[3899] | 1 | // Part of BNC, a utility for retrieving decoding and
|
---|
| 2 | // converting GNSS data streams from NTRIP broadcasters.
|
---|
| 3 | //
|
---|
| 4 | // Copyright (C) 2007
|
---|
| 5 | // German Federal Agency for Cartography and Geodesy (BKG)
|
---|
| 6 | // http://www.bkg.bund.de
|
---|
| 7 | // Czech Technical University Prague, Department of Geodesy
|
---|
| 8 | // http://www.fsv.cvut.cz
|
---|
| 9 | //
|
---|
| 10 | // Email: euref-ip@bkg.bund.de
|
---|
| 11 | //
|
---|
| 12 | // This program is free software; you can redistribute it and/or
|
---|
| 13 | // modify it under the terms of the GNU General Public License
|
---|
| 14 | // as published by the Free Software Foundation, version 2.
|
---|
| 15 | //
|
---|
| 16 | // This program is distributed in the hope that it will be useful,
|
---|
| 17 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
| 18 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
| 19 | // GNU General Public License for more details.
|
---|
| 20 | //
|
---|
| 21 | // You should have received a copy of the GNU General Public License
|
---|
| 22 | // along with this program; if not, write to the Free Software
|
---|
| 23 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
---|
| 24 |
|
---|
| 25 | /* -------------------------------------------------------------------------
|
---|
| 26 | * BKG NTRIP Client
|
---|
| 27 | * -------------------------------------------------------------------------
|
---|
| 28 | *
|
---|
| 29 | * Class: t_reqcAnalyze
|
---|
| 30 | *
|
---|
| 31 | * Purpose: Analyze RINEX Files
|
---|
| 32 | *
|
---|
| 33 | * Author: L. Mervart
|
---|
| 34 | *
|
---|
| 35 | * Created: 11-Apr-2012
|
---|
| 36 | *
|
---|
| 37 | * Changes:
|
---|
| 38 | *
|
---|
| 39 | * -----------------------------------------------------------------------*/
|
---|
| 40 |
|
---|
| 41 | #include <iostream>
|
---|
[4361] | 42 | #include <iomanip>
|
---|
[4579] | 43 | #include <qwt_plot_renderer.h>
|
---|
[4574] | 44 |
|
---|
[3899] | 45 | #include "reqcanalyze.h"
|
---|
[5070] | 46 | #include "bnccore.h"
|
---|
[3899] | 47 | #include "bncsettings.h"
|
---|
[4254] | 48 | #include "reqcedit.h"
|
---|
[4255] | 49 | #include "bncutils.h"
|
---|
[4300] | 50 | #include "graphwin.h"
|
---|
[4307] | 51 | #include "polarplot.h"
|
---|
[4577] | 52 | #include "availplot.h"
|
---|
[4662] | 53 | #include "eleplot.h"
|
---|
[4672] | 54 | #include "dopplot.h"
|
---|
[3899] | 55 |
|
---|
| 56 | using namespace std;
|
---|
| 57 |
|
---|
[4700] | 58 | const double SLIPTRESH = 10.0; // cycle-slip threshold (meters)
|
---|
[4357] | 59 |
|
---|
[3899] | 60 | // Constructor
|
---|
| 61 | ////////////////////////////////////////////////////////////////////////////
|
---|
| 62 | t_reqcAnalyze::t_reqcAnalyze(QObject* parent) : QThread(parent) {
|
---|
| 63 |
|
---|
| 64 | bncSettings settings;
|
---|
[4254] | 65 |
|
---|
[4257] | 66 | _logFileName = settings.value("reqcOutLogFile").toString(); expandEnvVar(_logFileName);
|
---|
| 67 | _logFile = 0;
|
---|
| 68 | _log = 0;
|
---|
[4254] | 69 | _obsFileNames = settings.value("reqcObsFile").toString().split(",", QString::SkipEmptyParts);
|
---|
[4257] | 70 | _navFileNames = settings.value("reqcNavFile").toString().split(",", QString::SkipEmptyParts);
|
---|
[4266] | 71 |
|
---|
| 72 | _currEpo = 0;
|
---|
[4300] | 73 |
|
---|
[4572] | 74 | connect(this, SIGNAL(dspSkyPlot(const QString&,
|
---|
| 75 | const QByteArray&,
|
---|
| 76 | QVector<t_polarPoint*>*,
|
---|
| 77 | const QByteArray&,
|
---|
| 78 | QVector<t_polarPoint*>*,
|
---|
| 79 | const QByteArray&, double)),
|
---|
| 80 | this, SLOT(slotDspSkyPlot(const QString&,
|
---|
[4556] | 81 | const QByteArray&,
|
---|
| 82 | QVector<t_polarPoint*>*,
|
---|
| 83 | const QByteArray&,
|
---|
| 84 | QVector<t_polarPoint*>*,
|
---|
[4572] | 85 | const QByteArray&, double)));
|
---|
| 86 |
|
---|
[4584] | 87 | connect(this, SIGNAL(dspAvailPlot(const QString&, const QByteArray&)),
|
---|
| 88 | this, SLOT(slotDspAvailPlot(const QString&, const QByteArray&)));
|
---|
[3899] | 89 | }
|
---|
| 90 |
|
---|
| 91 | // Destructor
|
---|
| 92 | ////////////////////////////////////////////////////////////////////////////
|
---|
| 93 | t_reqcAnalyze::~t_reqcAnalyze() {
|
---|
[4255] | 94 | for (int ii = 0; ii < _rnxObsFiles.size(); ii++) {
|
---|
| 95 | delete _rnxObsFiles[ii];
|
---|
| 96 | }
|
---|
| 97 | for (int ii = 0; ii < _ephs.size(); ii++) {
|
---|
| 98 | delete _ephs[ii];
|
---|
| 99 | }
|
---|
| 100 | delete _log; _log = 0;
|
---|
| 101 | delete _logFile; _logFile = 0;
|
---|
[5072] | 102 | if (BNC_CORE->mode() != t_bncCore::interactive) {
|
---|
[5066] | 103 | qApp->exit(0);
|
---|
[4452] | 104 | }
|
---|
[3899] | 105 | }
|
---|
| 106 |
|
---|
| 107 | //
|
---|
| 108 | ////////////////////////////////////////////////////////////////////////////
|
---|
[4572] | 109 | void t_reqcAnalyze::slotDspSkyPlot(const QString& fileName,
|
---|
| 110 | const QByteArray& title1,
|
---|
| 111 | QVector<t_polarPoint*>* data1,
|
---|
| 112 | const QByteArray& title2,
|
---|
| 113 | QVector<t_polarPoint*>* data2,
|
---|
| 114 | const QByteArray& scaleTitle,
|
---|
| 115 | double maxValue) {
|
---|
[4342] | 116 |
|
---|
[5068] | 117 | if (BNC_CORE->GUIenabled()) {
|
---|
[4334] | 118 |
|
---|
[4556] | 119 | if (maxValue == 0.0) {
|
---|
| 120 | if (data1) {
|
---|
| 121 | for (int ii = 0; ii < data1->size(); ii++) {
|
---|
[4566] | 122 | double val = data1->at(ii)->_value;
|
---|
| 123 | if (maxValue < val) {
|
---|
| 124 | maxValue = val;
|
---|
[4556] | 125 | }
|
---|
| 126 | }
|
---|
[4356] | 127 | }
|
---|
[4557] | 128 | if (data2) {
|
---|
[4556] | 129 | for (int ii = 0; ii < data2->size(); ii++) {
|
---|
[4566] | 130 | double val = data2->at(ii)->_value;
|
---|
| 131 | if (maxValue < val) {
|
---|
| 132 | maxValue = val;
|
---|
[4556] | 133 | }
|
---|
| 134 | }
|
---|
[4356] | 135 | }
|
---|
| 136 | }
|
---|
[4357] | 137 |
|
---|
[4556] | 138 | QwtInterval scaleInterval(0.0, maxValue);
|
---|
[4356] | 139 |
|
---|
[4556] | 140 | QVector<QWidget*> plots;
|
---|
| 141 | if (data1) {
|
---|
| 142 | t_polarPlot* plot1 = new t_polarPlot(QwtText(title1), scaleInterval,
|
---|
[5068] | 143 | BNC_CORE->mainWindow());
|
---|
[4556] | 144 | plot1->addCurve(data1);
|
---|
| 145 | plots << plot1;
|
---|
| 146 | }
|
---|
[4557] | 147 | if (data2) {
|
---|
[4556] | 148 | t_polarPlot* plot2 = new t_polarPlot(QwtText(title2), scaleInterval,
|
---|
[5068] | 149 | BNC_CORE->mainWindow());
|
---|
[4556] | 150 | plot2->addCurve(data2);
|
---|
| 151 | plots << plot2;
|
---|
| 152 | }
|
---|
[4334] | 153 |
|
---|
[4564] | 154 | t_graphWin* graphWin = new t_graphWin(0, fileName, plots,
|
---|
[4573] | 155 | &scaleTitle, &scaleInterval);
|
---|
[4334] | 156 |
|
---|
[4445] | 157 | graphWin->show();
|
---|
| 158 |
|
---|
[4451] | 159 | bncSettings settings;
|
---|
| 160 | QString dirName = settings.value("reqcPlotDir").toString();
|
---|
| 161 | if (!dirName.isEmpty()) {
|
---|
[4606] | 162 | QByteArray ext = scaleTitle.isEmpty() ? "_S.png" : "_M.png";
|
---|
[4579] | 163 | graphWin->savePNG(dirName, ext);
|
---|
[4451] | 164 | }
|
---|
[4308] | 165 | }
|
---|
[4300] | 166 | }
|
---|
| 167 |
|
---|
| 168 | //
|
---|
| 169 | ////////////////////////////////////////////////////////////////////////////
|
---|
[3899] | 170 | void t_reqcAnalyze::run() {
|
---|
| 171 |
|
---|
[4255] | 172 | // Open Log File
|
---|
| 173 | // -------------
|
---|
| 174 | _logFile = new QFile(_logFileName);
|
---|
[4517] | 175 | if (_logFile->open(QIODevice::WriteOnly | QIODevice::Text)) {
|
---|
| 176 | _log = new QTextStream();
|
---|
| 177 | _log->setDevice(_logFile);
|
---|
| 178 | }
|
---|
[4255] | 179 |
|
---|
| 180 | // Initialize RINEX Observation Files
|
---|
| 181 | // ----------------------------------
|
---|
[4525] | 182 | t_reqcEdit::initRnxObsFiles(_obsFileNames, _rnxObsFiles, _log);
|
---|
[3899] | 183 |
|
---|
[4257] | 184 | // Read Ephemerides
|
---|
| 185 | // ----------------
|
---|
| 186 | t_reqcEdit::readEphemerides(_navFileNames, _ephs);
|
---|
| 187 |
|
---|
[4255] | 188 | // Loop over all RINEX Files
|
---|
| 189 | // -------------------------
|
---|
[4254] | 190 | for (int ii = 0; ii < _rnxObsFiles.size(); ii++) {
|
---|
| 191 | analyzeFile(_rnxObsFiles[ii]);
|
---|
| 192 | }
|
---|
| 193 |
|
---|
[4255] | 194 | // Exit
|
---|
| 195 | // ----
|
---|
[4452] | 196 | emit finished();
|
---|
| 197 | deleteLater();
|
---|
[3899] | 198 | }
|
---|
[4254] | 199 |
|
---|
| 200 | //
|
---|
| 201 | ////////////////////////////////////////////////////////////////////////////
|
---|
[4260] | 202 | void t_reqcAnalyze::analyzeFile(t_rnxObsFile* obsFile) {
|
---|
[4259] | 203 |
|
---|
[4715] | 204 | _mutex.lock();
|
---|
[4704] | 205 |
|
---|
[4517] | 206 | if (_log) {
|
---|
| 207 | *_log << "\nAnalyze File\n"
|
---|
| 208 | << "------------\n"
|
---|
[4701] | 209 | << "File: " << obsFile->fileName().toAscii().data() << endl;
|
---|
[4517] | 210 | }
|
---|
[4260] | 211 |
|
---|
[4584] | 212 | _allObsMap.clear();
|
---|
| 213 | _availDataMap.clear();
|
---|
[4717] | 214 | _obsStat.reset();
|
---|
[4343] | 215 |
|
---|
[4342] | 216 | // A priori Coordinates
|
---|
| 217 | // --------------------
|
---|
[4679] | 218 | ColumnVector xyzSta = obsFile->xyz();
|
---|
[4342] | 219 |
|
---|
[4262] | 220 | // Loop over all Epochs
|
---|
| 221 | // --------------------
|
---|
[4541] | 222 | try {
|
---|
[4675] | 223 | unsigned iEpo = 0;
|
---|
[4541] | 224 | while ( (_currEpo = obsFile->nextEpoch()) != 0) {
|
---|
[4688] | 225 |
|
---|
| 226 | if (iEpo == 0) {
|
---|
| 227 | _obsStat._startTime = _currEpo->tt;
|
---|
| 228 | _obsStat._antennaName = obsFile->antennaName();
|
---|
| 229 | _obsStat._markerName = obsFile->markerName();
|
---|
| 230 | _obsStat._receiverType = obsFile->receiverType();
|
---|
| 231 | _obsStat._interval = obsFile->interval();
|
---|
| 232 | }
|
---|
| 233 | _obsStat._endTime = _currEpo->tt;
|
---|
[4541] | 234 |
|
---|
| 235 | // Loop over all satellites
|
---|
| 236 | // ------------------------
|
---|
| 237 | for (unsigned iObs = 0; iObs < _currEpo->rnxSat.size(); iObs++) {
|
---|
| 238 | const t_rnxObsFile::t_rnxSat& rnxSat = _currEpo->rnxSat[iObs];
|
---|
| 239 | t_obs obs;
|
---|
[5884] | 240 | t_rnxObsFile::setObsFromRnx(obsFile, _currEpo, rnxSat, obs);
|
---|
[4541] | 241 |
|
---|
[5140] | 242 | QString prn = QString("%1%2").arg(obs.satSys)
|
---|
| 243 | .arg(obs.satNum, 2, 10, QChar('0'));
|
---|
| 244 |
|
---|
| 245 | t_ephGlo* ephGlo = 0;
|
---|
[4541] | 246 | if (obs.satSys == 'R') {
|
---|
[5140] | 247 | for (int ie = 0; ie < _ephs.size(); ie++) {
|
---|
[5776] | 248 | if (QString(_ephs[ie]->prn().toString().c_str()) == prn) {
|
---|
[5140] | 249 | ephGlo = dynamic_cast<t_ephGlo*>(_ephs[ie]);
|
---|
| 250 | break;
|
---|
| 251 | }
|
---|
| 252 | }
|
---|
| 253 | if (ephGlo) {
|
---|
| 254 | obs.slotNum = ephGlo->slotNum();
|
---|
| 255 | }
|
---|
[4541] | 256 | }
|
---|
| 257 |
|
---|
[4694] | 258 | t_irc irc = _allObsMap[prn].addObs(obs);
|
---|
[4675] | 259 |
|
---|
[4694] | 260 | if (irc == success) {
|
---|
[5140] | 261 | t_oneObs* newObs = _allObsMap[prn]._oneObsVec.last();
|
---|
| 262 | if (ephGlo) {
|
---|
| 263 | newObs->_slotSet = true;
|
---|
| 264 | }
|
---|
[4694] | 265 | if (newObs->_hasL1 && newObs->_hasL2) {
|
---|
| 266 | _obsStat._prnStat[prn]._numObs += 1;
|
---|
| 267 | }
|
---|
[4695] | 268 | if (newObs->_slipL1 && newObs->_slipL2) {
|
---|
[4701] | 269 | _obsStat._prnStat[prn]._numSlipsFlagged += 1;
|
---|
[4695] | 270 | }
|
---|
[4694] | 271 | }
|
---|
[4262] | 272 | }
|
---|
[4541] | 273 |
|
---|
[4679] | 274 | prepareObsStat(iEpo, obsFile->interval(), xyzSta);
|
---|
[4678] | 275 | iEpo++;
|
---|
| 276 |
|
---|
[4541] | 277 | } // while (_currEpo)
|
---|
| 278 | }
|
---|
| 279 | catch (QString str) {
|
---|
| 280 | if (_log) {
|
---|
| 281 | *_log << "Exception " << str << endl;
|
---|
[4262] | 282 | }
|
---|
[4541] | 283 | else {
|
---|
| 284 | qDebug() << str;
|
---|
| 285 | }
|
---|
[4715] | 286 | _mutex.unlock();
|
---|
[4541] | 287 | return;
|
---|
| 288 | }
|
---|
[4262] | 289 |
|
---|
[4268] | 290 | // Analyze the Multipath
|
---|
| 291 | // ---------------------
|
---|
[4718] | 292 | QVector<t_polarPoint*>* dataMP1 = new QVector<t_polarPoint*>;
|
---|
| 293 | QVector<t_polarPoint*>* dataMP2 = new QVector<t_polarPoint*>;
|
---|
| 294 | QVector<t_polarPoint*>* dataSNR1 = new QVector<t_polarPoint*>;
|
---|
| 295 | QVector<t_polarPoint*>* dataSNR2 = new QVector<t_polarPoint*>;
|
---|
[4268] | 296 |
|
---|
[4584] | 297 | QMutableMapIterator<QString, t_allObs> it(_allObsMap);
|
---|
[4268] | 298 | while (it.hasNext()) {
|
---|
| 299 | it.next();
|
---|
[4584] | 300 | QString prn = it.key();
|
---|
[4679] | 301 | preparePlotData(prn, xyzSta, obsFile->interval(),
|
---|
[4675] | 302 | dataMP1, dataMP2, dataSNR1, dataSNR2);
|
---|
[4268] | 303 | }
|
---|
| 304 |
|
---|
[4706] | 305 | printReport(dataMP1, dataMP2, dataSNR1, dataSNR2);
|
---|
| 306 |
|
---|
[4718] | 307 | // Show the plots
|
---|
| 308 | // --------------
|
---|
[5068] | 309 | if (BNC_CORE->GUIenabled()) {
|
---|
[4718] | 310 | QFileInfo fileInfo(obsFile->fileName());
|
---|
| 311 | QByteArray title = fileInfo.fileName().toAscii();
|
---|
| 312 | emit dspSkyPlot(obsFile->fileName(), "MP1", dataMP1, "MP2", dataMP2,
|
---|
| 313 | "Meters", 2.0);
|
---|
| 314 | emit dspSkyPlot(obsFile->fileName(), "SNR1", dataSNR1, "SNR2", dataSNR2,
|
---|
| 315 | "", 9.0);
|
---|
| 316 | emit dspAvailPlot(obsFile->fileName(), title);
|
---|
| 317 | }
|
---|
| 318 | else {
|
---|
| 319 | for (int ii = 0; ii < dataMP1->size(); ii++) {
|
---|
| 320 | delete dataMP1->at(ii);
|
---|
| 321 | }
|
---|
| 322 | delete dataMP1;
|
---|
| 323 | for (int ii = 0; ii < dataMP2->size(); ii++) {
|
---|
| 324 | delete dataMP2->at(ii);
|
---|
| 325 | }
|
---|
| 326 | delete dataMP2;
|
---|
| 327 | for (int ii = 0; ii < dataSNR1->size(); ii++) {
|
---|
| 328 | delete dataSNR1->at(ii);
|
---|
| 329 | }
|
---|
| 330 | delete dataSNR1;
|
---|
| 331 | for (int ii = 0; ii < dataSNR2->size(); ii++) {
|
---|
| 332 | delete dataSNR2->at(ii);
|
---|
| 333 | }
|
---|
| 334 | delete dataSNR2;
|
---|
| 335 | _mutex.unlock();
|
---|
| 336 | }
|
---|
[4254] | 337 | }
|
---|
[4263] | 338 |
|
---|
| 339 | //
|
---|
| 340 | ////////////////////////////////////////////////////////////////////////////
|
---|
[4694] | 341 | t_irc t_reqcAnalyze::t_allObs::addObs(const t_obs& obs) {
|
---|
[4265] | 342 |
|
---|
[4584] | 343 | t_oneObs* newObs = new t_oneObs(obs.GPSWeek, obs.GPSWeeks);
|
---|
[4354] | 344 | bool okFlag = false;
|
---|
[4338] | 345 |
|
---|
[4608] | 346 | // Availability and Slip Flags
|
---|
| 347 | // ---------------------------
|
---|
[4424] | 348 | double L1 = obs.measdata("L1", 3.0);
|
---|
[4571] | 349 | if (L1 != 0) {
|
---|
| 350 | newObs->_hasL1 = true;
|
---|
| 351 | }
|
---|
[5136] | 352 | double L2 = obs.satSys == 'E' ? obs.measdata("L5", 3.0) : obs.measdata("L2", 3.0);;
|
---|
[4571] | 353 | if (L2 != 0) {
|
---|
| 354 | newObs->_hasL2 = true;
|
---|
| 355 | }
|
---|
[4608] | 356 | if (obs.slipL1) {
|
---|
| 357 | newObs->_slipL1 = true;
|
---|
| 358 | }
|
---|
| 359 | if (obs.slipL2) {
|
---|
| 360 | newObs->_slipL2 = true;
|
---|
| 361 | }
|
---|
| 362 |
|
---|
| 363 | // Compute the Multipath
|
---|
| 364 | // ----------------------
|
---|
[4391] | 365 | if (L1 != 0.0 && L2 != 0.0) {
|
---|
[4266] | 366 | double f1 = t_CST::f1(obs.satSys, obs.slotNum);
|
---|
[5136] | 367 | double f2 = obs.satSys == 'E' ? t_CST::freq5 : t_CST::f2(obs.satSys, obs.slotNum);
|
---|
[4266] | 368 |
|
---|
[4391] | 369 | L1 = L1 * t_CST::c / f1;
|
---|
| 370 | L2 = L2 * t_CST::c / f2;
|
---|
[4266] | 371 |
|
---|
[4424] | 372 | double P1 = obs.measdata("C1", 3.0);
|
---|
[4391] | 373 | if (P1 != 0.0) {
|
---|
| 374 | newObs->_MP1 = P1 - L1 - 2.0*f2*f2/(f1*f1-f2*f2) * (L1 - L2);
|
---|
[4354] | 375 | okFlag = true;
|
---|
[4268] | 376 | }
|
---|
[5136] | 377 | double P2 = obs.satSys == 'E' ? obs.measdata("C5", 3.0) : obs.measdata("C2", 3.0);
|
---|
[4391] | 378 | if (P2 != 0.0) {
|
---|
| 379 | newObs->_MP2 = P2 - L2 - 2.0*f1*f1/(f1*f1-f2*f2) * (L1 - L2);
|
---|
[4354] | 380 | okFlag = true;
|
---|
[4268] | 381 | }
|
---|
[4265] | 382 | }
|
---|
[4338] | 383 |
|
---|
[4559] | 384 | // Signal-to-Noise
|
---|
| 385 | // ---------------
|
---|
| 386 | double S1 = obs.measdata("S1", 3.0);
|
---|
| 387 | if (S1 != 0.0) {
|
---|
[4562] | 388 | newObs->_SNR1 = floor(S1/6);
|
---|
| 389 | if (newObs->_SNR1 > 9.0) {
|
---|
| 390 | newObs->_SNR1 = 9.0;
|
---|
| 391 | }
|
---|
| 392 | if (newObs->_SNR1 < 1.0) {
|
---|
| 393 | newObs->_SNR1 = 1.0;
|
---|
| 394 | }
|
---|
[4559] | 395 | okFlag = true;
|
---|
| 396 | }
|
---|
[4562] | 397 | else {
|
---|
| 398 | if (obs.snrL1 > 0) {
|
---|
| 399 | newObs->_SNR1 = obs.snrL1;
|
---|
| 400 | okFlag = true;
|
---|
| 401 | }
|
---|
| 402 | }
|
---|
[5136] | 403 | double S2 = obs.satSys == 'E' ? obs.measdata("S5", 3.0) : obs.measdata("S2", 3.0);
|
---|
[4559] | 404 | if (S2 != 0.0) {
|
---|
[4562] | 405 | newObs->_SNR2 = floor(S2/6);
|
---|
| 406 | if (newObs->_SNR2 > 9.0) {
|
---|
| 407 | newObs->_SNR2 = 9.0;
|
---|
| 408 | }
|
---|
| 409 | if (newObs->_SNR2 < 1.0) {
|
---|
| 410 | newObs->_SNR2 = 1.0;
|
---|
| 411 | }
|
---|
[4559] | 412 | okFlag = true;
|
---|
| 413 | }
|
---|
[4562] | 414 | else {
|
---|
| 415 | if (obs.snrL2 > 0) {
|
---|
| 416 | newObs->_SNR2 = obs.snrL2;
|
---|
| 417 | okFlag = true;
|
---|
| 418 | }
|
---|
| 419 | }
|
---|
[4559] | 420 |
|
---|
[4354] | 421 | // Remember the Observation
|
---|
| 422 | // ------------------------
|
---|
| 423 | if (okFlag) {
|
---|
[4584] | 424 | _oneObsVec << newObs;
|
---|
[4694] | 425 | return success;
|
---|
[4354] | 426 | }
|
---|
| 427 | else {
|
---|
| 428 | delete newObs;
|
---|
[4694] | 429 | return failure;
|
---|
[4354] | 430 | }
|
---|
[4263] | 431 | }
|
---|
[4350] | 432 |
|
---|
| 433 | //
|
---|
| 434 | ////////////////////////////////////////////////////////////////////////////
|
---|
[4679] | 435 | void t_reqcAnalyze::prepareObsStat(unsigned iEpo, double obsInterval,
|
---|
| 436 | const ColumnVector& xyzSta) {
|
---|
[4677] | 437 | const int sampl = int(30.0 / obsInterval);
|
---|
| 438 | if (iEpo % sampl == 0) {
|
---|
[4676] | 439 | double mjdX24 = _currEpo->tt.mjddec() * 24.0;
|
---|
| 440 | if (iEpo != 0) {
|
---|
| 441 | _obsStat._mjdX24 << mjdX24;
|
---|
| 442 | _obsStat._numSat << _obsStat._numSat.last();
|
---|
[4680] | 443 | _obsStat._PDOP << _obsStat._PDOP.last();
|
---|
[4676] | 444 | }
|
---|
| 445 | _obsStat._mjdX24 << mjdX24;
|
---|
[4675] | 446 | _obsStat._numSat << _currEpo->rnxSat.size();
|
---|
[4680] | 447 | _obsStat._PDOP << cmpDOP(xyzSta);
|
---|
[4675] | 448 | }
|
---|
| 449 | }
|
---|
| 450 |
|
---|
| 451 | //
|
---|
| 452 | ////////////////////////////////////////////////////////////////////////////
|
---|
[4679] | 453 | void t_reqcAnalyze::preparePlotData(const QString& prn,
|
---|
| 454 | const ColumnVector& xyzSta,
|
---|
[4572] | 455 | double obsInterval,
|
---|
| 456 | QVector<t_polarPoint*>* dataMP1,
|
---|
| 457 | QVector<t_polarPoint*>* dataMP2,
|
---|
| 458 | QVector<t_polarPoint*>* dataSNR1,
|
---|
[4675] | 459 | QVector<t_polarPoint*>* dataSNR2) {
|
---|
[4350] | 460 |
|
---|
[4544] | 461 | const int chunkStep = int( 30.0 / obsInterval); // chunk step (30 sec)
|
---|
| 462 | const int numEpo = int(600.0 / obsInterval); // # epochs in one chunk (10 min)
|
---|
[4350] | 463 |
|
---|
[4584] | 464 | t_allObs& allObs = _allObsMap[prn];
|
---|
| 465 |
|
---|
[5141] | 466 | bncSettings settings;
|
---|
| 467 | QString reqSkyPlotSystems = settings.value("reqcSkyPlotSystems").toString();
|
---|
| 468 | bool plotGPS = false;
|
---|
| 469 | bool plotGlo = false;
|
---|
| 470 | bool plotGal = false;
|
---|
| 471 | if (reqSkyPlotSystems == "GPS") {
|
---|
| 472 | plotGPS = true;
|
---|
| 473 | }
|
---|
| 474 | else if (reqSkyPlotSystems == "GLONASS") {
|
---|
| 475 | plotGlo = true;
|
---|
| 476 | }
|
---|
| 477 | else if (reqSkyPlotSystems == "Galileo") {
|
---|
| 478 | plotGal = true;
|
---|
| 479 | }
|
---|
| 480 | else {
|
---|
| 481 | plotGPS = true;
|
---|
| 482 | plotGlo = true;
|
---|
| 483 | plotGal = true;
|
---|
| 484 | }
|
---|
| 485 |
|
---|
[4591] | 486 | // Loop over all Chunks of Data
|
---|
| 487 | // ----------------------------
|
---|
[4702] | 488 | bool slipFound = false;
|
---|
[4584] | 489 | for (int chunkStart = 0; chunkStart + numEpo < allObs._oneObsVec.size();
|
---|
[4361] | 490 | chunkStart += chunkStep) {
|
---|
[4351] | 491 |
|
---|
[4703] | 492 | if (chunkStart * chunkStep == numEpo) {
|
---|
[4702] | 493 | slipFound = false;
|
---|
| 494 | }
|
---|
| 495 |
|
---|
[4675] | 496 | // Chunk-Specific Variables
|
---|
| 497 | // ------------------------
|
---|
[4591] | 498 | bncTime currTime;
|
---|
| 499 | bncTime prevTime;
|
---|
[4590] | 500 | bncTime chunkStartTime;
|
---|
[4675] | 501 | double mjdX24 = 0.0;
|
---|
[4607] | 502 | bool availL1 = false;
|
---|
| 503 | bool availL2 = false;
|
---|
| 504 | bool gapL1 = false;
|
---|
| 505 | bool gapL2 = false;
|
---|
| 506 | bool slipL1 = false;
|
---|
| 507 | bool slipL2 = false;
|
---|
| 508 | double meanMP1 = 0.0;
|
---|
| 509 | double meanMP2 = 0.0;
|
---|
| 510 | double minSNR1 = 0.0;
|
---|
| 511 | double minSNR2 = 0.0;
|
---|
| 512 | double aziDeg = 0.0;
|
---|
| 513 | double zenDeg = 0.0;
|
---|
[4659] | 514 | bool zenFlag = false;
|
---|
[4353] | 515 |
|
---|
[4591] | 516 | // Loop over all Epochs within one Chunk of Data
|
---|
| 517 | // ---------------------------------------------
|
---|
[5140] | 518 | bool slotSet = false;
|
---|
[4361] | 519 | for (int ii = 0; ii < numEpo; ii++) {
|
---|
[4351] | 520 | int iEpo = chunkStart + ii;
|
---|
[4584] | 521 | const t_oneObs* oneObs = allObs._oneObsVec[iEpo];
|
---|
[5140] | 522 | if (oneObs->_slotSet) {
|
---|
| 523 | slotSet = true;
|
---|
| 524 | }
|
---|
[4572] | 525 |
|
---|
[4590] | 526 | currTime.set(oneObs->_GPSWeek, oneObs->_GPSWeeks);
|
---|
| 527 |
|
---|
| 528 | // Compute the Azimuth and Zenith Distance
|
---|
| 529 | // ---------------------------------------
|
---|
[4572] | 530 | if (ii == 0) {
|
---|
[4590] | 531 | chunkStartTime = currTime;
|
---|
[4675] | 532 | mjdX24 = chunkStartTime.mjddec() * 24.0;
|
---|
[4590] | 533 |
|
---|
[4679] | 534 | if (xyzSta.size()) {
|
---|
[4590] | 535 | t_eph* eph = 0;
|
---|
| 536 | for (int ie = 0; ie < _ephs.size(); ie++) {
|
---|
[5776] | 537 | if (QString(_ephs[ie]->prn().toString().c_str()) == prn) {
|
---|
[4590] | 538 | eph = _ephs[ie];
|
---|
| 539 | break;
|
---|
| 540 | }
|
---|
| 541 | }
|
---|
| 542 |
|
---|
| 543 | if (eph) {
|
---|
| 544 | double xSat, ySat, zSat, clkSat;
|
---|
| 545 | eph->position(oneObs->_GPSWeek, oneObs->_GPSWeeks,
|
---|
| 546 | xSat, ySat, zSat, clkSat);
|
---|
| 547 |
|
---|
| 548 | double rho, eleSat, azSat;
|
---|
[4679] | 549 | topos(xyzSta(1), xyzSta(2), xyzSta(3),
|
---|
| 550 | xSat, ySat, zSat, rho, eleSat, azSat);
|
---|
[4590] | 551 |
|
---|
| 552 | aziDeg = azSat * 180.0/M_PI;
|
---|
| 553 | zenDeg = 90.0 - eleSat * 180.0/M_PI;
|
---|
[4659] | 554 | zenFlag = true;
|
---|
[4590] | 555 | }
|
---|
| 556 | }
|
---|
[4572] | 557 | }
|
---|
[4675] | 558 |
|
---|
[4590] | 559 | // Check Interval
|
---|
| 560 | // --------------
|
---|
| 561 | if (prevTime.valid()) {
|
---|
[4591] | 562 | double dt = currTime - prevTime;
|
---|
| 563 | if (dt != obsInterval) {
|
---|
| 564 | gapL1 = true;
|
---|
| 565 | gapL2 = true;
|
---|
| 566 | }
|
---|
[4590] | 567 | }
|
---|
| 568 | prevTime = currTime;
|
---|
[4563] | 569 |
|
---|
[4590] | 570 | // Check L1 and L2 availability
|
---|
| 571 | // ----------------------------
|
---|
| 572 | if (oneObs->_hasL1) {
|
---|
| 573 | availL1 = true;
|
---|
[4566] | 574 | }
|
---|
[4590] | 575 | else {
|
---|
[4591] | 576 | gapL1 = true;
|
---|
[4566] | 577 | }
|
---|
[4590] | 578 | if (oneObs->_hasL2) {
|
---|
| 579 | availL2 = true;
|
---|
| 580 | }
|
---|
| 581 | else {
|
---|
[4591] | 582 | gapL2 = true;
|
---|
[4590] | 583 | }
|
---|
| 584 |
|
---|
| 585 | // Check Minimal Signal-to-Noise Ratio
|
---|
| 586 | // -----------------------------------
|
---|
| 587 | if ( oneObs->_SNR1 > 0 && (minSNR1 == 0 || minSNR1 > oneObs->_SNR1) ) {
|
---|
| 588 | minSNR1 = oneObs->_SNR1;
|
---|
| 589 | }
|
---|
| 590 | if ( oneObs->_SNR2 > 0 && (minSNR2 == 0 || minSNR2 > oneObs->_SNR2) ) {
|
---|
| 591 | minSNR2 = oneObs->_SNR2;
|
---|
| 592 | }
|
---|
| 593 |
|
---|
[4607] | 594 | // Check Slip Flags
|
---|
| 595 | // ----------------
|
---|
| 596 | if (oneObs->_slipL1) {
|
---|
| 597 | slipL1 = true;
|
---|
| 598 | }
|
---|
| 599 | if (oneObs->_slipL2) {
|
---|
| 600 | slipL2 = true;
|
---|
| 601 | }
|
---|
| 602 |
|
---|
[4698] | 603 | meanMP1 += oneObs->_MP1;
|
---|
| 604 | meanMP2 += oneObs->_MP2;
|
---|
| 605 | }
|
---|
| 606 |
|
---|
| 607 | // Compute the Multipath
|
---|
| 608 | // ---------------------
|
---|
[5141] | 609 | if ( (prn[0] == 'G' && plotGPS ) ||
|
---|
| 610 | (prn[0] == 'R' && plotGlo && slotSet) ||
|
---|
| 611 | (prn[0] == 'E' && plotGal ) ) {
|
---|
[4700] | 612 | bool slipMP = false;
|
---|
| 613 | meanMP1 /= numEpo;
|
---|
| 614 | meanMP2 /= numEpo;
|
---|
| 615 | double MP1 = 0.0;
|
---|
| 616 | double MP2 = 0.0;
|
---|
| 617 | for (int ii = 0; ii < numEpo; ii++) {
|
---|
| 618 | int iEpo = chunkStart + ii;
|
---|
| 619 | const t_oneObs* oneObs = allObs._oneObsVec[iEpo];
|
---|
| 620 | double diff1 = oneObs->_MP1 - meanMP1;
|
---|
| 621 | double diff2 = oneObs->_MP2 - meanMP2;
|
---|
| 622 |
|
---|
| 623 | // Check Slip Threshold
|
---|
| 624 | // --------------------
|
---|
| 625 | if (fabs(diff1) > SLIPTRESH || fabs(diff2) > SLIPTRESH) {
|
---|
| 626 | slipMP = true;
|
---|
| 627 | break;
|
---|
| 628 | }
|
---|
| 629 |
|
---|
| 630 | MP1 += diff1 * diff1;
|
---|
| 631 | MP2 += diff2 * diff2;
|
---|
[4353] | 632 | }
|
---|
[4700] | 633 | if (slipMP) {
|
---|
| 634 | slipL1 = true;
|
---|
| 635 | slipL2 = true;
|
---|
[4702] | 636 | if (!slipFound) {
|
---|
| 637 | slipFound = true;
|
---|
| 638 | _obsStat._prnStat[prn]._numSlipsFound += 1;
|
---|
| 639 | }
|
---|
[4700] | 640 | }
|
---|
| 641 | else {
|
---|
| 642 | MP1 = sqrt(MP1 / (numEpo-1));
|
---|
| 643 | MP2 = sqrt(MP2 / (numEpo-1));
|
---|
| 644 | (*dataMP1) << (new t_polarPoint(aziDeg, zenDeg, MP1));
|
---|
| 645 | (*dataMP2) << (new t_polarPoint(aziDeg, zenDeg, MP2));
|
---|
| 646 | }
|
---|
[4353] | 647 | }
|
---|
| 648 |
|
---|
[4590] | 649 | // Availability Plot Data
|
---|
| 650 | // ----------------------
|
---|
| 651 | if (availL1) {
|
---|
[4607] | 652 | if (slipL1) {
|
---|
[4617] | 653 | _availDataMap[prn]._L1slip << mjdX24;
|
---|
[4591] | 654 | }
|
---|
| 655 | else if (gapL1) {
|
---|
[4617] | 656 | _availDataMap[prn]._L1gap << mjdX24;
|
---|
[4591] | 657 | }
|
---|
| 658 | else {
|
---|
[4617] | 659 | _availDataMap[prn]._L1ok << mjdX24;
|
---|
[4591] | 660 | }
|
---|
[4351] | 661 | }
|
---|
[4591] | 662 | if (availL2) {
|
---|
[4607] | 663 | if (slipL2) {
|
---|
[4617] | 664 | _availDataMap[prn]._L2slip << mjdX24;
|
---|
[4591] | 665 | }
|
---|
| 666 | else if (gapL2) {
|
---|
[4617] | 667 | _availDataMap[prn]._L2gap << mjdX24;
|
---|
[4591] | 668 | }
|
---|
| 669 | else {
|
---|
[4617] | 670 | _availDataMap[prn]._L2ok << mjdX24;
|
---|
[4591] | 671 | }
|
---|
| 672 | }
|
---|
[4659] | 673 | if (zenFlag) {
|
---|
[4662] | 674 | _availDataMap[prn]._eleTim << mjdX24;
|
---|
| 675 | _availDataMap[prn]._eleDeg << 90.0 - zenDeg;
|
---|
[4659] | 676 | }
|
---|
[4351] | 677 |
|
---|
[5142] | 678 | // Signal-to-Noise Ratio Plot Data
|
---|
| 679 | // -------------------------------
|
---|
[5143] | 680 | if ( (prn[0] == 'G' && plotGPS) ||
|
---|
| 681 | (prn[0] == 'R' && plotGlo) ||
|
---|
| 682 | (prn[0] == 'E' && plotGal) ) {
|
---|
[5141] | 683 | (*dataSNR1) << (new t_polarPoint(aziDeg, zenDeg, minSNR1));
|
---|
| 684 | (*dataSNR2) << (new t_polarPoint(aziDeg, zenDeg, minSNR2));
|
---|
| 685 | }
|
---|
[4350] | 686 | }
|
---|
| 687 | }
|
---|
[4572] | 688 |
|
---|
| 689 | //
|
---|
| 690 | ////////////////////////////////////////////////////////////////////////////
|
---|
| 691 | void t_reqcAnalyze::slotDspAvailPlot(const QString& fileName,
|
---|
[4584] | 692 | const QByteArray& title) {
|
---|
[4572] | 693 |
|
---|
[5068] | 694 | if (BNC_CORE->GUIenabled()) {
|
---|
[4659] | 695 | t_availPlot* plotA = new t_availPlot(0, &_availDataMap);
|
---|
| 696 | plotA->setTitle(title);
|
---|
[4573] | 697 |
|
---|
[4662] | 698 | t_elePlot* plotZ = new t_elePlot(0, &_availDataMap);
|
---|
[4659] | 699 |
|
---|
[4672] | 700 | t_dopPlot* plotD = new t_dopPlot(0, &_obsStat);
|
---|
[4671] | 701 |
|
---|
[4573] | 702 | QVector<QWidget*> plots;
|
---|
[4671] | 703 | plots << plotA << plotZ << plotD;
|
---|
[4573] | 704 | t_graphWin* graphWin = new t_graphWin(0, fileName, plots, 0, 0);
|
---|
[4666] | 705 |
|
---|
| 706 | int ww = QFontMetrics(graphWin->font()).width('w');
|
---|
| 707 | graphWin->setMinimumSize(120*ww, 40*ww);
|
---|
| 708 |
|
---|
[4573] | 709 | graphWin->show();
|
---|
| 710 |
|
---|
| 711 | bncSettings settings;
|
---|
| 712 | QString dirName = settings.value("reqcPlotDir").toString();
|
---|
| 713 | if (!dirName.isEmpty()) {
|
---|
[4606] | 714 | QByteArray ext = "_A.png";
|
---|
[4579] | 715 | graphWin->savePNG(dirName, ext);
|
---|
[4573] | 716 | }
|
---|
| 717 | }
|
---|
[4715] | 718 | _mutex.unlock();
|
---|
[4572] | 719 | }
|
---|
[4679] | 720 |
|
---|
| 721 | // Compute Dilution of Precision
|
---|
| 722 | ////////////////////////////////////////////////////////////////////////////
|
---|
| 723 | double t_reqcAnalyze::cmpDOP(const ColumnVector& xyzSta) const {
|
---|
| 724 |
|
---|
| 725 | if (xyzSta.size() != 3) {
|
---|
| 726 | return 0.0;
|
---|
| 727 | }
|
---|
| 728 |
|
---|
| 729 | unsigned nSat = _currEpo->rnxSat.size();
|
---|
| 730 |
|
---|
| 731 | if (nSat < 4) {
|
---|
| 732 | return 0.0;
|
---|
| 733 | }
|
---|
| 734 |
|
---|
| 735 | Matrix AA(nSat, 4);
|
---|
| 736 |
|
---|
| 737 | unsigned nSatUsed = 0;
|
---|
| 738 | for (unsigned iSat = 0; iSat < nSat; iSat++) {
|
---|
| 739 |
|
---|
| 740 | const t_rnxObsFile::t_rnxSat& rnxSat = _currEpo->rnxSat[iSat];
|
---|
| 741 |
|
---|
| 742 | QString prn = QString("%1%2").arg(rnxSat.satSys)
|
---|
| 743 | .arg(rnxSat.satNum, 2, 10, QChar('0'));
|
---|
| 744 |
|
---|
| 745 | t_eph* eph = 0;
|
---|
| 746 | for (int ie = 0; ie < _ephs.size(); ie++) {
|
---|
[5776] | 747 | if (QString(_ephs[ie]->prn().toString().c_str()) == prn) {
|
---|
[4679] | 748 | eph = _ephs[ie];
|
---|
| 749 | break;
|
---|
| 750 | }
|
---|
| 751 | }
|
---|
| 752 | if (eph) {
|
---|
| 753 | ++nSatUsed;
|
---|
| 754 | ColumnVector xSat(3);
|
---|
| 755 | double clkSat;
|
---|
| 756 | eph->position(_currEpo->tt.gpsw(), _currEpo->tt.gpssec(),
|
---|
| 757 | xSat(1), xSat(2), xSat(3), clkSat);
|
---|
| 758 | ColumnVector dx = xSat - xyzSta;
|
---|
[4681] | 759 | double rho = dx.norm_Frobenius();
|
---|
| 760 | AA(nSatUsed,1) = dx(1) / rho;
|
---|
| 761 | AA(nSatUsed,2) = dx(2) / rho;
|
---|
| 762 | AA(nSatUsed,3) = dx(3) / rho;
|
---|
| 763 | AA(nSatUsed,4) = 1.0;
|
---|
[4679] | 764 | }
|
---|
[4681] | 765 | }
|
---|
[4679] | 766 |
|
---|
[4681] | 767 | if (nSatUsed < 4) {
|
---|
| 768 | return 0.0;
|
---|
[4679] | 769 | }
|
---|
| 770 |
|
---|
[4681] | 771 | AA = AA.Rows(1, nSatUsed);
|
---|
| 772 |
|
---|
| 773 | SymmetricMatrix QQ;
|
---|
| 774 | QQ << AA.t() * AA;
|
---|
| 775 | QQ = QQ.i();
|
---|
| 776 |
|
---|
| 777 | return sqrt(QQ.trace());
|
---|
[4679] | 778 | }
|
---|
[4689] | 779 |
|
---|
| 780 | // Finish the report
|
---|
| 781 | ////////////////////////////////////////////////////////////////////////////
|
---|
[4696] | 782 | void t_reqcAnalyze::printReport(QVector<t_polarPoint*>* dataMP1,
|
---|
| 783 | QVector<t_polarPoint*>* dataMP2,
|
---|
| 784 | QVector<t_polarPoint*>* dataSNR1,
|
---|
| 785 | QVector<t_polarPoint*>* dataSNR2) {
|
---|
[5368] | 786 |
|
---|
[4689] | 787 | if (!_log) {
|
---|
| 788 | return;
|
---|
| 789 | }
|
---|
| 790 |
|
---|
[4701] | 791 | *_log << "Marker name: " << _obsStat._markerName << endl
|
---|
| 792 | << "Receiver: " << _obsStat._receiverType << endl
|
---|
| 793 | << "Antenna: " << _obsStat._antennaName << endl
|
---|
| 794 | << "Start time: " << _obsStat._startTime.datestr().c_str() << ' '
|
---|
| 795 | << _obsStat._startTime.timestr().c_str() << endl
|
---|
| 796 | << "End time: " << _obsStat._endTime.datestr().c_str() << ' '
|
---|
| 797 | << _obsStat._endTime.timestr().c_str() << endl
|
---|
| 798 | << "Interval: " << _obsStat._interval << endl
|
---|
| 799 | << "# Sat.: " << _obsStat._prnStat.size() << endl;
|
---|
[4689] | 800 |
|
---|
[4701] | 801 | int numObs = 0;
|
---|
| 802 | int numSlipsFlagged = 0;
|
---|
| 803 | int numSlipsFound = 0;
|
---|
[4693] | 804 | QMapIterator<QString, t_prnStat> it(_obsStat._prnStat);
|
---|
| 805 | while (it.hasNext()) {
|
---|
| 806 | it.next();
|
---|
| 807 | const t_prnStat& prnStat = it.value();
|
---|
[4701] | 808 | numObs += prnStat._numObs;
|
---|
| 809 | numSlipsFlagged += prnStat._numSlipsFlagged;
|
---|
| 810 | numSlipsFound += prnStat._numSlipsFound;
|
---|
[4693] | 811 | }
|
---|
[4701] | 812 | *_log << "# Obs.: " << numObs << endl
|
---|
| 813 | << "# Slips (file): " << numSlipsFlagged << endl
|
---|
| 814 | << "# Slips (found): " << numSlipsFound << endl;
|
---|
[4693] | 815 |
|
---|
[4697] | 816 | for (int kk = 1; kk <= 4; kk++) {
|
---|
| 817 | QVector<t_polarPoint*>* data = 0;
|
---|
| 818 | QString text;
|
---|
| 819 | if (kk == 1) {
|
---|
| 820 | data = dataMP1;
|
---|
[4701] | 821 | text = "Mean MP1: ";
|
---|
[4697] | 822 | }
|
---|
| 823 | else if (kk == 2) {
|
---|
| 824 | data = dataMP2;
|
---|
[4701] | 825 | text = "Mean MP2: ";
|
---|
[4697] | 826 | }
|
---|
| 827 | else if (kk == 3) {
|
---|
| 828 | data = dataSNR1;
|
---|
[4701] | 829 | text = "Mean SNR1: ";
|
---|
[4697] | 830 | }
|
---|
| 831 | else if (kk == 4) {
|
---|
| 832 | data = dataSNR2;
|
---|
[4701] | 833 | text = "Mean SNR2: ";
|
---|
[4697] | 834 | }
|
---|
| 835 | double mean = 0.0;
|
---|
| 836 | for (int ii = 0; ii < data->size(); ii++) {
|
---|
| 837 | const t_polarPoint* point = data->at(ii);
|
---|
| 838 | mean += point->_value;
|
---|
| 839 | }
|
---|
| 840 | mean /= data->size();
|
---|
| 841 | *_log << text << mean << endl;
|
---|
| 842 | }
|
---|
| 843 |
|
---|
[4689] | 844 | _log->flush();
|
---|
| 845 | }
|
---|