source: ntrip/branches/BNC_2.12/src/bncephuser.cpp@ 9197

Last change on this file since 9197 was 9197, checked in by stuerze, 20 months ago

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1// converting GNSS data streams from NTRIP broadcasters.
2//
3// Copyright (C) 2007
4// German Federal Agency for Cartography and Geodesy (BKG)
5// http://www.bkg.bund.de
6// Czech Technical University Prague, Department of Geodesy
7// http://www.fsv.cvut.cz
8//
9// Email: euref-ip@bkg.bund.de
10//
11// This program is free software; you can redistribute it and/or
12// modify it under the terms of the GNU General Public License
13// as published by the Free Software Foundation, version 2.
14//
15// This program is distributed in the hope that it will be useful,
16// but WITHOUT ANY WARRANTY; without even the implied warranty of
17// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18// GNU General Public License for more details.
19//
20// You should have received a copy of the GNU General Public License
21// along with this program; if not, write to the Free Software
22// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23
24/* -------------------------------------------------------------------------
25 * BKG NTRIP Client
26 * -------------------------------------------------------------------------
27 *
28 * Class: bncEphUser
29 *
30 * Purpose: Base for Classes that use Ephemerides
31 *
32 * Author: L. Mervart
33 *
34 * Created: 27-Jan-2011
35 *
36 * Changes:
37 *
38 * -----------------------------------------------------------------------*/
39
40#include <cmath>
41#include <iostream>
42
43#include "bncephuser.h"
44#include "bnccore.h"
45
46using namespace std;
47
48// Constructor
49////////////////////////////////////////////////////////////////////////////
50bncEphUser::bncEphUser(bool connectSlots) {
51 if (connectSlots) {
52 connect(BNC_CORE, SIGNAL(newGPSEph(t_ephGPS)),
53 this, SLOT(slotNewGPSEph(t_ephGPS)), Qt::DirectConnection);
54
55 connect(BNC_CORE, SIGNAL(newGlonassEph(t_ephGlo)),
56 this, SLOT(slotNewGlonassEph(t_ephGlo)), Qt::DirectConnection);
57
58 connect(BNC_CORE, SIGNAL(newGalileoEph(t_ephGal)),
59 this, SLOT(slotNewGalileoEph(t_ephGal)), Qt::DirectConnection);
60
61 connect(BNC_CORE, SIGNAL(newSBASEph(t_ephSBAS)),
62 this, SLOT(slotNewSBASEph(t_ephSBAS)), Qt::DirectConnection);
63
64 connect(BNC_CORE, SIGNAL(newBDSEph(t_ephBDS)),
65 this, SLOT(slotNewBDSEph(t_ephBDS)), Qt::DirectConnection);
66 }
67}
68
69// Destructor
70////////////////////////////////////////////////////////////////////////////
71bncEphUser::~bncEphUser() {
72 QMapIterator<QString, deque<t_eph*> > it(_eph);
73 while (it.hasNext()) {
74 it.next();
75 const deque<t_eph*>& qq = it.value();
76 for (unsigned ii = 0; ii < qq.size(); ii++) {
77 delete qq[ii];
78 }
79 }
80}
81
82// New GPS Ephemeris
83////////////////////////////////////////////////////////////////////////////
84void bncEphUser::slotNewGPSEph(t_ephGPS eph) {
85 putNewEph(&eph, true);
86}
87
88// New Glonass Ephemeris
89////////////////////////////////////////////////////////////////////////////
90void bncEphUser::slotNewGlonassEph(t_ephGlo eph) {
91 putNewEph(&eph, true);
92}
93
94// New Galileo Ephemeris
95////////////////////////////////////////////////////////////////////////////
96void bncEphUser::slotNewGalileoEph(t_ephGal eph) {
97 putNewEph(&eph, true);
98}
99
100// New SBAS Ephemeris
101////////////////////////////////////////////////////////////////////////////
102void bncEphUser::slotNewSBASEph(t_ephSBAS eph) {
103 putNewEph(&eph, true);
104}
105
106// New BDS Ephemeris
107////////////////////////////////////////////////////////////////////////////
108void bncEphUser::slotNewBDSEph(t_ephBDS eph) {
109 putNewEph(&eph, true);
110}
111
112//
113////////////////////////////////////////////////////////////////////////////
114t_irc bncEphUser::putNewEph(t_eph* eph, bool realTime) {
115
116 QMutexLocker locker(&_mutex);
117
118 if (eph == 0) {
119 return failure;
120 }
121
122 const t_ephGPS* ephGPS = dynamic_cast<const t_ephGPS*>(eph);
123 const t_ephGlo* ephGlo = dynamic_cast<const t_ephGlo*>(eph);
124 const t_ephGal* ephGal = dynamic_cast<const t_ephGal*>(eph);
125 const t_ephSBAS* ephSBAS = dynamic_cast<const t_ephSBAS*>(eph);
126 const t_ephBDS* ephBDS = dynamic_cast<const t_ephBDS*>(eph);
127
128 t_eph* newEph = 0;
129
130 if (ephGPS) {
131 newEph = new t_ephGPS(*ephGPS);
132 }
133 else if (ephGlo) {
134 newEph = new t_ephGlo(*ephGlo);
135 }
136 else if (ephGal) {
137 newEph = new t_ephGal(*ephGal);
138 }
139 else if (ephSBAS) {
140 newEph = new t_ephSBAS(*ephSBAS);
141 }
142 else if (ephBDS) {
143 newEph = new t_ephBDS(*ephBDS);
144 }
145 else {
146 return failure;
147 }
148
149 QString prn(newEph->prn().toInternalString().c_str());
150
151 const t_eph* ephOld = ephLast(prn);
152
153 if (ephOld &&
154 (ephOld->checkState() == t_eph::bad ||
155 ephOld->checkState() == t_eph::outdated)) {
156 ephOld = 0;
157 }
158
159 if (ephOld == 0 || newEph->isNewerThan(ephOld)) {
160 checkEphemeris(eph, realTime);
161 }
162 else {
163 delete newEph;
164 return failure;
165 }
166
167 if (eph->checkState() != t_eph::bad &&
168 eph->checkState() != t_eph::outdated) {
169 deque<t_eph*>& qq = _eph[prn];
170 qq.push_back(newEph);
171 if (qq.size() > _maxQueueSize) {
172 delete qq.front();
173 qq.pop_front();
174 }
175 ephBufferChanged();
176 return success;
177 }
178 else {
179 delete newEph;
180 return failure;
181 }
182}
183
184//
185////////////////////////////////////////////////////////////////////////////
186void bncEphUser::checkEphemeris(t_eph* eph, bool realTime) {
187
188 if (!eph || eph->checkState() == t_eph::ok || eph->checkState() == t_eph::bad) {
189 return;
190 }
191
192 // Check health status
193 // -------------------
194 if (eph->isUnhealthy()) {
195 eph->setCheckState(t_eph::unhealthy);
196 return;
197 }
198
199 // Simple Check - check satellite radial distance
200 // ----------------------------------------------
201 ColumnVector xc(6);
202 ColumnVector vv(3);
203 if (eph->getCrd(eph->TOC(), xc, vv, false) != success) {
204 eph->setCheckState(t_eph::bad);
205 return;
206 }
207 double rr = xc.Rows(1,3).norm_Frobenius();
208 double rv = vv.norm_Frobenius();
209 const double MINDIST = 2.e7;
210 const double MAXDIST = 6.e7;
211 if (rr < MINDIST || rr > MAXDIST || std::isnan(rr)) {
212 eph->setCheckState(t_eph::bad);
213 return;
214 }
215 if (eph->type() == t_eph::GLONASS && rv < 1.0) {
216 eph->setCheckState(t_eph::bad);
217 return;
218 }
219
220 // Check whether the epoch is too far away the current time
221 // --------------------------------------------------------
222 if (realTime) {
223 bncTime toc = eph->TOC();
224 QDateTime now = currentDateAndTimeGPS();
225 bncTime currentTime(now.toString(Qt::ISODate).toStdString());
226 double dt = fabs(currentTime - toc);
227
228 // update interval: 2h, data sets are valid for 4 hours
229 if (eph->type() == t_eph::GPS && dt > 4*3600) {
230 eph->setCheckState(t_eph::outdated);
231 return;
232 }
233 // update interval: 3h, data sets are valid for 4 hours
234 else if (eph->type() == t_eph::Galileo && dt > 4*3600) {
235 eph->setCheckState(t_eph::outdated);
236 return;
237 }
238 // updated every 30 minutes
239 else if (eph->type() == t_eph::GLONASS && dt > 3600) {
240 eph->setCheckState(t_eph::outdated);
241 return;
242 }
243 // orbit parameters are valid for 7200 seconds (minimum)
244 else if (eph->type() == t_eph::QZSS && dt > 3*3600) {
245 eph->setCheckState(t_eph::outdated);
246 return;
247 }
248 // maximum update interval: 300 sec
249 else if (eph->type() == t_eph::SBAS && dt > 1*3600) {
250 eph->setCheckState(t_eph::outdated);
251 return;
252 }
253 // updates 1h (GEO) up to 6 hours non-GEO
254 else if (eph->type() == t_eph::BDS && dt > 6*3600) {
255 eph->setCheckState(t_eph::outdated);
256 return;
257 }
258 // update interval: up to 24 hours
259 else if (eph->type() == t_eph::IRNSS && dt > 24*3600) {
260 eph->setCheckState(t_eph::outdated);
261 return;
262 }
263 }
264
265 // Check consistency with older ephemerides
266 // ----------------------------------------
267 const double MAXDIFF = 1000.0;
268 QString prn = QString(eph->prn().toInternalString().c_str());
269 t_eph* ephL = ephLast(prn);
270
271 if (ephL) {
272 ColumnVector xcL(6);
273 ColumnVector vvL(3);
274 ephL->getCrd(eph->TOC(), xcL, vvL, false);
275 double dt = eph->TOC() - ephL->TOC();
276 if (dt < 0.0) {
277 dt += 604800.0;
278 }
279 double diff = (xc.Rows(1,3) - xcL.Rows(1,3)).norm_Frobenius();
280 double diffC = fabs(xc(4) - xcL(4)) * t_CST::c;
281
282 // some lines to allow update of ephemeris data sets after outage
283 if (eph->type() == t_eph::GPS && dt > 4*3600) {
284 ephL->setCheckState(t_eph::outdated);
285 return;
286 }
287 else if (eph->type() == t_eph::Galileo && dt > 4*3600) {
288 ephL->setCheckState(t_eph::outdated);
289 return;
290 }
291 else if (eph->type() == t_eph::GLONASS && dt > 3600) {
292 ephL->setCheckState(t_eph::outdated);
293 return;
294 }
295 else if (eph->type() == t_eph::QZSS && dt > 3*3600) {
296 ephL->setCheckState(t_eph::outdated);
297 return;
298 }
299 else if (eph->type() == t_eph::SBAS && dt > 3600) {
300 ephL->setCheckState(t_eph::outdated);
301 return;
302 }
303 else if (eph->type() == t_eph::BDS && dt > 6*3600) {
304 ephL->setCheckState(t_eph::outdated);
305 return;
306 }
307 else if (eph->type() == t_eph::IRNSS && dt > 24*3600) {
308 ephL->setCheckState(t_eph::outdated);
309 return;
310 }
311
312 if (diff < MAXDIFF && diffC < MAXDIFF) {
313 if (dt != 0.0) {
314 eph->setCheckState(t_eph::ok);
315 ephL->setCheckState(t_eph::ok);
316 }
317 }
318 else {
319 if (ephL->checkState() == t_eph::ok) {
320 eph->setCheckState(t_eph::bad);
321 }
322 }
323 }
324}
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