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 | _followSec = false;
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141 | _oldSecGPS = 0;
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142 | _newSecGPS = 0;
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143 | _numGaps = 0;
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144 | _diffSecGPS = 0;
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145 | _numLat = 0;
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146 | _sumLat = 0.0;
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147 | _sumLatQ = 0.0;
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148 | _meanDiff = 0.0;
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149 | _minLat = _maxDt;
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150 | _maxLat = -_maxDt;
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151 | _curLat = 0.0;
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152 |
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153 | _checkTime = QDateTime::currentDateTime();
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154 | _decodeSucc = QDateTime::currentDateTime();
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155 |
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156 | _decodeStop = QDateTime::currentDateTime();
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157 | _begDateTimeOut = QDateTime::currentDateTime();
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158 | _endDateTimeOut = QDateTime::currentDateTime();
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159 | _fromReconnect = false;
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160 |
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161 | _decodeStopCorr = QDateTime::currentDateTime();
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162 | _begDateTimeCorr = QDateTime::currentDateTime();
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163 | _endDateTimeCorr = 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 (!_fromReconnect) {
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181 | _endDateTimeOut = QDateTime::currentDateTime();
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182 | }
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183 | _fromReconnect = true;
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184 |
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185 | if ( _decodeStop.isValid() ) {
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186 | _begDateTimeOut = QDateTime::currentDateTime();
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187 | if ( _endDateTimeOut.secsTo(QDateTime::currentDateTime()) > _adviseFail * 60 ) {
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188 | _begDateOut = _endDateTimeOut.toUTC().date().toString("yy-MM-dd");
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189 | _begTimeOut = _endDateTimeOut.toUTC().time().toString("hh:mm:ss");
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190 | emit(newMessage((_staID + ": Failure threshold exceeded, outage since "
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191 | + _begDateOut + " " + _begTimeOut + " UTC").toAscii(), true));
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192 | callScript(("Begin_Outage "
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193 | + _begDateOut + " " + _begTimeOut + " UTC").toAscii());
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194 | _decodeStop.setDate(QDate());
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195 | _decodeStop.setTime(QTime());
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196 | _decodeStart = QDateTime::currentDateTime();
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197 | }
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198 | }
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199 | }
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200 |
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201 | // Perform Corrupt and 'End outage' check
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202 | //////////////////////////////////////////////////////////////////////////////
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203 | void latencyChecker::checkOutage(bool decoded) {
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204 |
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205 | if (_inspSegm == 0) { return;}
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206 |
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207 | if (decoded) { _numSucc += 1; }
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208 |
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209 | if (!_checkPause.isValid() || _checkPause.secsTo(QDateTime::currentDateTime()) >= _currPause ) {
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210 | if (!_checkSeg) {
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211 | if ( _checkTime.secsTo(QDateTime::currentDateTime()) > _inspSegm ) {
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212 | _checkSeg = true;
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213 | }
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214 | }
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215 |
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216 | // Check - once per inspect segment
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217 | // --------------------------------
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218 | if (_checkSeg) {
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219 |
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220 | _checkTime = QDateTime::currentDateTime();
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221 |
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222 | if (_numSucc > 0) {
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223 | _secSucc += _inspSegm;
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224 | _secFail = 0;
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225 | _decodeSucc = QDateTime::currentDateTime();
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226 | if (_secSucc > _adviseReco * 60) {
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227 | _secSucc = _adviseReco * 60 + 1;
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228 | }
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229 | _numSucc = 0;
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230 | _currPause = _initPause;
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231 | _checkPause.setDate(QDate());
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232 | _checkPause.setTime(QTime());
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233 | }
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234 | else {
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235 | _secFail += _inspSegm;
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236 | _secSucc = 0;
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237 | if (_secFail > _adviseFail * 60) {
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238 | _secFail = _adviseFail * 60 + 1;
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239 | }
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240 | if (!_checkPause.isValid()) {
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241 | _checkPause = QDateTime::currentDateTime();
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242 | }
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243 | else {
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244 | _checkPause.setDate(QDate());
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245 | _checkPause.setTime(QTime());
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246 | _secFail = _secFail + _currPause - _inspSegm;
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247 | _currPause = _currPause * 2;
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248 | if (_currPause > 960) {
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249 | _currPause = 960;
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250 | }
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251 | }
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252 | }
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253 |
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254 | // Begin corrupt threshold
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255 | // -----------------------
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256 | if (_secSucc > 0) {
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257 | _endDateTimeCorr = QDateTime::currentDateTime();
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258 | }
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259 |
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260 | if (_secFail > 0) {
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261 | _begDateTimeCorr = QDateTime::currentDateTime();
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262 | }
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263 |
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264 | if ( _decodeStopCorr.isValid() ) {
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265 | _begDateTimeCorr = QDateTime::currentDateTime();
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266 | if ( _endDateTimeCorr.secsTo(QDateTime::currentDateTime()) > _adviseFail * 60 ) {
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267 | _begDateCorr = _endDateTimeCorr.toUTC().date().toString("yy-MM-dd");
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268 | _begTimeCorr = _endDateTimeCorr.toUTC().time().toString("hh:mm:ss");
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269 | emit(newMessage((_staID + ": Failure threshold exceeded, corrupted since "
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270 | + _begDateCorr + " " + _begTimeCorr + " UTC").toAscii(), true));
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271 | callScript(("Begin_Corrupted "
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272 | + _begDateCorr + " " + _begTimeCorr + " UTC").toAscii());
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273 | _secSucc = 0;
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274 | _numSucc = 0;
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275 | _decodeStopCorr.setDate(QDate());
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276 | _decodeStopCorr.setTime(QTime());
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277 | _decodeStartCorr = QDateTime::currentDateTime();
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278 | }
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279 | }
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280 | else {
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281 |
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282 | // End corrupt threshold
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283 | // ---------------------
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284 | if ( _decodeStartCorr.isValid() ) {
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285 | _endDateTimeCorr = QDateTime::currentDateTime();
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286 | if ( _begDateTimeCorr.secsTo(QDateTime::currentDateTime()) > _adviseReco * 60 ) {
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287 | _endDateCorr = _begDateTimeCorr.toUTC().date().toString("yy-MM-dd");
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288 | _endTimeCorr = _begDateTimeCorr.toUTC().time().toString("hh:mm:ss");
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289 | emit(newMessage((_staID + ": Recovery threshold exceeded, corruption ended "
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290 | + _endDateCorr + " " + _endTimeCorr + " UTC").toAscii(), true));
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291 | callScript(("End_Corrupted "
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292 | + _endDateCorr + " " + _endTimeCorr + " UTC Begin was "
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293 | + _begDateCorr + " " + _begTimeCorr + " UTC").toAscii());
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294 | _decodeStartCorr.setDate(QDate());
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295 | _decodeStartCorr.setTime(QTime());
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296 | _decodeStopCorr = QDateTime::currentDateTime();
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297 | _secFail = 0;
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298 | }
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299 | }
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300 | }
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301 | _checkSeg = false;
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302 | }
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303 | }
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304 |
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305 | // End outage threshold
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306 | // --------------------
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307 | if (_fromReconnect) {
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308 | _begDateTimeOut = QDateTime::currentDateTime();
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309 | }
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310 | _fromReconnect = false;
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311 |
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312 | if ( _decodeStart.isValid() ) {
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313 | _endDateTimeOut = QDateTime::currentDateTime();
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314 | if ( _begDateTimeOut.secsTo(QDateTime::currentDateTime()) > _adviseReco * 60 ) {
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315 | _endDateOut = _begDateTimeOut.toUTC().date().toString("yy-MM-dd");
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316 | _endTimeOut = _begDateTimeOut.toUTC().time().toString("hh:mm:ss");
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317 | emit(newMessage((_staID + ": Recovery threshold exceeded, outage ended "
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318 | + _endDateOut + " " + _endTimeOut + " UTC").toAscii(), true));
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319 | callScript(("End_Outage "
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320 | + _endDateOut + " " + _endTimeOut + " UTC Begin was "
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321 | + _begDateOut + " " + _begTimeOut + " UTC").toAscii());
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322 | _decodeStart.setDate(QDate());
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323 | _decodeStart.setTime(QTime());
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324 | _decodeStop = QDateTime::currentDateTime();
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325 | }
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326 | }
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327 | }
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328 |
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329 | // Perform latency checks (observations)
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330 | //////////////////////////////////////////////////////////////////////////////
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331 | void latencyChecker::checkObsLatency(const QList<t_satObs>& obsList) {
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332 |
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333 | if (_perfIntr > 0 ) {
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334 |
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335 | QListIterator<t_satObs> it(obsList);
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336 | while (it.hasNext()) {
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337 | const t_satObs& obs = it.next();
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338 |
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339 | _newSecGPS = static_cast<int>(obs._time.gpssec());
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340 | if (_newSecGPS != _oldSecGPS) {
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341 | if (_newSecGPS % _perfIntr < _oldSecGPS % _perfIntr) {
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342 | if (_numLat > 0) {
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343 | if (_meanDiff > 0.0) {
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344 | if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
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345 | emit( newMessage(QString("%1: Mean latency %2 sec, min %3, max %4, rms %5, %6 epochs, %7 gaps")
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346 | .arg(_staID.data())
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347 | .arg(int(_sumLat/_numLat*100)/100.)
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348 | .arg(int(_minLat*100)/100.)
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349 | .arg(int(_maxLat*100)/100.)
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350 | .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
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351 | .arg(_numLat)
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352 | .arg(_numGaps)
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353 | .toAscii(), true) );
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354 | }
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355 | } else {
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356 | if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
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357 | emit( newMessage(QString("%1: Mean latency %2 sec, min %3, max %4, rms %5, %6 epochs")
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358 | .arg(_staID.data())
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359 | .arg(int(_sumLat/_numLat*100)/100.)
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360 | .arg(int(_minLat*100)/100.)
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361 | .arg(int(_maxLat*100)/100.)
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362 | .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
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363 | .arg(_numLat)
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364 | .toAscii(), true) );
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365 | }
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366 | }
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367 | }
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368 | _meanDiff = _diffSecGPS / _numLat;
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369 | _diffSecGPS = 0;
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370 | _numGaps = 0;
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371 | _sumLat = 0.0;
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372 | _sumLatQ = 0.0;
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373 | _numLat = 0;
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374 | _minLat = _maxDt;
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375 | _maxLat = -_maxDt;
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376 | }
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377 | if (_followSec) {
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378 | _diffSecGPS += _newSecGPS - _oldSecGPS;
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379 | if (_meanDiff>0.) {
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380 | if (_newSecGPS - _oldSecGPS > 1.5 * _meanDiff) {
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381 | _numGaps += 1;
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382 | }
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383 | }
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384 | }
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385 |
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386 | // Compute the observations latency
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387 | // --------------------------------
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388 | int week;
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389 | double sec;
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390 | currentGPSWeeks(week, sec);
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391 | const double secPerWeek = 7.0 * 24.0 * 3600.0;
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392 | if (week < int(obs._time.gpsw())) {
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393 | week += 1;
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394 | sec -= secPerWeek;
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395 | }
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396 | if (week > int(obs._time.gpsw())) {
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397 | week -= 1;
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398 | sec += secPerWeek;
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399 | }
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400 | _curLat = sec - obs._time.gpssec();
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401 | _sumLat += _curLat;
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402 | _sumLatQ += _curLat * _curLat;
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403 | if (_curLat < _minLat) {
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404 | _minLat = _curLat;
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405 | }
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406 | if (_curLat >= _maxLat) {
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407 | _maxLat = _curLat;
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408 | }
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409 | _numLat += 1;
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410 | _oldSecGPS = _newSecGPS;
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411 | _followSec = true;
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412 | }
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413 | }
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414 | }
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415 | }
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416 |
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417 | // Perform latency checks (corrections)
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418 | //////////////////////////////////////////////////////////////////////////////
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419 | void latencyChecker::checkCorrLatency(int corrGPSEpochTime) {
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420 |
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421 | if (corrGPSEpochTime < 0) {
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422 | return;
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423 | }
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424 |
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425 | if (_perfIntr > 0) {
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426 |
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427 | _newSecGPS = corrGPSEpochTime;
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428 |
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429 | int week;
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430 | double sec;
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431 | currentGPSWeeks(week, sec);
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432 | double dt = fabs(sec - _newSecGPS);
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433 | const double secPerWeek = 7.0 * 24.0 * 3600.0;
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434 | if (dt > 0.5 * secPerWeek) {
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435 | if (sec > _newSecGPS) {
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436 | sec -= secPerWeek;
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437 | } else {
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438 | sec += secPerWeek;
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439 | }
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440 | }
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441 | if (_newSecGPS != _oldSecGPS) {
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442 | if (int(_newSecGPS) % _perfIntr < int(_oldSecGPS) % _perfIntr) {
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443 | if (_numLat>0) {
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444 | QString late;
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445 | if (_meanDiff>0.) {
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446 | late = QString(": Mean latency %1 sec, min %2, max %3, rms %4, %5 epochs, %6 gaps")
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447 | .arg(int(_sumLat/_numLat*100)/100.)
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448 | .arg(int(_minLat*100)/100.)
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449 | .arg(int(_maxLat*100)/100.)
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450 | .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
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451 | .arg(_numLat)
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452 | .arg(_numGaps);
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453 | if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
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454 | emit(newMessage(QString(_staID + late ).toAscii(), true) );
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455 | }
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456 | }
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457 | else {
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458 | late = QString(": Mean latency %1 sec, min %2, max %3, rms %4, %5 epochs")
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459 | .arg(int(_sumLat/_numLat*100)/100.)
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460 | .arg(int(_minLat*100)/100.)
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461 | .arg(int(_maxLat*100)/100.)
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462 | .arg(int((sqrt((_sumLatQ - _sumLat * _sumLat / _numLat)/_numLat))*100)/100.)
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463 | .arg(_numLat);
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464 | if ( _checkMountPoint == _staID || _checkMountPoint == "ALL" ) {
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465 | emit(newMessage(QString(_staID + late ).toAscii(), true) );
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466 | }
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467 | }
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468 | }
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469 | _meanDiff = int(_diffSecGPS)/_numLat;
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470 | _diffSecGPS = 0;
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471 | _numGaps = 0;
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472 | _sumLat = 0.0;
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473 | _sumLatQ = 0.0;
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474 | _numLat = 0;
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475 | _minLat = 1000.;
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476 | _maxLat = -1000.;
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477 | }
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478 | if (_followSec) {
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479 | _diffSecGPS += _newSecGPS - _oldSecGPS;
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480 | if (_meanDiff>0.) {
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481 | if (_newSecGPS - _oldSecGPS > 1.5 * _meanDiff) {
|
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482 | _numGaps += 1;
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483 | }
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484 | }
|
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485 | }
|
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486 | _curLat = sec - _newSecGPS;
|
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487 | _sumLat += _curLat;
|
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488 | _sumLatQ += _curLat * _curLat;
|
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489 | if (_curLat < _minLat) {
|
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490 | _minLat = _curLat;
|
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491 | }
|
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492 | if (_curLat >= _maxLat) {
|
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493 | _maxLat = _curLat;
|
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494 | }
|
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495 | _numLat += 1;
|
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496 | _oldSecGPS = _newSecGPS;
|
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497 | _followSec = true;
|
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498 | }
|
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499 | }
|
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500 | }
|
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501 |
|
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502 | // Call advisory notice script
|
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503 | ////////////////////////////////////////////////////////////////////////////
|
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504 | void latencyChecker::callScript(const char* comment) {
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505 | if (!_adviseScript.isEmpty()) {
|
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506 | #ifdef WIN32
|
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507 | Sleep(1);
|
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508 | QProcess::startDetached(_adviseScript, QStringList() << _staID << comment) ;
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509 | #else
|
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510 | sleep(1);
|
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511 | QProcess::startDetached("nohup", QStringList() << _adviseScript << _staID << comment) ;
|
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512 | #endif
|
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513 | }
|
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514 | }
|
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