source: ntrip/trunk/BNC/src/rinex/rnxnavfile.cpp@ 9765

Last change on this file since 9765 was 9765, checked in by stuerze, 2 months ago

some more changes to consider RINEX Version 4 nav file (EPH key only)

File size: 10.8 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 }
86
87 return success;
88}
89
90// Constructor
91////////////////////////////////////////////////////////////////////////////
92t_rnxNavFile::t_rnxNavFile(const QString& fileName, e_inpOut inpOut) {
93 _inpOut = inpOut;
94 _stream = 0;
95 _file = 0;
96 if (_inpOut == input) {
97 openRead(fileName);
98 }
99 else {
100 openWrite(fileName);
101 }
102}
103
104// Open for input
105////////////////////////////////////////////////////////////////////////////
106void t_rnxNavFile::openRead(const QString& fileName) {
107
108 _fileName = fileName; expandEnvVar(_fileName);
109 _file = new QFile(_fileName);
110 _file->open(QIODevice::ReadOnly | QIODevice::Text);
111 _stream = new QTextStream();
112 _stream->setDevice(_file);
113
114 _header.read(_stream);
115 this->read(_stream);
116}
117
118// Open for output
119////////////////////////////////////////////////////////////////////////////
120void t_rnxNavFile::openWrite(const QString& fileName) {
121
122 _fileName = fileName; expandEnvVar(_fileName);
123 _file = new QFile(_fileName);
124 _file->open(QIODevice::WriteOnly | QIODevice::Text);
125 _stream = new QTextStream();
126 _stream->setDevice(_file);
127}
128
129// Destructor
130////////////////////////////////////////////////////////////////////////////
131t_rnxNavFile::~t_rnxNavFile() {
132 close();
133 for (unsigned ii = 0; ii < _ephs.size(); ii++) {
134 delete _ephs[ii];
135 }
136}
137
138// Close
139////////////////////////////////////////////////////////////////////////////
140void t_rnxNavFile::close() {
141 delete _stream; _stream = 0;
142 delete _file; _file = 0;
143}
144
145// Read File Content
146////////////////////////////////////////////////////////////////////////////
147void t_rnxNavFile::read(QTextStream* stream) {
148 QString navTypeStr;
149
150 while (stream->status() == QTextStream::Ok && !stream->atEnd()) {
151
152 QString line = stream->readLine();
153 if (line.isEmpty()) {
154 continue;
155 }
156
157 QStringList hlp = line.split(QRegExp("\\s+"), QString::SkipEmptyParts);
158 QString firstStr = hlp.at(0);
159 QString prn;
160
161 if (version() >= 3.0 && firstStr != ">") {
162 prn = firstStr;
163 }
164 else if (version() >= 4.0 && firstStr == ">") {
165 int lines2skip = 0;
166 QString key = hlp.at(1);
167 // EPH is used
168 if (key == "EPH") {
169 navTypeStr = hlp.at(3);
170 }
171 // all others are currently ignored
172 else if (key == "STO") {
173 lines2skip = 2;
174 }
175 else if (key == "EOP" || key == "ION") {
176 lines2skip = 3;
177 }
178 if (lines2skip) {
179 for (int ii = 1; ii < lines2skip; ii++) {
180 stream->readLine();
181 }
182 }
183 continue;
184 }
185 else {
186 if (glonass()) {
187 prn = QString("R%1_0").arg(hlp.at(0).toInt(), 2, 10, QChar('0'));
188 }
189 else {
190 prn = QString("G%1_0").arg(hlp.at(0).toInt(), 2, 10, QChar('0'));
191 }
192 }
193
194 t_eph* eph = 0;
195 QStringList lines; lines << line;
196 if (prn[0] == 'G') {
197 for (int ii = 1; ii < 8; ii++) {
198 lines << stream->readLine();
199 }
200 eph = new t_ephGPS(version(), lines);
201 }
202 else if (prn[0] == 'R') {
203 int num = 4;
204 if (version() >= 3.05) {
205 num += 1;
206 }
207 for (int ii = 1; ii < num; ii++) {
208 lines << stream->readLine();
209 }
210 eph = new t_ephGlo(version(), lines);
211 }
212 else if (prn[0] == 'E') {
213 for (int ii = 1; ii < 8; ii++) {
214 lines << stream->readLine();
215 }
216 eph = new t_ephGal(version(), lines);
217 }
218 else if (prn[0] == 'J') {
219 for (int ii = 1; ii < 8; ii++) {
220 lines << stream->readLine();
221 }
222 eph = new t_ephGPS(version(), lines);
223 }
224 else if (prn[0] == 'S') {
225 for (int ii = 1; ii < 4; ii++) {
226 lines << stream->readLine();
227 }
228 eph = new t_ephSBAS(version(), lines);
229 }
230 else if (prn[0] == 'C') {
231 for (int ii = 1; ii < 8; ii++) {
232 lines << stream->readLine();
233 }
234 eph = new t_ephBDS(version(), lines);
235 }
236 else if (prn[0] == 'I') {
237 for (int ii = 1; ii < 8; ii++) {
238 lines << stream->readLine();
239 }
240 eph = new t_ephGPS(version(), lines);
241 }
242 else {
243 continue;
244 }
245 if (version() >= 4.0) {
246 if (eph->setNavType(navTypeStr) != success) {
247 delete eph;
248 continue;
249 }
250 }
251 _ephs.push_back(eph);
252 }
253}
254
255// Read Next Ephemeris
256////////////////////////////////////////////////////////////////////////////
257t_eph* t_rnxNavFile::getNextEph(const bncTime& tt,
258 const QMap<QString, unsigned int>* corrIODs) {
259
260 // Get Ephemeris according to IOD
261 // ------------------------------
262 if (corrIODs) {
263 QMapIterator<QString, unsigned int> itIOD(*corrIODs);
264 while (itIOD.hasNext()) {
265 itIOD.next();
266 QString prn = itIOD.key();
267 unsigned int iod = itIOD.value();
268 vector<t_eph*>::iterator it = _ephs.begin();
269 while (it != _ephs.end()) {
270 t_eph* eph = *it;
271 double dt = eph->TOC() - tt;
272 if (dt < 8*3600.0 && QString(eph->prn().toInternalString().c_str()) == prn && eph->IOD() == iod) {
273 it = _ephs.erase(it);
274 return eph;
275 }
276 ++it;
277 }
278 }
279 }
280
281 // Get Ephemeris according to time
282 // -------------------------------
283 else {
284 vector<t_eph*>::iterator it = _ephs.begin();
285 while (it != _ephs.end()) {
286 t_eph* eph = *it;
287 double dt = eph->TOC() - tt;
288 if (dt < 2*3600.0) {
289 it = _ephs.erase(it);
290 return eph;
291 }
292 ++it;
293 }
294 }
295
296 return 0;
297}
298
299//
300////////////////////////////////////////////////////////////////////////////
301void t_rnxNavFile::writeHeader(const QMap<QString, QString>* txtMap, int numMergedFiles, int leapSecs) {
302
303 QString runBy = BNC_CORE->userName();
304 QStringList comments;
305
306 if (txtMap) {
307 QMapIterator<QString, QString> it(*txtMap);
308 while (it.hasNext()) {
309 it.next();
310 if (it.key() == "RUN BY") {
311 runBy = it.value();
312 }
313 else if (it.key() == "COMMENT") {
314 comments = it.value().split("\\n", QString::SkipEmptyParts);
315 }
316 }
317 }
318
319 if (version() < 3.0) {
320 const QString fmt = glonass() ? "%1 GLONASS navigation data"
321 : "%1 Navigation data";
322 *_stream << QString(fmt)
323 .arg(_header._version, 9, 'f', 2)
324 .leftJustified(60)
325 << "RINEX VERSION / TYPE\n";
326 }
327 else {
328 QString fmt;
329 t_eph::e_type sys = satSystem();
330 switch(sys) {
331 case t_eph::GPS:
332 fmt.append("%1 N: GNSS NAV DATA G: GPS");
333 break;
334 case t_eph::GLONASS:
335 fmt.append("%1 N: GNSS NAV DATA R: GLONASS");
336 break;
337 case t_eph::Galileo:
338 fmt.append("%1 N: GNSS NAV DATA E: Galileo");
339 break;
340 case t_eph::QZSS:
341 fmt.append("%1 N: GNSS NAV DATA J: QZSS");
342 break;
343 case t_eph::BDS:
344 fmt.append("%1 N: GNSS NAV DATA C: BDS");
345 break;
346 case t_eph::IRNSS:
347 fmt.append("%1 N: GNSS NAV DATA I: IRNSS");
348 break;
349 case t_eph::SBAS:
350 fmt.append("%1 N: GNSS NAV DATA S: SBAS");
351 break;
352 case t_eph::unknown:
353 fmt.append("%1 N: GNSS NAV DATA M: MIXED");
354 break;
355 }
356 *_stream << fmt
357 .arg(_header._version, 9, 'f', 2)
358 .leftJustified(60)
359 << "RINEX VERSION / TYPE\n";
360 }
361
362 const QString fmtDate = (version() < 3.0) ? "dd-MMM-yy hh:mm"
363 : "yyyyMMdd hhmmss UTC";
364 *_stream << QString("%1%2%3")
365 .arg(BNC_CORE->pgmName(), -20)
366 .arg(runBy.trimmed().left(20), -20)
367 .arg(QDateTime::currentDateTime().toUTC().toString(fmtDate), -20)
368 .leftJustified(60)
369 << "PGM / RUN BY / DATE\n";
370
371 if (version() >= 4.0) {
372 *_stream << QString("%1").arg(leapSecs, 6, 10, QLatin1Char(' ')).left(60).leftJustified(60)
373 << "LEAP SECONDS\n";
374
375 *_stream << QString("%1").arg(numMergedFiles, 19, 10, QLatin1Char(' ')).leftJustified(60)
376 << "MERGED FILE\n";
377 }
378
379 QStringListIterator itCmnt(comments);
380 while (itCmnt.hasNext()) {
381 *_stream << itCmnt.next().trimmed().left(60).leftJustified(60) << "COMMENT\n";
382 }
383
384
385 *_stream << QString()
386 .leftJustified(60)
387 << "END OF HEADER\n";
388}
389
390//
391////////////////////////////////////////////////////////////////////////////
392void t_rnxNavFile::writeEph(const t_eph* eph) {
393 *_stream << eph->toString(version());
394}
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