[2035] | 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: bncPPPclient
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| 30 | *
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| 31 | * Purpose: Precise Point Positioning
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| 32 | *
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| 33 | * Author: L. Mervart
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| 34 | *
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| 35 | * Created: 21-Nov-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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[2249] | 41 | #include <newmatio.h>
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[2238] | 42 | #include <iomanip>
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[2549] | 43 | #include <sstream>
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[2238] | 44 |
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[2035] | 45 | #include "bncpppclient.h"
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[2113] | 46 | #include "bncapp.h"
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[2043] | 47 | #include "bncutils.h"
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[2044] | 48 | #include "bncconst.h"
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[2058] | 49 | #include "bncmodel.h"
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[3635] | 50 | #include "pppopt.h"
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[2035] | 51 |
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| 52 | using namespace std;
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| 53 |
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| 54 | // Constructor
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| 55 | ////////////////////////////////////////////////////////////////////////////
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[3640] | 56 | bncPPPclient::bncPPPclient(QByteArray staID, t_pppOpt* opt, bool connectSlots) :
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| 57 | bncEphUser(connectSlots) {
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[2113] | 58 |
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[3635] | 59 | if (opt) {
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| 60 | _opt = opt;
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| 61 | _optOwner = false;
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[2226] | 62 | }
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| 63 | else {
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[3635] | 64 | _opt = new t_pppOpt();
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| 65 | _optOwner = true;
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[2226] | 66 | }
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| 67 |
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[3635] | 68 | _staID = staID;
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[2776] | 69 |
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[3638] | 70 | _model = new bncModel(this);
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| 71 |
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[3640] | 72 | if (connectSlots) {
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| 73 | connect(this, SIGNAL(newMessage(QByteArray,bool)),
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| 74 | ((bncApp*)qApp), SLOT(slotMessage(const QByteArray,bool)));
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[2548] | 75 |
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[3640] | 76 | connect(((bncApp*)qApp), SIGNAL(newCorrections(QList<QString>)),
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| 77 | this, SLOT(slotNewCorrections(QList<QString>)));
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| 78 | }
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[2035] | 79 | }
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| 80 |
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| 81 | // Destructor
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| 82 | ////////////////////////////////////////////////////////////////////////////
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| 83 | bncPPPclient::~bncPPPclient() {
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[2058] | 84 | delete _model;
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[2808] | 85 | while (!_epoData.empty()) {
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| 86 | delete _epoData.front();
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| 87 | _epoData.pop();
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| 88 | }
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[2035] | 89 | QMapIterator<QString, t_corr*> ic(_corr);
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| 90 | while (ic.hasNext()) {
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| 91 | ic.next();
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| 92 | delete ic.value();
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| 93 | }
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[2274] | 94 | QMapIterator<QString, t_bias*> ib(_bias);
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| 95 | while (ib.hasNext()) {
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| 96 | ib.next();
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| 97 | delete ib.value();
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| 98 | }
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[3635] | 99 | if (_optOwner) {
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| 100 | delete _opt;
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| 101 | }
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[2035] | 102 | }
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| 103 |
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| 104 | //
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| 105 | ////////////////////////////////////////////////////////////////////////////
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[2711] | 106 | void bncPPPclient::putNewObs(const t_obs& obs) {
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[2037] | 107 | QMutexLocker locker(&_mutex);
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[2051] | 108 |
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[2777] | 109 | if (obs.satSys == 'R') {
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[3635] | 110 | if (!_opt->useGlonass) return;
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[2225] | 111 | }
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[2777] | 112 | else if (obs.satSys == 'E') {
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[3635] | 113 | if (!_opt->useGalileo) return;
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[2776] | 114 | }
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| 115 | else if (obs.satSys != 'G') {
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| 116 | return;
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| 117 | }
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[2225] | 118 |
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[2051] | 119 | t_satData* satData = new t_satData();
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[2808] | 120 | satData->tt = bncTime(obs.GPSWeek, obs.GPSWeeks);
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[2051] | 121 |
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[2274] | 122 | // Satellite Number
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| 123 | // ----------------
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[2777] | 124 | satData->prn = QString("%1%2").arg(obs.satSys).arg(obs.satNum,2,10,QChar('0'));
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[2274] | 125 |
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[2505] | 126 | // Check Slips
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| 127 | // -----------
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| 128 | slipInfo& sInfo = _slips[satData->prn];
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[2711] | 129 | if ( sInfo.slipCntL1 == obs.slip_cnt_L1 &&
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[2778] | 130 | sInfo.slipCntL2 == obs.slip_cnt_L2 &&
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| 131 | sInfo.slipCntL5 == obs.slip_cnt_L5 ) {
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[2505] | 132 | satData->slipFlag = false;
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| 133 | }
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| 134 | else {
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| 135 | satData->slipFlag = true;
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| 136 | }
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[2711] | 137 | sInfo.slipCntL1 = obs.slip_cnt_L1;
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| 138 | sInfo.slipCntL2 = obs.slip_cnt_L2;
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[2505] | 139 |
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[2274] | 140 | // Handle Code Biases
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| 141 | // ------------------
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| 142 | t_bias* bb = 0;
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| 143 | if (_bias.contains(satData->prn)) {
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| 144 | bb = _bias.value(satData->prn);
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| 145 | }
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| 146 |
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[2808] | 147 | // Add new epoch, process the older ones
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| 148 | // -------------------------------------
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| 149 | if (_epoData.size() == 0) {
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| 150 | _epoData.push(new t_epoData());
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| 151 | _epoData.back()->tt = satData->tt;
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[2037] | 152 | }
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[2808] | 153 | else if (satData->tt != _epoData.back()->tt) {
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| 154 | processEpochs();
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| 155 | _epoData.push(new t_epoData());
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| 156 | _epoData.back()->tt = satData->tt;
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[2037] | 157 | }
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[2039] | 158 |
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[2786] | 159 | // Set Observations GPS
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| 160 | // --------------------
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[2711] | 161 | if (obs.satSys == 'G') {
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[4264] | 162 | if ( (obs.P1 || obs.C1) && (obs.P2 || obs.C2) && obs.l1() && obs.l2() ) {
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[2786] | 163 | double f1 = t_CST::freq1;
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| 164 | double f2 = t_CST::freq2;
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| 165 | double c1 = f1 * f1 / (f1 * f1 - f2 * f2);
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| 166 | double c2 = - f2 * f2 / (f1 * f1 - f2 * f2);
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| 167 | if (obs.P1) {
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| 168 | satData->P1 = obs.P1 + (bb ? bb->p1 : 0.0);
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| 169 | }
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| 170 | else {
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| 171 | satData->P1 = obs.C1 + (bb ? bb->c1 : 0.0);
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| 172 | }
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| 173 | if (obs.P2) {
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| 174 | satData->P2 = obs.P2 + (bb ? bb->p2 : 0.0);
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| 175 | }
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| 176 | else {
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| 177 | satData->P2 = obs.C2;
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| 178 | }
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[4264] | 179 | satData->L1 = obs.l1() * t_CST::c / f1;
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| 180 | satData->L2 = obs.l2() * t_CST::c / f2;
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[2786] | 181 | satData->P3 = c1 * satData->P1 + c2 * satData->P2;
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| 182 | satData->L3 = c1 * satData->L1 + c2 * satData->L2;
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| 183 | satData->lambda3 = c1 * t_CST::c / f1 + c2 * t_CST::c / f2;
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[2778] | 184 |
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[3408] | 185 | _epoData.back()->satData[satData->prn] = satData;
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[2778] | 186 | }
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| 187 | else {
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| 188 | delete satData;
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| 189 | }
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[2786] | 190 | }
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[2778] | 191 |
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[2786] | 192 | // Set Observations GLONASS
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| 193 | // ------------------------
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[2711] | 194 | else if (obs.satSys == 'R') {
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[4264] | 195 | if ( (obs.P1 || obs.C1) && (obs.P2 || obs.C2) && obs.l1() && obs.l2() ) {
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[4265] | 196 | double f1 = t_CST::f1(obs.satSys, obs.slotNum);
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| 197 | double f2 = t_CST::f1(obs.satSys, obs.slotNum);
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[2786] | 198 | double c1 = f1 * f1 / (f1 * f1 - f2 * f2);
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| 199 | double c2 = - f2 * f2 / (f1 * f1 - f2 * f2);
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| 200 | if (obs.P1) {
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| 201 | satData->P1 = obs.P1 + (bb ? bb->p1 : 0.0);
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| 202 | }
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| 203 | else {
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| 204 | satData->P1 = obs.C1 + (bb ? bb->c1 : 0.0);
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| 205 | }
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| 206 | if (obs.P2) {
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| 207 | satData->P2 = obs.P2 + (bb ? bb->p2 : 0.0);
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| 208 | }
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| 209 | else {
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| 210 | satData->P2 = obs.C2;
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| 211 | }
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[4264] | 212 | satData->L1 = obs.l1() * t_CST::c / f1;
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| 213 | satData->L2 = obs.l2() * t_CST::c / f2;
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[2786] | 214 | satData->P3 = c1 * satData->P1 + c2 * satData->P2;
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| 215 | satData->L3 = c1 * satData->L1 + c2 * satData->L2;
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| 216 | satData->lambda3 = c1 * t_CST::c / f1 + c2 * t_CST::c / f2;
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[2778] | 217 |
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[3408] | 218 | _epoData.back()->satData[satData->prn] = satData;
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[2778] | 219 | }
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| 220 | else {
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| 221 | delete satData;
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| 222 | }
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[2786] | 223 | }
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[2778] | 224 |
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[2786] | 225 | // Set Observations Galileo
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| 226 | // ------------------------
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[2778] | 227 | else if (obs.satSys == 'E') {
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[4264] | 228 | if ( obs.C1 && obs.C5 && obs.l1() && obs.L5) {
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[2786] | 229 | double f1 = t_CST::freq1;
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| 230 | double f5 = t_CST::freq5;
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| 231 | double c1 = f1 * f1 / (f1 * f1 - f5 * f5);
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| 232 | double c5 = - f5 * f5 / (f1 * f1 - f5 * f5);
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[2778] | 233 |
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[2786] | 234 | satData->P1 = obs.C1;
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| 235 | satData->P5 = obs.C5;
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[4264] | 236 | satData->L1 = obs.l1() * t_CST::c / f1;
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[2786] | 237 | satData->L5 = obs.L5 * t_CST::c / f5;
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| 238 | satData->P3 = c1 * satData->P1 + c5 * satData->P5;
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| 239 | satData->L3 = c1 * satData->L1 + c5 * satData->L5;
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| 240 | satData->lambda3 = c1 * t_CST::c / f1 + c5 * t_CST::c / f5;
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[3408] | 241 | _epoData.back()->satData[satData->prn] = satData;
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[2778] | 242 | }
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| 243 | else {
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| 244 | delete satData;
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| 245 | }
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| 246 | }
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[2035] | 247 | }
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| 248 |
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| 249 | //
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| 250 | ////////////////////////////////////////////////////////////////////////////
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| 251 | void bncPPPclient::slotNewCorrections(QList<QString> corrList) {
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| 252 | QMutexLocker locker(&_mutex);
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[2069] | 253 |
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[2966] | 254 | // Check the Mountpoint (source of corrections)
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| 255 | // --------------------------------------------
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[3635] | 256 | if (!_opt->pppCorrMount.isEmpty()) {
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[2966] | 257 | QMutableListIterator<QString> itm(corrList);
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| 258 | while (itm.hasNext()) {
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| 259 | QStringList hlp = itm.next().split(" ");
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| 260 | if (hlp.size() > 0) {
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| 261 | QString mountpoint = hlp[hlp.size()-1];
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[3635] | 262 | if (mountpoint != _opt->pppCorrMount) {
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[2966] | 263 | itm.remove();
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| 264 | }
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| 265 | }
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| 266 | }
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| 267 | }
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| 268 |
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[2069] | 269 | if (corrList.size() == 0) {
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| 270 | return;
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| 271 | }
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| 272 |
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[2035] | 273 | QListIterator<QString> it(corrList);
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| 274 | while (it.hasNext()) {
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[2911] | 275 | QString line = it.next();
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| 276 |
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| 277 | QTextStream in(&line);
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[2035] | 278 | int messageType;
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| 279 | int updateInterval;
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| 280 | int GPSweek;
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| 281 | double GPSweeks;
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| 282 | QString prn;
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| 283 | in >> messageType >> updateInterval >> GPSweek >> GPSweeks >> prn;
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[2809] | 284 |
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[2911] | 285 | if ( t_corr::relevantMessageType(messageType) ) {
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[2035] | 286 | t_corr* cc = 0;
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| 287 | if (_corr.contains(prn)) {
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| 288 | cc = _corr.value(prn);
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| 289 | }
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| 290 | else {
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| 291 | cc = new t_corr();
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| 292 | _corr[prn] = cc;
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| 293 | }
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[2207] | 294 |
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[2911] | 295 | cc->readLine(line);
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[3751] | 296 | _corr_tt = cc->tClk;
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[2035] | 297 | }
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[2317] | 298 | else if ( messageType == BTYPE_GPS ) {
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[2274] | 299 |
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| 300 | t_bias* bb = 0;
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| 301 | if (_bias.contains(prn)) {
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[2341] | 302 | bb = _bias.value(prn);
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[2274] | 303 | }
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| 304 | else {
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| 305 | bb = new t_bias();
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| 306 | _bias[prn] = bb;
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| 307 | }
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| 308 |
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| 309 | bb->tt.set(GPSweek, GPSweeks);
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| 310 |
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| 311 | int numBiases;
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| 312 | in >> numBiases;
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| 313 | for (int ii = 0; ii < numBiases; ++ii) {
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| 314 | int bType;
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| 315 | double bValue;
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| 316 | in >> bType >> bValue;
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[2426] | 317 | if (bType == CODETYPEGPS_L1_Z) {
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[2429] | 318 | bb->p1 = bValue;
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[2274] | 319 | }
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[2426] | 320 | else if (bType == CODETYPEGPS_L1_CA) {
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[2429] | 321 | bb->c1 = bValue;
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[2426] | 322 | }
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[2365] | 323 | else if (bType == CODETYPEGPS_L2_Z) {
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[2429] | 324 | bb->p2 = bValue;
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[2274] | 325 | }
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| 326 | }
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| 327 | }
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[2035] | 328 | }
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| 329 | }
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| 330 |
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| 331 | // Satellite Position
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| 332 | ////////////////////////////////////////////////////////////////////////////
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[2123] | 333 | t_irc bncPPPclient::getSatPos(const bncTime& tt, const QString& prn,
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[2357] | 334 | ColumnVector& xc, ColumnVector& vv) {
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[2035] | 335 |
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[2576] | 336 | const double MAXAGE = 120.0;
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[2041] | 337 |
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[2035] | 338 | if (_eph.contains(prn)) {
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[2040] | 339 |
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[3635] | 340 | if (_opt->pppMode) {
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[2068] | 341 | if (_corr.contains(prn)) {
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| 342 | t_corr* cc = _corr.value(prn);
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[3751] | 343 | if (cc->ready() && tt - cc->tClk < MAXAGE) {
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[2576] | 344 | t_eph* eLast = _eph.value(prn)->last;
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| 345 | t_eph* ePrev = _eph.value(prn)->prev;
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| 346 | if (eLast && eLast->IOD() == cc->iod) {
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| 347 | eLast->position(tt.gpsw(), tt.gpssec(), xc.data(), vv.data());
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[3521] | 348 | return applyCorr(tt, cc, xc, vv);
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[2576] | 349 | }
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| 350 | else if (ePrev && ePrev->IOD() == cc->iod) {
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| 351 | ePrev->position(tt.gpsw(), tt.gpssec(), xc.data(), vv.data());
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[3521] | 352 | return applyCorr(tt, cc, xc, vv);
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[2576] | 353 | }
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| 354 | }
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[2041] | 355 | }
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[2040] | 356 | }
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[2576] | 357 |
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| 358 | else {
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| 359 | t_eph* ee = _eph.value(prn)->last;
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| 360 | ee->position(tt.gpsw(), tt.gpssec(), xc.data(), vv.data());
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| 361 | return success;
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| 362 | }
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[2035] | 363 | }
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| 364 |
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| 365 | return failure;
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| 366 | }
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| 367 |
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| 368 | //
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| 369 | ////////////////////////////////////////////////////////////////////////////
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[3319] | 370 | t_irc bncPPPclient::applyCorr(const bncTime& tt, const t_corr* cc,
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[3521] | 371 | ColumnVector& xc, ColumnVector& vv) {
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[2041] | 372 |
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[3751] | 373 | double dtRao = tt - cc->tRao;
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| 374 | ColumnVector raoHlp = cc->rao + cc->dotRao * dtRao
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[4148] | 375 | + 0.5 * cc->dotDotRao * dtRao * dtRao;
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[2296] | 376 |
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[3319] | 377 | if (raoHlp.norm_Frobenius() > 20.0) {
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| 378 | return failure;
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| 379 | }
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| 380 |
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[3521] | 381 | ColumnVector dx(3);
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| 382 | RSW_to_XYZ(xc.Rows(1,3), vv, raoHlp, dx);
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| 383 | xc[0] -= dx[0];
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| 384 | xc[1] -= dx[1];
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| 385 | xc[2] -= dx[2];
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[3751] | 386 |
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| 387 | double dtClk = tt - cc->tClk;
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| 388 |
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| 389 | xc[3] += cc->dClk + cc->dotDClk * dtClk + cc->dotDotDClk * dtClk * dtClk
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[3521] | 390 | + cc->hrClk;
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[2296] | 391 |
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[3319] | 392 | return success;
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[2041] | 393 | }
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| 394 |
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[2049] | 395 | // Correct Time of Transmission
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| 396 | ////////////////////////////////////////////////////////////////////////////
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[2240] | 397 | t_irc bncPPPclient::cmpToT(t_satData* satData) {
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[2049] | 398 |
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[2051] | 399 | double prange = satData->P3;
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[2049] | 400 | if (prange == 0.0) {
|
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| 401 | return failure;
|
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| 402 | }
|
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| 403 |
|
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| 404 | double clkSat = 0.0;
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| 405 | for (int ii = 1; ii <= 10; ii++) {
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| 406 |
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[2808] | 407 | bncTime ToT = satData->tt - prange / t_CST::c - clkSat;
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[2049] | 408 |
|
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| 409 | ColumnVector xc(4);
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| 410 | ColumnVector vv(3);
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[2357] | 411 | if (getSatPos(ToT, satData->prn, xc, vv) != success) {
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[2049] | 412 | return failure;
|
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| 413 | }
|
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| 414 |
|
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| 415 | double clkSatOld = clkSat;
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[2050] | 416 | clkSat = xc(4);
|
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[2049] | 417 |
|
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| 418 | if ( fabs(clkSat-clkSatOld) * t_CST::c < 1.e-4 ) {
|
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| 419 | satData->xx = xc.Rows(1,3);
|
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| 420 | satData->vv = vv;
|
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[2050] | 421 | satData->clk = clkSat * t_CST::c;
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[2049] | 422 | return success;
|
---|
| 423 | }
|
---|
| 424 | }
|
---|
| 425 |
|
---|
| 426 | return failure;
|
---|
| 427 | }
|
---|
| 428 |
|
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[2041] | 429 | //
|
---|
| 430 | ////////////////////////////////////////////////////////////////////////////
|
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[2808] | 431 | void bncPPPclient::processFrontEpoch() {
|
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[2035] | 432 |
|
---|
[4149] | 433 | #ifdef BNC_DEBUG
|
---|
| 434 | QString msg = "List of Corrections\n";
|
---|
| 435 | QMapIterator<QString, t_corr*> itC(_corr);
|
---|
| 436 | while (itC.hasNext()) {
|
---|
| 437 | itC.next();
|
---|
| 438 | QString src = itC.key();
|
---|
| 439 | const t_corr* corr = itC.value();
|
---|
| 440 | msg += QString("%1 %2 %3 %4\n")
|
---|
| 441 | .arg(corr->prn)
|
---|
| 442 | .arg(corr->iod)
|
---|
| 443 | .arg(QString(corr->tClk.datestr().c_str()) + "_" + QString(corr->tClk.timestr().c_str()))
|
---|
| 444 | .arg(QString(corr->tRao.datestr().c_str()) + "_" + QString(corr->tRao.timestr().c_str()));
|
---|
| 445 | }
|
---|
| 446 |
|
---|
| 447 | msg += "List of Ephemeris\n";
|
---|
| 448 | QMapIterator<QString, t_ephPair*> itE(_eph);
|
---|
| 449 | while (itE.hasNext()) {
|
---|
| 450 | itE.next();
|
---|
| 451 | QString prn = itE.key();
|
---|
| 452 | const t_ephPair* ephPair = itE.value();
|
---|
| 453 | if (ephPair->prev) {
|
---|
| 454 | msg += QString("%1 %2 %3 %4 %5\n")
|
---|
| 455 | .arg(prn)
|
---|
| 456 | .arg(ephPair->last->IOD())
|
---|
| 457 | .arg(QString(ephPair->last->TOC().datestr().c_str()) + "_" +
|
---|
| 458 | QString(ephPair->last->TOC().timestr().c_str()))
|
---|
| 459 | .arg(ephPair->prev->IOD())
|
---|
| 460 | .arg(QString(ephPair->prev->TOC().datestr().c_str()) + "_" +
|
---|
| 461 | QString(ephPair->prev->TOC().timestr().c_str()));
|
---|
| 462 | }
|
---|
| 463 | else {
|
---|
| 464 | msg += QString("%1 %2 %3\n")
|
---|
| 465 | .arg(prn)
|
---|
| 466 | .arg(ephPair->last->IOD())
|
---|
| 467 | .arg(QString(ephPair->last->TOC().datestr().c_str()) + "_" +
|
---|
| 468 | QString(ephPair->last->TOC().timestr().c_str()));
|
---|
| 469 | }
|
---|
| 470 | }
|
---|
| 471 |
|
---|
| 472 | emit newMessage(msg.toAscii(), false);
|
---|
| 473 | #endif // BNC_DEBUG
|
---|
| 474 |
|
---|
[2053] | 475 | // Data Pre-Processing
|
---|
| 476 | // -------------------
|
---|
[3408] | 477 | QMutableMapIterator<QString, t_satData*> it(_epoData.front()->satData);
|
---|
| 478 | while (it.hasNext()) {
|
---|
| 479 | it.next();
|
---|
| 480 | QString prn = it.key();
|
---|
| 481 | t_satData* satData = it.value();
|
---|
[2049] | 482 |
|
---|
[2240] | 483 | if (cmpToT(satData) != success) {
|
---|
[2049] | 484 | delete satData;
|
---|
[3408] | 485 | it.remove();
|
---|
[2049] | 486 | continue;
|
---|
| 487 | }
|
---|
[2053] | 488 | }
|
---|
[2035] | 489 |
|
---|
[2060] | 490 | // Filter Solution
|
---|
| 491 | // ---------------
|
---|
[2808] | 492 | if (_model->update(_epoData.front()) == success) {
|
---|
[2145] | 493 | emit newPosition(_model->time(), _model->x(), _model->y(), _model->z());
|
---|
[2060] | 494 | }
|
---|
[2035] | 495 | }
|
---|
[2808] | 496 |
|
---|
| 497 | //
|
---|
| 498 | ////////////////////////////////////////////////////////////////////////////
|
---|
| 499 | void bncPPPclient::processEpochs() {
|
---|
[2809] | 500 |
|
---|
[2810] | 501 | // Make sure the buffer does not grow beyond any limit
|
---|
| 502 | // ---------------------------------------------------
|
---|
| 503 | const unsigned MAX_EPODATA_SIZE = 120;
|
---|
| 504 | if (_epoData.size() > MAX_EPODATA_SIZE) {
|
---|
| 505 | delete _epoData.front();
|
---|
| 506 | _epoData.pop();
|
---|
| 507 | }
|
---|
| 508 |
|
---|
| 509 | // Loop over all unprocessed epochs
|
---|
| 510 | // --------------------------------
|
---|
[2809] | 511 | while (!_epoData.empty()) {
|
---|
[2810] | 512 |
|
---|
[2809] | 513 | t_epoData* frontEpoData = _epoData.front();
|
---|
| 514 |
|
---|
| 515 | // No corrections yet, skip the epoch
|
---|
| 516 | // ----------------------------------
|
---|
[3635] | 517 | if (_opt->corrSync != 0.0 && !_corr_tt.valid()) {
|
---|
[2810] | 518 | return;
|
---|
[2809] | 519 | }
|
---|
| 520 |
|
---|
[2810] | 521 | // Process the front epoch
|
---|
| 522 | // -----------------------
|
---|
[3635] | 523 | if (_opt->corrSync == 0 || frontEpoData->tt - _corr_tt < _opt->corrSync) {
|
---|
[2809] | 524 | processFrontEpoch();
|
---|
| 525 | delete _epoData.front();
|
---|
| 526 | _epoData.pop();
|
---|
| 527 | }
|
---|
| 528 | else {
|
---|
| 529 | return;
|
---|
| 530 | }
|
---|
| 531 | }
|
---|
[2808] | 532 | }
|
---|