////////////////////////////////////////////////////////////
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72 | t_reqcAnalyze::~t_reqcAnalyze() {
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73 | for (int ii = 0; ii < _rnxObsFiles.size(); ii++) {
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74 | delete _rnxObsFiles[ii];
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75 | }
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76 | for (int ii = 0; ii < _ephs.size(); ii++) {
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77 | delete _ephs[ii];
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78 | }
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79 | delete _log; _log = 0;
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80 | delete _logFile; _logFile = 0;
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81 | }
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82 |
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83 | //
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84 | ////////////////////////////////////////////////////////////////////////////
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85 | void t_reqcAnalyze::slotDisplayGraph() {
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86 | if (((bncApp*) qApp)->mode() == bncApp::interactive) {
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87 | QVector<QWidget*> plots;
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88 | t_polarPlot* plotMP1 = new t_polarPlot(0); plots << plotMP1;
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89 | t_polarPlot* plotMP2 = new t_polarPlot(0); plots << plotMP2;
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90 |
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91 | t_graphWin* graphWin = new t_graphWin(0, plots);
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92 | graphWin->show();
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93 | }
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94 | }
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95 |
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96 | //
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97 | ////////////////////////////////////////////////////////////////////////////
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98 | void t_reqcAnalyze::run() {
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99 |
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100 | // Open Log File
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101 | // -------------
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102 | _logFile = new QFile(_logFileName);
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103 | _logFile->open(QIODevice::WriteOnly | QIODevice::Text);
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104 | _log = new QTextStream();
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105 | _log->setDevice(_logFile);
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106 |
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107 | // Initialize RINEX Observation Files
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108 | // ----------------------------------
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109 | t_reqcEdit::initRnxObsFiles(_obsFileNames, _rnxObsFiles);
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110 |
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111 | // Read Ephemerides
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112 | // ----------------
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113 | t_reqcEdit::readEphemerides(_navFileNames, _ephs);
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114 |
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115 | // Loop over all RINEX Files
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116 | // -------------------------
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117 | for (int ii = 0; ii < _rnxObsFiles.size(); ii++) {
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118 | analyzeFile(_rnxObsFiles[ii]);
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119 | }
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120 |
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121 | // Exit
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122 | // ----
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123 | bncApp* app = (bncApp*) qApp;
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124 | if ( app->mode() != bncApp::interactive) {
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125 | app->exit(0);
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126 | }
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127 | else {
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128 | emit finished();
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129 | deleteLater();
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130 | }
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131 | }
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132 |
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133 | //
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134 | ////////////////////////////////////////////////////////////////////////////
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135 | void t_reqcAnalyze::analyzeFile(t_rnxObsFile* obsFile) {
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136 |
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137 | *_log << "Analyze File\n"
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138 | << "------------\n"
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139 | << obsFile->fileName().toAscii().data() << endl << endl;
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140 |
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141 | // Loop over all Epochs
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142 | // --------------------
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143 | while ( (_currEpo = obsFile->nextEpoch()) != 0) {
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144 |
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145 | // Loop over all satellites
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146 | // ------------------------
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147 | for (unsigned iObs = 0; iObs < _currEpo->rnxSat.size(); iObs++) {
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148 | const t_rnxObsFile::t_rnxSat& rnxSat = _currEpo->rnxSat[iObs];
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149 | t_obs obs;
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150 | t_postProcessing::setObsFromRnx(obsFile, _currEpo, rnxSat, obs);
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151 |
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152 | if (obs.satSys == 'R') {
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153 | continue; // TODO: set channel number
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154 | }
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155 |
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156 | QString prn = QString("%1%2").arg(obs.satSys)
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157 | .arg(obs.satNum, 2, 10, QChar('0'));
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158 |
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159 | t_satStat& satStat = _satStat[prn];
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160 | satStat.addObs(obs);
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161 | }
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162 |
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163 | } // while (_currEpo)
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164 |
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165 | // Analyze the Multipath
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166 | // ---------------------
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167 | _log->setRealNumberNotation(QTextStream::FixedNotation);
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168 | _log->setRealNumberPrecision(2);
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169 |
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170 | QMapIterator<QString, t_satStat> it(_satStat);
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171 | while (it.hasNext()) {
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172 | it.next();
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173 | QString prn = it.key();
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174 | const t_satStat& satStat = it.value();
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175 |
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176 | for (int im = 1; im <= 2; im++) {
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177 | const QVector<double>& MP = (im == 1) ? satStat.MP1 : satStat.MP2;
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178 | if (MP.size() > 1) {
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179 | double mean = 0.0;
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180 | for (int ii = 0; ii < MP.size(); ii++) {
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181 | mean += MP[ii];
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182 | }
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183 | mean /= MP.size();
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184 | double stddev = 0.0;
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185 | for (int ii = 0; ii < MP.size(); ii++) {
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186 | double diff = MP[ii] - mean;
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187 | stddev += diff * diff;
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188 | }
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189 | double multipath = sqrt(stddev / (MP.size()-1));
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190 |
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191 | *_log << "MP" << im << " " << prn << " " << multipath << endl;
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192 | }
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193 | }
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194 |
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195 | }
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196 |
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197 | emit displayGraph();
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198 |
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199 | _log->flush();
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200 | }
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201 |
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202 | //
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203 | ////////////////////////////////////////////////////////////////////////////
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204 | void t_reqcAnalyze::t_satStat::addObs(const t_obs& obs) {
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205 | if (currObs) {
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206 | delete prevObs;
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207 | prevObs = currObs;
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208 | }
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209 | currObs = new t_anaObs(obs);
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210 |
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211 | // Compute the Multipath
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212 | // ----------------------
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213 | if (obs.l1() != 0.0 && obs.l2() != 0.0) {
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214 | double f1 = t_CST::f1(obs.satSys, obs.slotNum);
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215 | double f2 = t_CST::f2(obs.satSys, obs.slotNum);
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216 |
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217 | double L1 = obs.l1() * t_CST::c / f1;
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218 | double L2 = obs.l2() * t_CST::c / f2;
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219 |
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220 | if (obs.p1() != 0.0) {
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221 | currObs->M1 = obs.p1() - L1 - 2.0*f2*f2/(f1*f1-f2*f2) * (L1 - L2);
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222 | MP1 << currObs->M1;
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223 | }
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224 | if (obs.p2() != 0.0) {
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225 | currObs->M2 = obs.p2() - L2 - 2.0*f1*f1/(f1*f1-f2*f2) * (L1 - L2);
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226 | MP2 << currObs->M2;
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227 | }
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228 | }
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229 | }
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