source: ntrip/trunk/BNC/src/rinex/rnxnavfile.cpp@ 10575

Last change on this file since 10575 was 10574, checked in by stuerze, 3 months ago

minor changes regarding RINEX4 navgation file reading
File size: 11.9 KB
Line 
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_rnxNavFile
30 *
31 * Purpose: Reads RINEX Navigation File
32 *
33 * Author: L. Mervart
34 *
35 * Created: 24-Jan-2012
36 *
37 * Changes:
38 *
39 * -----------------------------------------------------------------------*/
40
41#include <iostream>
42#include <newmatio.h>
43#include "rnxnavfile.h"
44#include "bnccore.h"
45#include "bncutils.h"
46#include "ephemeris.h"
47
48using namespace std;
49
50// Constructor
51////////////////////////////////////////////////////////////////////////////
52t_rnxNavFile::t_rnxNavHeader::t_rnxNavHeader() {
53 _version = 0.0;
54 _glonass = false;
55}
56
57// Destructor
58////////////////////////////////////////////////////////////////////////////
59t_rnxNavFile::t_rnxNavHeader::~t_rnxNavHeader() {
60}
61
62// Read Header
63////////////////////////////////////////////////////////////////////////////
64t_irc t_rnxNavFile::t_rnxNavHeader::read(QTextStream* stream) {
65 while (stream->status() == QTextStream::Ok && !stream->atEnd()) {
66 QString line = stream->readLine();
67 if (line.isEmpty()) {
68 continue;
69 }
70 QString value = line.left(60).trimmed();
71 QString key = line.mid(60).trimmed();
72 if (key == "END OF HEADER") {
73 break;
74 }
75 else if (key == "RINEX VERSION / TYPE") {
76 QTextStream in(value.toLatin1(), QIODevice::ReadOnly);
77 in >> _version;
78 if (value.indexOf("GLONASS") != -1) {
79 _glonass = true;
80 }
81 }
82 else if (key == "COMMENT") {
83 _comments.append(value.trimmed());
84 }
85 else if (key == "PGM / RUN BY / DATE") {
86 _runByDate.append(value.trimmed());
87 }
88 }
89
90 return success;
91}
92
93// Constructor
94////////////////////////////////////////////////////////////////////////////
95t_rnxNavFile::t_rnxNavFile(const QString& fileName, e_inpOut inpOut) {
96 _inpOut = inpOut;
97 _stream = 0;
98 _file = 0;
99 if (_inpOut == input) {
100 openRead(fileName);
101 }
102 else {
103 openWrite(fileName);
104 }
105}
106
107// Open for input
108////////////////////////////////////////////////////////////////////////////
109void t_rnxNavFile::openRead(const QString& fileName) {
110
111 _fileName = fileName; expandEnvVar(_fileName);
112 _file = new QFile(_fileName);
113 _file->open(QIODevice::ReadOnly | QIODevice::Text);
114 _stream = new QTextStream();
115 _stream->setDevice(_file);
116
117 _header.read(_stream);
118 this->read(_stream);
119}
120
121// Open for output
122////////////////////////////////////////////////////////////////////////////
123void t_rnxNavFile::openWrite(const QString& fileName) {
124
125 _fileName = fileName; expandEnvVar(_fileName);
126 _file = new QFile(_fileName);
127 _file->open(QIODevice::WriteOnly | QIODevice::Text);
128 _stream = new QTextStream();
129 _stream->setDevice(_file);
130}
131
132// Destructor
133////////////////////////////////////////////////////////////////////////////
134t_rnxNavFile::~t_rnxNavFile() {
135 close();
136 for (unsigned ii = 0; ii < _ephs.size(); ii++) {
137 delete _ephs[ii];
138 }
139}
140
141// Close
142////////////////////////////////////////////////////////////////////////////
143void t_rnxNavFile::close() {
144 delete _stream; _stream = 0;
145 delete _file; _file = 0;
146}
147
148// Read File Content
149////////////////////////////////////////////////////////////////////////////
150void t_rnxNavFile::read(QTextStream* stream) {
151 QString navType;
152
153 while (stream->status() == QTextStream::Ok && !stream->atEnd()) {
154
155 QString line = stream->readLine();
156 if (line.isEmpty()) {
157 continue;
158 }
159
160 QStringList hlp = line.split(QRegExp("\\s+"), Qt::SkipEmptyParts);
161 QString key, prn, navSubType;
162 char sys;
163
164 QString firstStr = hlp.at(0);
165 if (version() >= 3.0 && firstStr != ">") {
166 prn = firstStr;
167 sys = prn[0].toLatin1();
168 }
169 else if (version() >= 4.0 && firstStr == ">") {
170 key = hlp.at(1);
171 prn = hlp.at(2);
172 sys = prn[0].toLatin1();
173 navType = hlp.at(3);
174
175 // ALL Non-EPH messages are currently ignored
176 int lines2skip = 0;
177 // STO
178 if (key == "STO") {
179 lines2skip = 2;
180 }
181 // EOP
182 else if (key == "EOP") {
183 lines2skip = 3;
184 }
185 // ION
186 else if (key == "ION") {
187 if (sys == 'R') {
188 lines2skip = 1; //if (navType == "LXOC") {}
189 }
190 else if (sys == 'E') {
191 lines2skip = 2;
192 }
193 else if (sys == 'G' || sys == 'C' ||
194 sys == 'J' || sys == 'I') {
195 lines2skip = 3;
196 if (sys == 'I' && navType == "L1NV" || // I: KLOB, NEQN
197 sys == 'J' && navType == "CNVX") { // J: WIDE, JAPN
198 navSubType = hlp.at(4);
199 if (navSubType == "KLOB") {
200 lines2skip += 1;
201 }
202 else if (navSubType == "NEQN") {
203 lines2skip += 4;
204 }
205 }
206 }
207 }
208 if (lines2skip) {
209 for (int ii = 1; ii <= lines2skip; ii++) {
210 stream->readLine();
211 }
212 }
213 continue;
214 }
215 else {
216 if (glonass()) {
217 prn = QString("R%1_0").arg(hlp.at(0).toInt(), 2, 10, QChar('0'));
218 }
219 else {
220 prn = QString("G%1_0").arg(hlp.at(0).toInt(), 2, 10, QChar('0'));
221 }
222 }
223
224 t_eph* eph = 0;
225 QStringList lines;
226 lines << line;
227 if (sys == 'G') {
228 for (int ii = 1; ii < 8; ii++) {
229 lines << stream->readLine();
230 }
231 eph = new t_ephGPS(version(), lines);
232 }
233 else if (sys == 'R') {
234 int num = 4;
235 if (version() >= 3.05) {
236 num += 1;
237 }
238 for (int ii = 1; ii < num; ii++) {
239 lines << stream->readLine();
240 }
241 eph = new t_ephGlo(version(), lines);
242 }
243 else if (sys == 'E') {
244 for (int ii = 1; ii < 8; ii++) {
245 lines << stream->readLine();
246 }
247 eph = new t_ephGal(version(), lines);
248 }
249 else if (sys == 'J') {
250 for (int ii = 1; ii < 8; ii++) {
251 lines << stream->readLine();
252 }
253 eph = new t_ephGPS(version(), lines);
254 }
255 else if (sys== 'S') {
256 for (int ii = 1; ii < 4; ii++) {
257 lines << stream->readLine();
258 }
259 eph = new t_ephSBAS(version(), lines);
260 }
261 else if (sys == 'C') {
262 for (int ii = 1; ii < 8; ii++) {
263 lines << stream->readLine();
264 }
265 eph = new t_ephBDS(version(), lines);
266 }
267 else if (sys == 'I') {
268 for (int ii = 1; ii < 8; ii++) {
269 lines << stream->readLine();
270 }
271 eph = new t_ephGPS(version(), lines);
272 }
273
274 if (version() >= 4.0 && key == "EPH") {
275 if (eph->setNavType(navType) != success) {
276 delete eph;
277 continue;
278 }
279 }
280
281 if (eph) {
282 _ephs.push_back(eph);
283 }
284 }
285}
286
287// Read Next Ephemeris
288////////////////////////////////////////////////////////////////////////////
289t_eph* t_rnxNavFile::getNextEph(const bncTime& tt,
290 const QMap<QString, unsigned int>* corrIODs) {
291
292 // Get Ephemeris according to IOD
293 // ------------------------------
294 if (corrIODs) {
295 QMapIterator<QString, unsigned int> itIOD(*corrIODs);
296 while (itIOD.hasNext()) {
297 itIOD.next();
298 QString prn = itIOD.key();
299 unsigned int iod = itIOD.value();
300 vector<t_eph*>::iterator it = _ephs.begin();
301 while (it != _ephs.end()) {
302 t_eph* eph = *it;
303 double dt = eph->TOC() - tt;
304 if (dt < 8*3600.0 && QString(eph->prn().toInternalString().c_str()) == prn && eph->IOD() == iod) {
305 it = _ephs.erase(it);
306 return eph;
307 }
308 ++it;
309 }
310 }
311 }
312
313 // Get Ephemeris according to time
314 // -------------------------------
315 else {
316 vector<t_eph*>::iterator it = _ephs.begin();
317 while (it != _ephs.end()) {
318 t_eph* eph = *it;
319 double dt = eph->TOC() - tt;
320 if (dt < 2*3600.0) {
321 it = _ephs.erase(it);
322 return eph;
323 }
324 ++it;
325 }
326 }
327
328 return 0;
329}
330
331//
332////////////////////////////////////////////////////////////////////////////
333void t_rnxNavFile::writeHeader(const QMap<QString, QString>* txtMap, int numMergedFiles, int leapSecs) {
334
335 QString runBy = BNC_CORE->userName();
336 QStringList comments;
337 QStringList runByDate;
338
339 if (txtMap) {
340 QMapIterator<QString, QString> it(*txtMap);
341 while (it.hasNext()) {
342 it.next();
343 if (it.key() == "RUN BY") {
344 runBy = it.value();
345 }
346 else if (it.key() == "RUN BY DATE") {
347 runByDate = it.value().split("\\n", Qt::SkipEmptyParts);
348 }
349 else if (it.key() == "COMMENT") {
350 comments = it.value().split("\\n", Qt::SkipEmptyParts);
351 }
352 }
353 }
354
355 if (version() < 3.0) {
356 const QString fmt = glonass() ? "%1 GLONASS navigation data"
357 : "%1 Navigation data";
358 *_stream << QString(fmt)
359 .arg(_header._version, 9, 'f', 2)
360 .leftJustified(60)
361 << "RINEX VERSION / TYPE\n";
362 }
363 else {
364 QString fmt;
365 t_eph::e_type sys = satSystem();
366 switch(sys) {
367 case t_eph::GPS:
368 fmt.append("%1 N: GNSS NAV DATA G: GPS");
369 break;
370 case t_eph::GLONASS:
371 fmt.append("%1 N: GNSS NAV DATA R: GLONASS");
372 break;
373 case t_eph::Galileo:
374 fmt.append("%1 N: GNSS NAV DATA E: Galileo");
375 break;
376 case t_eph::QZSS:
377 fmt.append("%1 N: GNSS NAV DATA J: QZSS");
378 break;
379 case t_eph::BDS:
380 fmt.append("%1 N: GNSS NAV DATA C: BDS");
381 break;
382 case t_eph::IRNSS:
383 fmt.append("%1 N: GNSS NAV DATA I: IRNSS");
384 break;
385 case t_eph::SBAS:
386 fmt.append("%1 N: GNSS NAV DATA S: SBAS");
387 break;
388 case t_eph::unknown:
389 fmt.append("%1 N: GNSS NAV DATA M: MIXED");
390 break;
391 }
392 *_stream << fmt
393 .arg(_header._version, 9, 'f', 2)
394 .leftJustified(60)
395 << "RINEX VERSION / TYPE\n";
396 }
397
398 const QString fmtDate = (version() < 3.0) ? "dd-MMM-yy hh:mm"
399 : "yyyyMMdd hhmmss UTC";
400 *_stream << QString("%1%2%3")
401 .arg(BNC_CORE->pgmName(), -20)
402 .arg(runBy.trimmed().left(20), -20)
403 .arg(QDateTime::currentDateTime().toUTC().toString(fmtDate), -20)
404 .leftJustified(60)
405 << "PGM / RUN BY / DATE\n";
406
407 if (version() >= 4.0) {
408 QStringListIterator itRunByDt(runByDate);
409 while (itRunByDt.hasNext()) {
410 *_stream << itRunByDt.next().trimmed().left(60).leftJustified(60)
411 << "PGM / RUN BY / DATE\n";
412 }
413 *_stream << QString("%1").arg(leapSecs, 6, 10, QLatin1Char(' ')).left(60).leftJustified(60)
414 << "LEAP SECONDS\n";
415
416 *_stream << QString("%1").arg(numMergedFiles, 19, 10, QLatin1Char(' ')).leftJustified(60)
417 << "MERGED FILE\n";
418 }
419
420 QStringListIterator itCmnt(comments);
421 while (itCmnt.hasNext()) {
422 *_stream << itCmnt.next().trimmed().left(60).leftJustified(60) << "COMMENT\n";
423 }
424
425 *_stream << QString()
426 .leftJustified(60)
427 << "END OF HEADER\n";
428}
429
430//
431////////////////////////////////////////////////////////////////////////////
432void t_rnxNavFile::writeEph(const t_eph* eph) {
433 *_stream << eph->toString(version());
434}
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