source: ntrip/trunk/BNC/src/RTCM3/RTCM3coDecoder.cpp@ 6812

Last change on this file since 6812 was 6812, checked in by stoecker, 9 years ago

integrate RTCM3 parsing into BNC and directly fill target structures, add doxygen documentation
File size: 20.0 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: RTCM3coDecoder
30 *
31 * Purpose: RTCM3 Clock Orbit Decoder
32 *
33 * Author: L. Mervart
34 *
35 * Created: 05-May-2008
36 *
37 * Changes:
38 *
39 * -----------------------------------------------------------------------*/
40
41#include <stdio.h>
42#include <math.h>
43
44#include "RTCM3coDecoder.h"
45#include "bncutils.h"
46#include "bncrinex.h"
47#include "bnccore.h"
48#include "bncsettings.h"
49#include "bnctime.h"
50
51using namespace std;
52
53// Constructor
54////////////////////////////////////////////////////////////////////////////
55RTCM3coDecoder::RTCM3coDecoder(const QString& staID) {
56
57 _staID = staID;
58
59 // File Output
60 // -----------
61 bncSettings settings;
62 QString path = settings.value("corrPath").toString();
63 if (!path.isEmpty()) {
64 expandEnvVar(path);
65 if ( path.length() > 0 && path[path.length()-1] != QDir::separator() ) {
66 path += QDir::separator();
67 }
68 _fileNameSkl = path + staID;
69 }
70 _out = 0;
71
72 connect(this, SIGNAL(newOrbCorrections(QList<t_orbCorr>)),
73 BNC_CORE, SLOT(slotNewOrbCorrections(QList<t_orbCorr>)));
74
75 connect(this, SIGNAL(newClkCorrections(QList<t_clkCorr>)),
76 BNC_CORE, SLOT(slotNewClkCorrections(QList<t_clkCorr>)));
77
78 connect(this, SIGNAL(newCodeBiases(QList<t_satCodeBias>)),
79 BNC_CORE, SLOT(slotNewCodeBiases(QList<t_satCodeBias>)));
80
81 connect(this, SIGNAL(newPhaseBiases(QList<t_satPhaseBias>)),
82 BNC_CORE, SLOT(slotNewPhaseBiases(QList<t_satPhaseBias>)));
83
84 connect(this, SIGNAL(newTec(t_vTec)),
85 BNC_CORE, SLOT(slotNewTec(t_vTec)));
86
87 connect(this, SIGNAL(providerIDChanged(QString)),
88 BNC_CORE, SIGNAL(providerIDChanged(QString)));
89
90 connect(this, SIGNAL(newMessage(QByteArray,bool)),
91 BNC_CORE, SLOT(slotMessage(const QByteArray,bool)));
92
93 reset();
94
95 _providerID[0] = -1;
96 _providerID[1] = -1;
97 _providerID[2] = -1;
98}
99
100// Destructor
101////////////////////////////////////////////////////////////////////////////
102RTCM3coDecoder::~RTCM3coDecoder() {
103 delete _out;
104}
105
106//
107////////////////////////////////////////////////////////////////////////////
108void RTCM3coDecoder::reset() {
109 memset(&_clkOrb, 0, sizeof(_clkOrb));
110 memset(&_codeBias, 0, sizeof(_codeBias));
111 memset(&_phaseBias, 0, sizeof(_phaseBias));
112 memset(&_vTEC, 0, sizeof(_vTEC));
113}
114
115// Reopen Output File
116////////////////////////////////////////////////////////////////////////
117void RTCM3coDecoder::reopen() {
118
119 if (!_fileNameSkl.isEmpty()) {
120
121 bncSettings settings;
122
123 QDateTime datTim = currentDateAndTimeGPS();
124
125 QString hlpStr = bncRinex::nextEpochStr(datTim,
126 settings.value("corrIntr").toString());
127
128 QString fileNameHlp = _fileNameSkl
129 + QString("%1").arg(datTim.date().dayOfYear(), 3, 10, QChar('0'))
130 + hlpStr + datTim.toString(".yyC");
131
132 if (_fileName == fileNameHlp) {
133 return;
134 }
135 else {
136 _fileName = fileNameHlp;
137 }
138
139 delete _out;
140 if ( Qt::CheckState(settings.value("rnxAppend").toInt()) == Qt::Checked) {
141 _out = new ofstream( _fileName.toAscii().data(), ios_base::out | ios_base::app );
142 }
143 else {
144 _out = new ofstream( _fileName.toAscii().data() );
145 }
146 }
147}
148
149//
150////////////////////////////////////////////////////////////////////////////
151t_irc RTCM3coDecoder::Decode(char* buffer, int bufLen, vector<string>& errmsg) {
152
153 errmsg.clear();
154
155 _buffer.append(QByteArray(buffer,bufLen));
156
157 t_irc retCode = failure;
158
159 while(_buffer.size()) {
160
161 struct ClockOrbit clkOrbSav;
162 struct CodeBias codeBiasSav;
163 struct PhaseBias phaseBiasSav;
164 struct VTEC vTECSav;
165 memcpy(&clkOrbSav, &_clkOrb, sizeof(clkOrbSav)); // save state
166 memcpy(&codeBiasSav, &_codeBias, sizeof(codeBiasSav));
167 memcpy(&phaseBiasSav, &_phaseBias, sizeof(phaseBiasSav));
168 memcpy(&vTECSav, &_vTEC, sizeof(vTECSav));
169
170 int bytesused = 0;
171 GCOB_RETURN irc = GetSSR(&_clkOrb, &_codeBias, &_vTEC, &_phaseBias,
172 _buffer.data(), _buffer.size(), &bytesused);
173
174 if (irc <= -30) { // not enough data - restore state and exit loop
175 memcpy(&_clkOrb, &clkOrbSav, sizeof(clkOrbSav));
176 memcpy(&_codeBias, &codeBiasSav, sizeof(codeBiasSav));
177 memcpy(&_phaseBias, &phaseBiasSav, sizeof(phaseBiasSav));
178 memcpy(&_vTEC, &vTECSav, sizeof(vTECSav));
179 break;
180 }
181
182 else if (irc < 0) { // error - skip 1 byte and retry
183 reset();
184 _buffer = _buffer.mid(bytesused ? bytesused : 1);
185 }
186
187 else { // OK or MESSAGEFOLLOWS
188 _buffer = _buffer.mid(bytesused);
189
190 if (irc == GCOBR_OK || irc == GCOBR_MESSAGEFOLLOWS ) {
191
192 setEpochTime(); // sets _lastTime
193
194 if (_lastTime.valid()) {
195 reopen();
196 checkProviderID();
197 sendResults();
198 retCode = success;
199 }
200 else {
201 retCode = failure;
202 }
203
204 reset();
205 }
206 }
207 }
208
209 return retCode;
210}
211
212//
213////////////////////////////////////////////////////////////////////////////
214void RTCM3coDecoder::sendResults() {
215
216 // Orbit and clock corrections of all satellites
217 // ---------------------------------------------
218 for (unsigned ii = 0; ii < CLOCKORBIT_NUMGPS + _clkOrb.NumberOfSat[CLOCKORBIT_SATGLONASS]; ii++) {
219 char sysCh = ' ';
220 if (ii < _clkOrb.NumberOfSat[CLOCKORBIT_SATGPS]) {
221 sysCh = 'G';
222 }
223 else if (ii >= CLOCKORBIT_NUMGPS) {
224 sysCh = 'R';
225 }
226 else {
227 continue;
228 }
229
230 // Orbit correction
231 // ----------------
232 if ( _clkOrb.messageType == COTYPE_GPSCOMBINED ||
233 _clkOrb.messageType == COTYPE_GLONASSCOMBINED ||
234 _clkOrb.messageType == COTYPE_GPSORBIT ||
235 _clkOrb.messageType == COTYPE_GLONASSORBIT ) {
236
237 t_orbCorr orbCorr;
238 orbCorr._prn.set(sysCh, _clkOrb.Sat[ii].ID);
239 orbCorr._staID = _staID.toStdString();
240 orbCorr._iod = _clkOrb.Sat[ii].IOD;
241 orbCorr._time = _lastTime;
242 orbCorr._updateInt = _clkOrb.UpdateInterval;
243 orbCorr._system = 'R';
244 orbCorr._xr[0] = _clkOrb.Sat[ii].Orbit.DeltaRadial;
245 orbCorr._xr[1] = _clkOrb.Sat[ii].Orbit.DeltaAlongTrack;
246 orbCorr._xr[2] = _clkOrb.Sat[ii].Orbit.DeltaCrossTrack;
247 orbCorr._dotXr[0] = _clkOrb.Sat[ii].Orbit.DotDeltaRadial;
248 orbCorr._dotXr[1] = _clkOrb.Sat[ii].Orbit.DotDeltaAlongTrack;
249 orbCorr._dotXr[2] = _clkOrb.Sat[ii].Orbit.DotDeltaCrossTrack;
250
251 _orbCorrections[_lastTime].push_back(orbCorr);
252
253 _IODs[orbCorr._prn] = _clkOrb.Sat[ii].IOD;
254 }
255
256 // Clock Corrections
257 // -----------------
258 if ( _clkOrb.messageType == COTYPE_GPSCOMBINED ||
259 _clkOrb.messageType == COTYPE_GLONASSCOMBINED ||
260 _clkOrb.messageType == COTYPE_GPSCLOCK ||
261 _clkOrb.messageType == COTYPE_GLONASSCLOCK ) {
262
263 t_clkCorr clkCorr;
264 clkCorr._prn.set(sysCh, _clkOrb.Sat[ii].ID);
265 clkCorr._staID = _staID.toStdString();
266 clkCorr._time = _lastTime;
267 clkCorr._updateInt = _clkOrb.UpdateInterval;
268 clkCorr._dClk = _clkOrb.Sat[ii].Clock.DeltaA0 / t_CST::c;
269 clkCorr._dotDClk = _clkOrb.Sat[ii].Clock.DeltaA1 / t_CST::c;
270 clkCorr._dotDotDClk = _clkOrb.Sat[ii].Clock.DeltaA2 / t_CST::c;
271
272 _lastClkCorrections[clkCorr._prn] = clkCorr;
273
274 if (_IODs.contains(clkCorr._prn)) {
275 clkCorr._iod = _IODs[clkCorr._prn];
276 _clkCorrections[_lastTime].push_back(clkCorr);
277 }
278 }
279
280 // High-Resolution Clocks
281 // ----------------------
282 if ( _clkOrb.messageType == COTYPE_GPSHR ||
283 _clkOrb.messageType == COTYPE_GLONASSHR ) {
284
285 t_prn prn(sysCh, _clkOrb.Sat[ii].ID);
286 if (_lastClkCorrections.contains(prn)) {
287 t_clkCorr clkCorr;
288 clkCorr = _lastClkCorrections[prn];
289 clkCorr._time = _lastTime;
290 clkCorr._updateInt = _clkOrb.UpdateInterval;
291 clkCorr._dClk += _clkOrb.Sat[ii].hrclock / t_CST::c;
292 if (_IODs.contains(clkCorr._prn)) {
293 clkCorr._iod = _IODs[clkCorr._prn];
294 _clkCorrections[_lastTime].push_back(clkCorr);
295 }
296 }
297 }
298 }
299
300 // Code Biases
301 // -----------
302 for (unsigned ii = 0; ii < CLOCKORBIT_NUMGPS + _codeBias.NumberOfSat[CLOCKORBIT_SATGLONASS]; ii++) {
303 char sysCh = ' ';
304 if (ii < _codeBias.NumberOfSat[CLOCKORBIT_SATGPS]) {
305 sysCh = 'G';
306 }
307 else if (ii >= CLOCKORBIT_NUMGPS) {
308 sysCh = 'R';
309 }
310 else {
311 continue;
312 }
313 t_satCodeBias satCodeBias;
314 satCodeBias._prn.set(sysCh, _codeBias.Sat[ii].ID);
315 satCodeBias._staID = _staID.toStdString();
316 satCodeBias._time = _lastTime;
317 satCodeBias._updateInt = _codeBias.UpdateInterval;
318 for (unsigned jj = 0; jj < _codeBias.Sat[ii].NumberOfCodeBiases; jj++) {
319 const CodeBias::BiasSat::CodeBiasEntry& biasEntry = _codeBias.Sat[ii].Biases[jj];
320 t_frqCodeBias frqCodeBias;
321 frqCodeBias._rnxType2ch = codeTypeToRnxType(sysCh, biasEntry.Type);
322 frqCodeBias._value = biasEntry.Bias;
323 if (!frqCodeBias._rnxType2ch.empty()) {
324 satCodeBias._bias.push_back(frqCodeBias);
325 }
326 }
327 _codeBiases[_lastTime].push_back(satCodeBias);
328 }
329
330 // Phase Biases
331 // -----------
332 for (unsigned ii = 0; ii < CLOCKORBIT_NUMGPS + _phaseBias.NumberOfSat[CLOCKORBIT_SATGLONASS]; ii++) {
333 char sysCh = ' ';
334 if (ii < _phaseBias.NumberOfSat[CLOCKORBIT_SATGPS]) {
335 sysCh = 'G';
336 }
337 else if (ii >= CLOCKORBIT_NUMGPS) {
338 sysCh = 'R';
339 }
340 else {
341 continue;
342 }
343 t_satPhaseBias satPhaseBias;
344 satPhaseBias._prn.set(sysCh, _phaseBias.Sat[ii].ID);
345 satPhaseBias._staID = _staID.toStdString();
346 satPhaseBias._time = _lastTime;
347 satPhaseBias._updateInt = _phaseBias.UpdateInterval;
348 satPhaseBias._yawDeg = _phaseBias.Sat[ii].YawAngle * 180.0 / M_PI;
349 satPhaseBias._yawDegRate = _phaseBias.Sat[ii].YawRate * 180.0 / M_PI;
350 for (unsigned jj = 0; jj < _phaseBias.Sat[ii].NumberOfPhaseBiases; jj++) {
351 const PhaseBias::PhaseBiasSat::PhaseBiasEntry& biasEntry = _phaseBias.Sat[ii].Biases[jj];
352 t_frqPhaseBias frqPhaseBias;
353 frqPhaseBias._rnxType2ch = codeTypeToRnxType(sysCh, biasEntry.Type);
354 frqPhaseBias._value = biasEntry.Bias;
355 frqPhaseBias._fixIndicator = biasEntry.SignalIntegerIndicator;
356 frqPhaseBias._fixWideLaneIndicator = biasEntry.SignalsWideLaneIntegerIndicator;
357 frqPhaseBias._jumpCounter = biasEntry.SignalDiscontinuityCounter;
358 if (!frqPhaseBias._rnxType2ch.empty()) {
359 satPhaseBias._bias.push_back(frqPhaseBias);
360 }
361 }
362 _phaseBiases[_lastTime].push_back(satPhaseBias);
363 }
364
365 // Ionospheric Model
366 // -----------------
367 if (_vTEC.NumLayers > 0) {
368 _vTecMap[_lastTime]._time = _lastTime;
369 _vTecMap[_lastTime]._updateInt = _vTEC.UpdateInterval;
370 _vTecMap[_lastTime]._staID = _staID.toStdString();
371 for (unsigned ii = 0; ii < _vTEC.NumLayers; ii++) {
372 const VTEC::IonoLayers& ionoLayer = _vTEC.Layers[ii];
373 t_vTecLayer layer;
374 layer._height = ionoLayer.Height;
375 layer._C.ReSize(ionoLayer.Degree, ionoLayer.Order);
376 layer._S.ReSize(ionoLayer.Degree, ionoLayer.Order);
377 for (unsigned iDeg = 0; iDeg < ionoLayer.Degree; iDeg++) {
378 for (unsigned iOrd = 0; iOrd < ionoLayer.Order; iOrd++) {
379 layer._C[iDeg][iOrd] = ionoLayer.Cosinus[iDeg][iOrd];
380 layer._S[iDeg][iOrd] = ionoLayer.Sinus[iDeg][iOrd];
381 }
382 }
383 _vTecMap[_lastTime]._layers.push_back(layer);
384 }
385 }
386
387 // Dump all older epochs
388 // ---------------------
389 QMutableMapIterator<bncTime, QList<t_orbCorr> > itOrb(_orbCorrections);
390 while (itOrb.hasNext()) {
391 itOrb.next();
392 if (itOrb.key() < _lastTime) {
393 emit newOrbCorrections(itOrb.value());
394 t_orbCorr::writeEpoch(_out, itOrb.value());
395 itOrb.remove();
396 }
397 }
398 QMutableMapIterator<bncTime, QList<t_clkCorr> > itClk(_clkCorrections);
399 while (itClk.hasNext()) {
400 itClk.next();
401 if (itClk.key() < _lastTime) {
402 emit newClkCorrections(itClk.value());
403 t_clkCorr::writeEpoch(_out, itClk.value());
404 itClk.remove();
405 }
406 }
407 QMutableMapIterator<bncTime, QList<t_satCodeBias> > itCB(_codeBiases);
408 while (itCB.hasNext()) {
409 itCB.next();
410 if (itCB.key() < _lastTime) {
411 emit newCodeBiases(itCB.value());
412 t_satCodeBias::writeEpoch(_out, itCB.value());
413 itCB.remove();
414 }
415 }
416 QMutableMapIterator<bncTime, QList<t_satPhaseBias> > itPB(_phaseBiases);
417 while (itPB.hasNext()) {
418 itPB.next();
419 if (itPB.key() < _lastTime) {
420 emit newPhaseBiases(itPB.value());
421 t_satPhaseBias::writeEpoch(_out, itPB.value());
422 itPB.remove();
423 }
424 }
425 QMutableMapIterator<bncTime, t_vTec> itTec(_vTecMap);
426 while (itTec.hasNext()) {
427 itTec.next();
428 if (itTec.key() < _lastTime) {
429 emit newTec(itTec.value());
430 t_vTec::write(_out, itTec.value());
431 itTec.remove();
432 }
433 }
434}
435
436//
437////////////////////////////////////////////////////////////////////////////
438void RTCM3coDecoder::checkProviderID() {
439
440 if (_clkOrb.SSRProviderID == 0 && _clkOrb.SSRSolutionID == 0 && _clkOrb.SSRIOD == 0) {
441 return;
442 }
443
444 int newProviderID[3];
445 newProviderID[0] = _clkOrb.SSRProviderID;
446 newProviderID[1] = _clkOrb.SSRSolutionID;
447 newProviderID[2] = _clkOrb.SSRIOD;
448
449 bool alreadySet = false;
450 bool different = false;
451
452 for (unsigned ii = 0; ii < 3; ii++) {
453 if (_providerID[ii] != -1) {
454 alreadySet = true;
455 }
456 if (_providerID[ii] != newProviderID[ii]) {
457 different = true;
458 }
459 _providerID[ii] = newProviderID[ii];
460 }
461
462 if (alreadySet && different) {
463 emit newMessage("RTCM3coDecoder: Provider Changed " + _staID.toAscii() + "\n", true);
464 emit providerIDChanged(_staID);
465 }
466}
467
468//
469////////////////////////////////////////////////////////////////////////////
470void RTCM3coDecoder::setEpochTime() {
471
472 _lastTime.reset();
473
474 double epoSecGPS = -1.0;
475 double epoSecGlo = -1.0;
476 if (_clkOrb.NumberOfSat[CLOCKORBIT_SATGPS] > 0) {
477 epoSecGPS = _clkOrb.EpochTime[CLOCKORBIT_SATGPS]; // 0 .. 604799 s
478 }
479 else if (_codeBias.NumberOfSat[CLOCKORBIT_SATGPS] > 0) {
480 epoSecGPS = _codeBias.EpochTime[CLOCKORBIT_SATGPS]; // 0 .. 604799 s
481 }
482 else if (_phaseBias.NumberOfSat[CLOCKORBIT_SATGPS] > 0) {
483 epoSecGPS = _phaseBias.EpochTime[CLOCKORBIT_SATGPS]; // 0 .. 604799 s
484 }
485 else if (_vTEC.NumLayers > 0) {
486 epoSecGPS = _vTEC.EpochTime; // 0 .. 604799 s
487 }
488 else if (_clkOrb.NumberOfSat[CLOCKORBIT_SATGLONASS] > 0) {
489 epoSecGlo = _clkOrb.EpochTime[CLOCKORBIT_SATGLONASS]; // 0 .. 86399 s
490 }
491 else if (_codeBias.NumberOfSat[CLOCKORBIT_SATGLONASS] > 0) {
492 epoSecGlo = _codeBias.EpochTime[CLOCKORBIT_SATGLONASS]; // 0 .. 86399 s
493 }
494 else if (_phaseBias.NumberOfSat[CLOCKORBIT_SATGLONASS] > 0) {
495 epoSecGlo = _phaseBias.EpochTime[CLOCKORBIT_SATGLONASS]; // 0 .. 86399 s
496 }
497
498 // Retrieve current time
499 // ---------------------
500 int currentWeek = 0;
501 double currentSec = 0.0;
502 currentGPSWeeks(currentWeek, currentSec);
503 bncTime currentTime(currentWeek, currentSec);
504
505 // Set _lastTime close to currentTime
506 // ----------------------------------
507 if (epoSecGPS != -1) {
508 _lastTime.set(currentWeek, epoSecGPS);
509 }
510 else if (epoSecGlo != -1) {
511 QDate date = dateAndTimeFromGPSweek(currentTime.gpsw(), currentTime.gpssec()).date();
512 epoSecGlo = epoSecGlo - 3 * 3600 + gnumleap(date.year(), date.month(), date.day());
513 _lastTime.set(currentWeek, epoSecGlo);
514 }
515
516 if (_lastTime.valid()) {
517 double maxDiff = 12 * 3600.0;
518 while (_lastTime < currentTime - maxDiff) {
519 _lastTime = _lastTime + maxDiff;
520 }
521 while (_lastTime > currentTime + maxDiff) {
522 _lastTime = _lastTime - maxDiff;
523 }
524 }
525}
526
527//
528////////////////////////////////////////////////////////////////////////////
529string RTCM3coDecoder::codeTypeToRnxType(char system, CodeType type) const {
530 if (system == 'G') {
531 switch (type) {
532 case CODETYPEGPS_L1_CA: return "1C";
533 case CODETYPEGPS_L1_P: return "1P";
534 case CODETYPEGPS_L1_Z: return "1W";
535 case CODETYPEGPS_L2_CA: return "2C";
536 case CODETYPEGPS_SEMI_CODELESS: return "?N"; // which carrier ?
537 case CODETYPEGPS_L2_CM: return "2S";
538 case CODETYPEGPS_L2_CL: return "2L";
539 case CODETYPEGPS_L2_CML: return "2X";
540 case CODETYPEGPS_L2_P: return "2P";
541 case CODETYPEGPS_L2_Z: return "2W";
542 case CODETYPEGPS_L5_I: return "5I";
543 case CODETYPEGPS_L5_Q: return "5Q";
544 default: return "";
545 }
546 }
547 else if (system == 'R') {
548 switch (type) {
549 case CODETYPEGLONASS_L1_CA: return "1C";
550 case CODETYPEGLONASS_L1_P: return "1P";
551 case CODETYPEGLONASS_L2_CA: return "2C";
552 case CODETYPEGLONASS_L2_P: return "2P";
553 default: return "";
554 }
555 }
556 else if (system == 'E') {
557 switch (type) {
558 case CODETYPEGALILEO_E1_A: return "1A";
559 case CODETYPEGALILEO_E1_B: return "1B";
560 case CODETYPEGALILEO_E1_C: return "1C";
561 case CODETYPEGALILEO_E5A_I: return "5I";
562 case CODETYPEGALILEO_E5A_Q: return "5Q";
563 case CODETYPEGALILEO_E5B_I: return "7I";
564 case CODETYPEGALILEO_E5B_Q: return "7Q";
565 case CODETYPEGALILEO_E5_I: return "8I";
566 case CODETYPEGALILEO_E5_Q: return "8Q";
567 case CODETYPEGALILEO_E6_A: return "6A";
568 case CODETYPEGALILEO_E6_B: return "6B";
569 case CODETYPEGALILEO_E6_C: return "6C";
570 default: return "";
571 }
572 }
573 else if (system == 'J') {
574 switch (type) {
575 case CODETYPEQZSS_L1_CA: return "1C";
576 case CODETYPEQZSS_L1C_D: return "1S";
577 case CODETYPEQZSS_L1C_P: return "1L";
578 case CODETYPEQZSS_L1C_DP: return "1X";
579 case CODETYPEQZSS_L2_CM: return "2S";
580 case CODETYPEQZSS_L2_CL: return "2L";
581 case CODETYPEQZSS_L2_CML: return "2X";
582 case CODETYPEQZSS_L5_I: return "5I";
583 case CODETYPEQZSS_L5_Q: return "5Q";
584 case CODETYPEQZSS_L5_IQ: return "5X";
585 case CODETYPEQZSS_LEX_S: return "6S";
586 case CODETYPEQZSS_LEX_L: return "6L";
587 case CODETYPEQZSS_LEX_SL: return "6X";
588 default: return "";
589 }
590 }
591 else if (system == 'S') {
592 switch (type) {
593 case CODETYPE_SBAS_L1_CA: return "1C";
594 case CODETYPE_SBAS_L5_I: return "5I";
595 case CODETYPE_SBAS_L5_Q: return "5Q";
596 case CODETYPE_SBAS_L5_IQ: return "5X";
597 default: return "";
598 }
599 }
600 else if (system == 'C') {
601 switch (type) {
602 case CODETYPE_BDS_B1_I: return "1I";
603 case CODETYPE_BDS_B1_Q: return "1Q";
604 case CODETYPE_BDS_B1_IQ: return "1X";
605 case CODETYPE_BDS_B2_I: return "7I";
606 case CODETYPE_BDS_B2_Q: return "7Q";
607 case CODETYPE_BDS_B2_IQ: return "7X";
608 case CODETYPE_BDS_B3_I: return "6I";
609 case CODETYPE_BDS_B3_Q: return "6Q";
610 case CODETYPE_BDS_B3_IQ: return "6X";
611 default: return "";
612 }
613 }
614 return "";
615};
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