| 1 | // Part of BNC, a utility for retrieving decoding and
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| 2 | // converting GNSS data streams from NTRIP broadcasters.
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| 3 | //
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| 4 | // Copyright (C) 2007
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| 5 | // German Federal Agency for Cartography and Geodesy (BKG)
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| 6 | // http://www.bkg.bund.de
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| 7 | // Czech Technical University Prague, Department of Geodesy
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| 8 | // http://www.fsv.cvut.cz
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| 9 | //
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| 10 | // Email: euref-ip@bkg.bund.de
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| 11 | //
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| 12 | // This program is free software; you can redistribute it and/or
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| 13 | // modify it under the terms of the GNU General Public License
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| 14 | // as published by the Free Software Foundation, version 2.
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| 15 | //
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| 16 | // This program is distributed in the hope that it will be useful,
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| 17 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 18 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 19 | // GNU General Public License for more details.
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| 20 | //
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| 21 | // You should have received a copy of the GNU General Public License
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| 22 | // along with this program; if not, write to the Free Software
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| 23 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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| 24 |
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| 25 | /* -------------------------------------------------------------------------
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| 26 | * BKG NTRIP Client
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| 27 | * -------------------------------------------------------------------------
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| 28 | *
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| 29 | * Class: latencyChecker
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| 30 | *
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| 31 | * Purpose: Check incoming GNSS data for latencies, gaps etc.
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| 32 | *
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| 33 | * Author: G. Weber
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| 34 | *
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| 35 | * Created: 02-Feb-2009
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| 36 | *
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| 37 | * Changes:
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| 38 | *
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| 39 | * -----------------------------------------------------------------------*/
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| 40 |
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| 41 | #include <iostream>
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| 42 |
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| 43 | #ifdef WIN32
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| 44 | #include <windows.h>
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| 45 | #else
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| 46 | #include <unistd.h>
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| 47 | #endif
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| 48 |
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| 49 | #include "latencychecker.h"
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| 50 | #include "bnccore.h"
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| 51 | #include "bncutils.h"
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| 52 | #include "bncsettings.h"
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| 53 |
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| 54 | using namespace std;
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| 55 |
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| 56 | // Constructor
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| 57 | //////////////////////////////////////////////////////////////////////////////
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| 58 | latencyChecker::latencyChecker(QByteArray staID) {
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| 59 |
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| 60 | _staID = staID;
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| 61 |
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| 62 | connect(this, SIGNAL(newMessage(QByteArray,bool)),
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| 63 | BNC_CORE, SLOT(slotMessage(const QByteArray,bool)));
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| 64 |
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| 65 | bncSettings settings;
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| 66 |
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| 67 | // Notice threshold
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| 68 | // ----------------
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| 69 | QString obsRate = settings.value("obsRate").toString();
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| 70 | _inspSegm = 0;
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| 71 | if ( obsRate.isEmpty() ) {
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| 72 | _inspSegm = 0;
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| 73 | }
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| 74 | else if ( obsRate.indexOf("5 Hz") != -1 ) {
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| 75 | _inspSegm = 20;
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| 76 | }
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| 77 | else if ( obsRate.indexOf("1 Hz") != -1 ) {
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| 78 | _inspSegm = 10;
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| 79 | }
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| 80 | else if ( obsRate.indexOf("0.5 Hz") != -1 ) {
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| 81 | _inspSegm = 20;
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| 82 | }
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| 83 | else if ( obsRate.indexOf("0.2 Hz") != -1 ) {
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| 84 | _inspSegm = 40;
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| 85 | }
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| 86 | else if ( obsRate.indexOf("0.1 Hz") != -1 ) {
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| 87 | _inspSegm = 50;
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| 88 | }
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| 89 | _adviseFail = settings.value("adviseFail").toInt();
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| 90 | _adviseReco = settings.value("adviseReco").toInt();
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| 91 | _adviseScript = settings.value("adviseScript").toString();
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| 92 | expandEnvVar(_adviseScript);
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| 93 |
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| 94 | // Latency interval/average
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| 95 | // ------------------------
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| 96 | _perfIntr = 1;
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| 97 | QString perfIntr = settings.value("perfIntr").toString();
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| 98 | if ( perfIntr.isEmpty() ) {
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| 99 | _perfIntr = 1;
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| 100 | }
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| 101 | else if ( perfIntr.indexOf("2 sec") != -1 ) {
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| 102 | _perfIntr = 2;
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| 103 | }
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| 104 | else if ( perfIntr.indexOf("10 sec") != -1 ) {
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| 105 | _perfIntr = 10;
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| 106 | }
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| 107 | else if ( perfIntr.indexOf("1 min") != -1 ) {
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| 108 | _perfIntr = 60;
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| 109 | }
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| 110 | else if ( perfIntr.left(5).indexOf("5 min") != -1 ) {
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| 111 | _perfIntr = 300;
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| 112 | }
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| 113 | else if ( perfIntr.indexOf("15 min") != -1 ) {
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| 114 | _perfIntr = 900;
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| 115 | }
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| 116 | else if ( perfIntr.indexOf("1 hour") != -1 ) {
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| 117 | _perfIntr = 3600;
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| 118 | }
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| 119 | else if ( perfIntr.indexOf("6 hours") != -1 ) {
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| 120 | _perfIntr = 21600;
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| 121 | }
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| 122 | else if ( perfIntr.indexOf("1 day") != -1 ) {
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| 123 | _perfIntr = 86400;
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| 124 | }
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| 125 |
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| 126 | // RTCM message types
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| 127 | // ------------------
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| 128 | _checkMountPoint = settings.value("miscMount").toString();
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| 129 |
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| 130 | // Initialize private members
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| 131 | // --------------------------
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| 132 | _maxDt = 1000.0;
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| 133 | _wrongEpoch = false;
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| 134 | _checkSeg = false;
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| 135 | _numSucc = 0;
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| 136 | _secSucc = 0;
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| 137 | _secFail = 0;
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| 138 | _initPause = 0;
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| 139 | _currPause = 0;
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| 140 | _begCorrupt = false;
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| 141 | _endCorrupt = false;
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| 142 | _followSec = false;
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| 143 | _oldSecGPS = 0;
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| 144 | _newSecGPS = 0;
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| 145 | _numGaps = 0;
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| 146 | _diffSecGPS = 0;
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| 147 | _numLat = 0;
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| 148 | _sumLat = 0.0;
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| 149 | _sumLatQ = 0.0;
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| 150 | _meanDiff = 0.0;
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| 151 | _minLat = _maxDt;
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| 152 | _maxLat = -_maxDt;
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| 153 | _curLat = 0.0;
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| 154 |
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| 155 | _checkTime = QDateTime::currentDateTime();
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| 156 |
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| 157 | _begDateOut = _checkTime.toUTC().date().toString("yy-MM-dd"); // weber
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| 158 | _begTimeOut = _checkTime.toUTC().time().toString("hh:mm:ss");
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| 159 |
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| 160 | _decodeSucc = QDateTime::currentDateTime();
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| 161 |
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| 162 | _decodeStart = QDateTime::currentDateTime();
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| 163 | _decodeStop = QDateTime::currentDateTime();
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| 164 |
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| 165 | }
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| 166 |
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| 167 | // Destructor
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| 168 | //////////////////////////////////////////////////////////////////////////////
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| 169 | latencyChecker::~latencyChecker() {
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| 170 | }
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| 171 |
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| 172 | // Perform 'Begin outage' check
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| 173 | //////////////////////////////////////////////////////////////////////////////
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| 174 | void latencyChecker::checkReconnect() {
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| 175 |
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| 176 | if (_inspSegm == 0) { return;}
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| 177 |
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| 178 | // Begin outage threshold
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| 179 | // ----------------------
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| 180 | if ( _decodeStop.isValid() ) {
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| 181 | if ( _decodeStop.secsTo(QDateTime::currentDateTime()) > _adviseFail * 60 ) {
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| 182 | _decodeStop.setDate(QDate());
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| 183 | _decodeStop.setTime(QTime());
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| 184 | _begDateOut = _checkTime.toUTC().date().toString("yy-MM-dd");
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| 185 | _begTimeOut = _checkTime.toUTC().time().toString("hh:mm:ss");
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| 186 | emit(newMessage((_staID
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| 187 | + ": Failure threshold exceeded, outage since "
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| 188 | + _begDateOut + " " + _begTimeOut).toAscii(), true));
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| 189 | emit(newMessage((_staID + ": Begin_Outage " // weber
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| 190 | + _begDateOut + " " + _begTimeOut).toAscii(),true));
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| 191 | callScript(("Begin_Outage "
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| 192 | + _begDateOut + " " + _begTimeOut).toAscii());
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| 193 | }
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| 194 | }
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| 195 | _fromReconnect = true;
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| 196 | _decodeStart = QDateTime::currentDateTime();
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| 197 | }
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| 198 |
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| 199 | // Perform Corrupt and 'End outage' check
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| 200 | //////////////////////////////////////////////////////////////////////////////
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| 201 | void latencyChecker::checkOutage(bool decoded) {
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| 202 |
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| 203 | if (_inspSegm == 0) { return;}
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| 204 |
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| 205 | if (decoded) { _numSucc += 1; }
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| 206 |
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| 207 | if (!_checkPause.isValid() || _checkPause.secsTo(QDateTime::currentDateTime()) >= _currPause ) {
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| 208 | if (!_checkSeg) {
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| 209 | if ( _checkTime.secsTo(QDateTime::currentDateTime()) > _inspSegm ) {
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| 210 | _checkSeg = true;
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| 211 | }
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| 212 | }
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| 213 |
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| 214 | // Check - once per inspect segment
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| 215 | // --------------------------------
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| 216 | if (_checkSeg) {
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| 217 |
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| 218 | _checkTime = QDateTime::currentDateTime();
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| 219 |
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| 220 | if (_numSucc > 0) {
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| 221 | _secSucc += _inspSegm;
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| 222 | _decodeSucc = QDateTime::currentDateTime();
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| 223 | if (_secSucc > _adviseReco * 60) {
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| 224 | _secSucc = _adviseReco * 60 + 1;
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| 225 | }
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| 226 | _numSucc = 0;
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| 227 | _currPause = _initPause;
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| 228 | _checkPause.setDate(QDate());
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| 229 | _checkPause.setTime(QTime());
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| 230 | }
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| 231 | else {
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| 232 | _secFail += _inspSegm;
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| 233 | _secSucc = 0;
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| 234 | if (_secFail > _adviseFail * 60) {
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| 235 | _secFail = _adviseFail * 60 + 1;
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| 236 | }
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| 237 | if (!_checkPause.isValid()) {
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| 238 | _checkPause = QDateTime::currentDateTime();
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| 239 | }
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| 240 | else {
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| 241 | _checkPause.setDate(QDate());
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| 242 | _checkPause.setTime(QTime());
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| 243 | _secFail = _secFail + _currPause - _inspSegm;
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| 244 | _currPause = _currPause * 2;
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| 245 | if (_currPause > 960) {
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| 246 | _currPause = 960;
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| 247 | }
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| 248 | }
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| 249 | }
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| 250 |
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| 251 | // End corrupt threshold
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| 252 | // ---------------------
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| 253 | if ( _begCorrupt && !_endCorrupt && _secSucc > _adviseReco * 60 ) {
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| 254 | _endDateCor = QDateTime::currentDateTime()
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| 255 | .addSecs(- _adviseReco * 60)
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| 256 | .toUTC().date().toString("yy-MM-dd");
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| 257 | _endTimeCor = QDateTime::currentDateTime()
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| 258 | .addSecs(- _adviseReco * 60)
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| 259 | .toUTC().time().toString("hh:mm:ss");
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| 260 | emit(newMessage((_staID
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| 261 | + ": Recovery threshold exceeded, corruption ended "
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| 262 | + _endDateCor + " " + _endTimeCor).toAscii(), true));
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| 263 | callScript(("End_Corrupted "
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| 264 | + _endDateCor + " " + _endTimeCor + " Begin was "
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| 265 | + _begDateCor + " " + _begTimeCor).toAscii());
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| 266 | _endCorrupt = true;
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| 267 | _begCorrupt = false;
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| 268 | _secFail = 0;
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| 269 | }
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| 270 | else {
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| 271 |
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| 272 | // Begin corrupt threshold
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| 273 | // -----------------------
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| 274 | if ( !_begCorrupt && _secFail > _adviseFail * 60 ) {
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| 275 | _begDateCor = _decodeSucc.toUTC().date().toString("yy-MM-dd");
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| 276 | _begTimeCor = _decodeSucc.toUTC().time().toString("hh:mm:ss");
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| 277 | emit(newMessage((_staID
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| 278 | + ": Failure threshold exceeded, corrupted since "
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| 279 | + _begDateCor + " " + _begTimeCor).toAscii(), true));
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| 280 | callScript(("Begin_Corrupted "
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| 281 | + _begDateCor + " " + _begTimeCor).toAscii());
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| 282 | _begCorrupt = true;
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| 283 | _endCorrupt = false;
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| 284 | _secSucc = 0;
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| 285 | _numSucc = 0;
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| 286 | }
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| 287 | }
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| 288 | _checkSeg = false;
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| 289 | }
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| 290 | }
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| 291 |
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| 292 | if (_fromReconnect) {
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| 293 | _decodeStart = QDateTime::currentDateTime();
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| 294 | }
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| 295 |
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| 296 | // End outage threshold
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| 297 | // --------------------
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| 298 | if ( _decodeStart.isValid() ) {
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| 299 | if ( _decodeStart.secsTo(QDateTime::currentDateTime()) > _adviseReco * 60 ) {
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| 300 | _decodeStart.setDate(QDate());
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| 301 | _decodeStart.setTime(QTime());
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| 302 | _endDateOut = QDateTime::currentDateTime()
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| 303 | .addSecs(- _adviseReco * 60)
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| 304 | .toUTC().date().toString("yy-MM-dd");
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| 305 | _endTimeOut = QDateTime::currentDateTime()
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| 306 | .addSecs(- _adviseReco * 60)
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| 307 | .toUTC().time().toString("hh:mm:ss");
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| 308 | emit(newMessage((_staID
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| 309 | + ": Recovery threshold exceeded, outage ended "
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| 310 | + _endDateOut + " " + _endTimeOut).toAscii(), true));
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| 311 | emit(newMessage((_staID + ": End_Outage " // weber
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| 312 | + _endDateOut + " " + _endTimeOut + " Begin was "
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| 313 | + _begDateOut + " " + _begTimeOut).toAscii(),true));
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| 314 | callScript(("End_Outage "
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| 315 | + _endDateOut + " " + _endTimeOut + " Begin was "
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| 316 | + _begDateOut + " " + _begTimeOut).toAscii());
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| 317 | }
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| 318 | }
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| 319 | _fromReconnect = false;
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| 320 | _decodeStop = QDateTime::currentDateTime();
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| 321 | }
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| 322 |
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| 323 | // Perform latency checks (observations)
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| 324 | //////////////////////////////////////////////////////////////////////////////
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| 325 | void latencyChecker::checkObsLatency(const QList<t_satObs>& obsList) {
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| 326 |
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| 327 | if (_perfIntr > 0 ) {
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| 328 |
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| 329 | QListIterator<t_satObs> it(obsList);
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| 330 | while (it.hasNext()) {
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| 331 | const t_satObs& obs = it.next();
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| 332 |
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| 333 | _newSecGPS = static_cast<int>(obs._time.gpssec());
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| 334 | if (_newSecGPS != _oldSecGPS) {
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| 335 | if (_newSecGPS % _perfIntr < _oldSecGPS % _perfIntr) {
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| 336 | if (_numLat > 0) {
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| 337 | if (_meanDiff > 0.0) {
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| 338 | if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
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| 339 | emit( newMessage(QString("%1: Mean latency %2 sec, min %3, max %4, rms %5, %6 epochs, %7 gaps")
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| 340 | .arg(_staID.data())
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| 341 | .arg(int(_sumLat/_numLat*100)/100.)
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| 342 | .arg(int(_minLat*100)/100.)
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| 343 | .arg(int(_maxLat*100)/100.)
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| 344 | .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
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| 345 | .arg(_numLat)
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| 346 | .arg(_numGaps)
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| 347 | .toAscii(), true) );
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| 348 | }
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| 349 | } else {
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| 350 | if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
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| 351 | emit( newMessage(QString("%1: Mean latency %2 sec, min %3, max %4, rms %5, %6 epochs")
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| 352 | .arg(_staID.data())
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| 353 | .arg(int(_sumLat/_numLat*100)/100.)
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| 354 | .arg(int(_minLat*100)/100.)
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| 355 | .arg(int(_maxLat*100)/100.)
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| 356 | .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
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| 357 | .arg(_numLat)
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| 358 | .toAscii(), true) );
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| 359 | }
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| 360 | }
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| 361 | }
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| 362 | _meanDiff = _diffSecGPS / _numLat;
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| 363 | _diffSecGPS = 0;
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| 364 | _numGaps = 0;
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| 365 | _sumLat = 0.0;
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| 366 | _sumLatQ = 0.0;
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| 367 | _numLat = 0;
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| 368 | _minLat = _maxDt;
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| 369 | _maxLat = -_maxDt;
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| 370 | }
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| 371 | if (_followSec) {
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| 372 | _diffSecGPS += _newSecGPS - _oldSecGPS;
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| 373 | if (_meanDiff>0.) {
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| 374 | if (_newSecGPS - _oldSecGPS > 1.5 * _meanDiff) {
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| 375 | _numGaps += 1;
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| 376 | }
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| 377 | }
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| 378 | }
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| 379 |
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| 380 | // Compute the observations latency
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| 381 | // --------------------------------
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| 382 | int week;
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| 383 | double sec;
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| 384 | currentGPSWeeks(week, sec);
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| 385 | const double secPerWeek = 7.0 * 24.0 * 3600.0;
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| 386 | if (week < int(obs._time.gpsw())) {
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| 387 | week += 1;
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| 388 | sec -= secPerWeek;
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| 389 | }
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| 390 | if (week > int(obs._time.gpsw())) {
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| 391 | week -= 1;
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| 392 | sec += secPerWeek;
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| 393 | }
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| 394 | _curLat = sec - obs._time.gpssec();
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| 395 | _sumLat += _curLat;
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| 396 | _sumLatQ += _curLat * _curLat;
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| 397 | if (_curLat < _minLat) {
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| 398 | _minLat = _curLat;
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| 399 | }
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| 400 | if (_curLat >= _maxLat) {
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| 401 | _maxLat = _curLat;
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| 402 | }
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| 403 | _numLat += 1;
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| 404 | _oldSecGPS = _newSecGPS;
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| 405 | _followSec = true;
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| 406 | }
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| 407 | }
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| 408 | }
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| 409 | }
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| 410 |
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| 411 | // Perform latency checks (corrections)
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| 412 | //////////////////////////////////////////////////////////////////////////////
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| 413 | void latencyChecker::checkCorrLatency(int corrGPSEpochTime) {
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| 414 |
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| 415 | if (corrGPSEpochTime < 0) {
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| 416 | return;
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| 417 | }
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| 418 |
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| 419 | if (_perfIntr > 0) {
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| 420 |
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| 421 | _newSecGPS = corrGPSEpochTime;
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| 422 |
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| 423 | int week;
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| 424 | double sec;
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| 425 | currentGPSWeeks(week, sec);
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| 426 | double dt = fabs(sec - _newSecGPS);
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| 427 | const double secPerWeek = 7.0 * 24.0 * 3600.0;
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| 428 | if (dt > 0.5 * secPerWeek) {
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| 429 | if (sec > _newSecGPS) {
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| 430 | sec -= secPerWeek;
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| 431 | } else {
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| 432 | sec += secPerWeek;
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| 433 | }
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| 434 | }
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| 435 | if (_newSecGPS != _oldSecGPS) {
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| 436 | if (int(_newSecGPS) % _perfIntr < int(_oldSecGPS) % _perfIntr) {
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| 437 | if (_numLat>0) {
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| 438 | QString late;
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| 439 | if (_meanDiff>0.) {
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| 440 | late = QString(": Mean latency %1 sec, min %2, max %3, rms %4, %5 epochs, %6 gaps")
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| 441 | .arg(int(_sumLat/_numLat*100)/100.)
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| 442 | .arg(int(_minLat*100)/100.)
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| 443 | .arg(int(_maxLat*100)/100.)
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| 444 | .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
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| 445 | .arg(_numLat)
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| 446 | .arg(_numGaps);
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| 447 | if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
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| 448 | emit(newMessage(QString(_staID + late ).toAscii(), true) );
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| 449 | }
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| 450 | }
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| 451 | else {
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| 452 | late = QString(": Mean latency %1 sec, min %2, max %3, rms %4, %5 epochs")
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| 453 | .arg(int(_sumLat/_numLat*100)/100.)
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| 454 | .arg(int(_minLat*100)/100.)
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| 455 | .arg(int(_maxLat*100)/100.)
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| 456 | .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
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| 457 | .arg(_numLat);
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| 458 | if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
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| 459 | emit(newMessage(QString(_staID + late ).toAscii(), true) );
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| 460 | }
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| 461 | }
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| 462 | }
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| 463 | _meanDiff = int(_diffSecGPS)/_numLat;
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| 464 | _diffSecGPS = 0;
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| 465 | _numGaps = 0;
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| 466 | _sumLat = 0.0;
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| 467 | _sumLatQ = 0.0;
|
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| 468 | _numLat = 0;
|
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| 469 | _minLat = 1000.;
|
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| 470 | _maxLat = -1000.;
|
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| 471 | }
|
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| 472 | if (_followSec) {
|
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| 473 | _diffSecGPS += _newSecGPS - _oldSecGPS;
|
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| 474 | if (_meanDiff>0.) {
|
|---|
| 475 | if (_newSecGPS - _oldSecGPS > 1.5 * _meanDiff) {
|
|---|
| 476 | _numGaps += 1;
|
|---|
| 477 | }
|
|---|
| 478 | }
|
|---|
| 479 | }
|
|---|
| 480 | _curLat = sec - _newSecGPS;
|
|---|
| 481 | _sumLat += _curLat;
|
|---|
| 482 | _sumLatQ += _curLat * _curLat;
|
|---|
| 483 | if (_curLat < _minLat) {
|
|---|
| 484 | _minLat = _curLat;
|
|---|
| 485 | }
|
|---|
| 486 | if (_curLat >= _maxLat) {
|
|---|
| 487 | _maxLat = _curLat;
|
|---|
| 488 | }
|
|---|
| 489 | _numLat += 1;
|
|---|
| 490 | _oldSecGPS = _newSecGPS;
|
|---|
| 491 | _followSec = true;
|
|---|
| 492 | }
|
|---|
| 493 | }
|
|---|
| 494 | }
|
|---|
| 495 |
|
|---|
| 496 | // Call advisory notice script
|
|---|
| 497 | ////////////////////////////////////////////////////////////////////////////
|
|---|
| 498 | void latencyChecker::callScript(const char* comment) {
|
|---|
| 499 | if (!_adviseScript.isEmpty()) {
|
|---|
| 500 | #ifdef WIN32
|
|---|
| 501 | Sleep(1);
|
|---|
| 502 | QProcess::startDetached(_adviseScript, QStringList() << _staID << comment) ;
|
|---|
| 503 | #else
|
|---|
| 504 | sleep(1);
|
|---|
| 505 | QProcess::startDetached("nohup", QStringList() << _adviseScript << _staID << comment) ;
|
|---|
| 506 | #endif
|
|---|
| 507 | }
|
|---|
| 508 | }
|
|---|
