source: ntrip/trunk/BNC/src/latencychecker.cpp@ 6758

Last change on this file since 6758 was 6758, checked in by weber, 7 years ago

Bug in outage reports fixed

File size: 15.4 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: latencyChecker
30 *
31 * Purpose: Check incoming GNSS data for latencies, gaps etc.
32 *
33 * Author: G. Weber
34 *
35 * Created: 02-Feb-2009
36 *
37 * Changes:
38 *
39 * -----------------------------------------------------------------------*/
40
41#include <iostream>
42
43#ifdef WIN32
44#include <windows.h>
45#else
46#include <unistd.h>
47#endif
48
49#include "latencychecker.h"
50#include "bnccore.h"
51#include "bncutils.h"
52#include "bncsettings.h"
53
54using namespace std;
55
56// Constructor
57//////////////////////////////////////////////////////////////////////////////
58latencyChecker::latencyChecker(QByteArray staID) {
59
60 _staID = staID;
61
62 connect(this, SIGNAL(newMessage(QByteArray,bool)),
63 BNC_CORE, SLOT(slotMessage(const QByteArray,bool)));
64
65 bncSettings settings;
66
67 // Notice threshold
68 // ----------------
69 QString obsRate = settings.value("obsRate").toString();
70 _inspSegm = 0;
71 if ( obsRate.isEmpty() ) {
72 _inspSegm = 0;
73 }
74 else if ( obsRate.indexOf("5 Hz") != -1 ) {
75 _inspSegm = 20;
76 }
77 else if ( obsRate.indexOf("1 Hz") != -1 ) {
78 _inspSegm = 10;
79 }
80 else if ( obsRate.indexOf("0.5 Hz") != -1 ) {
81 _inspSegm = 20;
82 }
83 else if ( obsRate.indexOf("0.2 Hz") != -1 ) {
84 _inspSegm = 40;
85 }
86 else if ( obsRate.indexOf("0.1 Hz") != -1 ) {
87 _inspSegm = 50;
88 }
89 _adviseFail = settings.value("adviseFail").toInt();
90 _adviseReco = settings.value("adviseReco").toInt();
91 _adviseScript = settings.value("adviseScript").toString();
92 expandEnvVar(_adviseScript);
93
94 // Latency interval/average
95 // ------------------------
96 _perfIntr = 1;
97 QString perfIntr = settings.value("perfIntr").toString();
98 if ( perfIntr.isEmpty() ) {
99 _perfIntr = 1;
100 }
101 else if ( perfIntr.indexOf("2 sec") != -1 ) {
102 _perfIntr = 2;
103 }
104 else if ( perfIntr.indexOf("10 sec") != -1 ) {
105 _perfIntr = 10;
106 }
107 else if ( perfIntr.indexOf("1 min") != -1 ) {
108 _perfIntr = 60;
109 }
110 else if ( perfIntr.left(5).indexOf("5 min") != -1 ) {
111 _perfIntr = 300;
112 }
113 else if ( perfIntr.indexOf("15 min") != -1 ) {
114 _perfIntr = 900;
115 }
116 else if ( perfIntr.indexOf("1 hour") != -1 ) {
117 _perfIntr = 3600;
118 }
119 else if ( perfIntr.indexOf("6 hours") != -1 ) {
120 _perfIntr = 21600;
121 }
122 else if ( perfIntr.indexOf("1 day") != -1 ) {
123 _perfIntr = 86400;
124 }
125
126 // RTCM message types
127 // ------------------
128 _checkMountPoint = settings.value("miscMount").toString();
129
130 // Initialize private members
131 // --------------------------
132 _maxDt = 1000.0;
133 _wrongEpoch = false;
134 _checkSeg = false;
135 _numSucc = 0;
136 _secSucc = 0;
137 _secFail = 0;
138 _initPause = 0;
139 _currPause = 0;
140 _begCorrupt = false;
141 _endCorrupt = false;
142 _followSec = false;
143 _oldSecGPS = 0;
144 _newSecGPS = 0;
145 _numGaps = 0;
146 _diffSecGPS = 0;
147 _numLat = 0;
148 _sumLat = 0.0;
149 _sumLatQ = 0.0;
150 _meanDiff = 0.0;
151 _minLat = _maxDt;
152 _maxLat = -_maxDt;
153 _curLat = 0.0;
154
155 _checkTime = QDateTime::currentDateTime();
156 _decodeSucc = QDateTime::currentDateTime();
157
158 _decodeStart = QDateTime::currentDateTime();
159 _decodeStop = QDateTime::currentDateTime();
160
161}
162
163// Destructor
164//////////////////////////////////////////////////////////////////////////////
165latencyChecker::~latencyChecker() {
166}
167
168// Perform 'Begin outage' check
169//////////////////////////////////////////////////////////////////////////////
170void latencyChecker::checkReconnect() {
171
172 if (_inspSegm == 0) { return;} // weber
173
174 // Begin outage threshold
175 // ----------------------
176 if ( _decodeStop.isValid() ) {
177 if ( _decodeStop.secsTo(QDateTime::currentDateTime()) > _adviseFail * 60 ) {
178 _decodeStop.setDate(QDate());
179 _decodeStop.setTime(QTime());
180 _begDateOut = _checkTime.toUTC().date().toString("yy-MM-dd");
181 _begTimeOut = _checkTime.toUTC().time().toString("hh:mm:ss");
182 emit(newMessage((_staID
183 + ": Failure threshold exceeded, outage since "
184 + _begDateOut + " " + _begTimeOut).toAscii(), true));
185 callScript(("Begin_Outage "
186 + _begDateOut + " " + _begTimeOut).toAscii());
187 }
188 }
189 _fromReconnect = true;
190 _decodeStart = QDateTime::currentDateTime();
191}
192
193// Perform Corrupt and 'End outage' check
194//////////////////////////////////////////////////////////////////////////////
195void latencyChecker::checkOutage(bool decoded) {
196
197 if (_inspSegm == 0) { return;}
198
199 if (decoded) { _numSucc += 1; }
200
201 if (!_checkPause.isValid() || _checkPause.secsTo(QDateTime::currentDateTime()) >= _currPause ) {
202 if (!_checkSeg) {
203 if ( _checkTime.secsTo(QDateTime::currentDateTime()) > _inspSegm ) {
204 _checkSeg = true;
205 }
206 }
207
208 // Check - once per inspect segment
209 // --------------------------------
210 if (_checkSeg) {
211
212 _checkTime = QDateTime::currentDateTime();
213
214 if (_numSucc > 0) {
215 _secSucc += _inspSegm;
216 _decodeSucc = QDateTime::currentDateTime();
217 if (_secSucc > _adviseReco * 60) {
218 _secSucc = _adviseReco * 60 + 1;
219 }
220 _numSucc = 0;
221 _currPause = _initPause;
222 _checkPause.setDate(QDate());
223 _checkPause.setTime(QTime());
224 }
225 else {
226 _secFail += _inspSegm;
227 _secSucc = 0;
228 if (_secFail > _adviseFail * 60) {
229 _secFail = _adviseFail * 60 + 1;
230 }
231 if (!_checkPause.isValid()) {
232 _checkPause = QDateTime::currentDateTime();
233 }
234 else {
235 _checkPause.setDate(QDate());
236 _checkPause.setTime(QTime());
237 _secFail = _secFail + _currPause - _inspSegm;
238 _currPause = _currPause * 2;
239 if (_currPause > 960) {
240 _currPause = 960;
241 }
242 }
243 }
244
245 // End corrupt threshold
246 // ---------------------
247 if ( _begCorrupt && !_endCorrupt && _secSucc > _adviseReco * 60 ) {
248 _endDateCor = QDateTime::currentDateTime()
249 .addSecs(- _adviseReco * 60)
250 .toUTC().date().toString("yy-MM-dd");
251 _endTimeCor = QDateTime::currentDateTime()
252 .addSecs(- _adviseReco * 60)
253 .toUTC().time().toString("hh:mm:ss");
254 emit(newMessage((_staID
255 + ": Recovery threshold exceeded, corruption ended "
256 + _endDateCor + " " + _endTimeCor).toAscii(), true));
257 callScript(("End_Corrupted "
258 + _endDateCor + " " + _endTimeCor + " Begin was "
259 + _begDateCor + " " + _begTimeCor).toAscii());
260 _endCorrupt = true;
261 _begCorrupt = false;
262 _secFail = 0;
263 }
264 else {
265
266 // Begin corrupt threshold
267 // -----------------------
268 if ( !_begCorrupt && _secFail > _adviseFail * 60 ) {
269 _begDateCor = _decodeSucc.toUTC().date().toString("yy-MM-dd");
270 _begTimeCor = _decodeSucc.toUTC().time().toString("hh:mm:ss");
271 emit(newMessage((_staID
272 + ": Failure threshold exceeded, corrupted since "
273 + _begDateCor + " " + _begTimeCor).toAscii(), true));
274 callScript(("Begin_Corrupted "
275 + _begDateCor + " " + _begTimeCor).toAscii());
276 _begCorrupt = true;
277 _endCorrupt = false;
278 _secSucc = 0;
279 _numSucc = 0;
280 }
281 }
282 _checkSeg = false;
283 }
284 }
285
286 if (_fromReconnect) {
287 _decodeStart = QDateTime::currentDateTime();
288 }
289
290 // End outage threshold
291 // --------------------
292 if ( _decodeStart.isValid() ) {
293 if ( _decodeStart.secsTo(QDateTime::currentDateTime()) > _adviseReco * 60 ) {
294 _decodeStart.setDate(QDate());
295 _decodeStart.setTime(QTime());
296 _endDateOut = QDateTime::currentDateTime()
297 .addSecs(- _adviseReco * 60)
298 .toUTC().date().toString("yy-MM-dd");
299 _endTimeOut = QDateTime::currentDateTime()
300 .addSecs(- _adviseReco * 60)
301 .toUTC().time().toString("hh:mm:ss");
302 emit(newMessage((_staID
303 + ": Recovery threshold exceeded, outage ended "
304 + _endDateOut + " " + _endTimeOut).toAscii(), true));
305 callScript(("End_Outage "
306 + _endDateOut + " " + _endTimeOut + " Begin was "
307 + _begDateOut + " " + _begTimeOut).toAscii());
308 }
309 }
310 _fromReconnect = false;
311 _decodeStop = QDateTime::currentDateTime();
312}
313
314// Perform latency checks (observations)
315//////////////////////////////////////////////////////////////////////////////
316void latencyChecker::checkObsLatency(const QList<t_satObs>& obsList) {
317
318 if (_perfIntr > 0 ) {
319
320 QListIterator<t_satObs> it(obsList);
321 while (it.hasNext()) {
322 const t_satObs& obs = it.next();
323
324 _newSecGPS = static_cast<int>(obs._time.gpssec());
325 if (_newSecGPS != _oldSecGPS) {
326 if (_newSecGPS % _perfIntr < _oldSecGPS % _perfIntr) {
327 if (_numLat > 0) {
328 if (_meanDiff > 0.0) {
329 if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
330 emit( newMessage(QString("%1: Mean latency %2 sec, min %3, max %4, rms %5, %6 epochs, %7 gaps")
331 .arg(_staID.data())
332 .arg(int(_sumLat/_numLat*100)/100.)
333 .arg(int(_minLat*100)/100.)
334 .arg(int(_maxLat*100)/100.)
335 .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
336 .arg(_numLat)
337 .arg(_numGaps)
338 .toAscii(), true) );
339 }
340 } else {
341 if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
342 emit( newMessage(QString("%1: Mean latency %2 sec, min %3, max %4, rms %5, %6 epochs")
343 .arg(_staID.data())
344 .arg(int(_sumLat/_numLat*100)/100.)
345 .arg(int(_minLat*100)/100.)
346 .arg(int(_maxLat*100)/100.)
347 .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
348 .arg(_numLat)
349 .toAscii(), true) );
350 }
351 }
352 }
353 _meanDiff = _diffSecGPS / _numLat;
354 _diffSecGPS = 0;
355 _numGaps = 0;
356 _sumLat = 0.0;
357 _sumLatQ = 0.0;
358 _numLat = 0;
359 _minLat = _maxDt;
360 _maxLat = -_maxDt;
361 }
362 if (_followSec) {
363 _diffSecGPS += _newSecGPS - _oldSecGPS;
364 if (_meanDiff>0.) {
365 if (_newSecGPS - _oldSecGPS > 1.5 * _meanDiff) {
366 _numGaps += 1;
367 }
368 }
369 }
370
371 // Compute the observations latency
372 // --------------------------------
373 int week;
374 double sec;
375 currentGPSWeeks(week, sec);
376 const double secPerWeek = 7.0 * 24.0 * 3600.0;
377 if (week < int(obs._time.gpsw())) {
378 week += 1;
379 sec -= secPerWeek;
380 }
381 if (week > int(obs._time.gpsw())) {
382 week -= 1;
383 sec += secPerWeek;
384 }
385 _curLat = sec - obs._time.gpssec();
386 _sumLat += _curLat;
387 _sumLatQ += _curLat * _curLat;
388 if (_curLat < _minLat) {
389 _minLat = _curLat;
390 }
391 if (_curLat >= _maxLat) {
392 _maxLat = _curLat;
393 }
394 _numLat += 1;
395 _oldSecGPS = _newSecGPS;
396 _followSec = true;
397 }
398 }
399 }
400}
401
402// Perform latency checks (corrections)
403//////////////////////////////////////////////////////////////////////////////
404void latencyChecker::checkCorrLatency(int corrGPSEpochTime) {
405
406 if (corrGPSEpochTime < 0) {
407 return;
408 }
409
410 if (_perfIntr > 0) {
411
412 _newSecGPS = corrGPSEpochTime;
413
414 int week;
415 double sec;
416 currentGPSWeeks(week, sec);
417 double dt = fabs(sec - _newSecGPS);
418 const double secPerWeek = 7.0 * 24.0 * 3600.0;
419 if (dt > 0.5 * secPerWeek) {
420 if (sec > _newSecGPS) {
421 sec -= secPerWeek;
422 } else {
423 sec += secPerWeek;
424 }
425 }
426 if (_newSecGPS != _oldSecGPS) {
427 if (int(_newSecGPS) % _perfIntr < int(_oldSecGPS) % _perfIntr) {
428 if (_numLat>0) {
429 QString late;
430 if (_meanDiff>0.) {
431 late = QString(": Mean latency %1 sec, min %2, max %3, rms %4, %5 epochs, %6 gaps")
432 .arg(int(_sumLat/_numLat*100)/100.)
433 .arg(int(_minLat*100)/100.)
434 .arg(int(_maxLat*100)/100.)
435 .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
436 .arg(_numLat)
437 .arg(_numGaps);
438 if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
439 emit(newMessage(QString(_staID + late ).toAscii(), true) );
440 }
441 }
442 else {
443 late = QString(": Mean latency %1 sec, min %2, max %3, rms %4, %5 epochs")
444 .arg(int(_sumLat/_numLat*100)/100.)
445 .arg(int(_minLat*100)/100.)
446 .arg(int(_maxLat*100)/100.)
447 .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
448 .arg(_numLat);
449 if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
450 emit(newMessage(QString(_staID + late ).toAscii(), true) );
451 }
452 }
453 }
454 _meanDiff = int(_diffSecGPS)/_numLat;
455 _diffSecGPS = 0;
456 _numGaps = 0;
457 _sumLat = 0.0;
458 _sumLatQ = 0.0;
459 _numLat = 0;
460 _minLat = 1000.;
461 _maxLat = -1000.;
462 }
463 if (_followSec) {
464 _diffSecGPS += _newSecGPS - _oldSecGPS;
465 if (_meanDiff>0.) {
466 if (_newSecGPS - _oldSecGPS > 1.5 * _meanDiff) {
467 _numGaps += 1;
468 }
469 }
470 }
471 _curLat = sec - _newSecGPS;
472 _sumLat += _curLat;
473 _sumLatQ += _curLat * _curLat;
474 if (_curLat < _minLat) {
475 _minLat = _curLat;
476 }
477 if (_curLat >= _maxLat) {
478 _maxLat = _curLat;
479 }
480 _numLat += 1;
481 _oldSecGPS = _newSecGPS;
482 _followSec = true;
483 }
484 }
485}
486
487// Call advisory notice script
488////////////////////////////////////////////////////////////////////////////
489void latencyChecker::callScript(const char* comment) {
490 if (!_adviseScript.isEmpty()) {
491#ifdef WIN32
492 Sleep(1);
493 QProcess::startDetached(_adviseScript, QStringList() << _staID << comment) ;
494#else
495 sleep(1);
496 QProcess::startDetached("nohup", QStringList() << _adviseScript << _staID << comment) ;
497#endif
498 }
499}
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