| 1 | /* -------------------------------------------------------------------------
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| 2 | * BKG NTRIP Client
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| 3 | * -------------------------------------------------------------------------
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| 4 | *
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| 5 | * Class: t_pppSatObs
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| 6 | *
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| 7 | * Purpose: Satellite observations
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| 8 | *
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| 9 | * Author: L. Mervart
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| 10 | *
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| 11 | * Created: 29-Jul-2014
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| 12 | *
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| 13 | * Changes:
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| 14 | *
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| 15 | * -----------------------------------------------------------------------*/
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| 16 |
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| 17 |
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| 18 | #include <iostream>
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| 19 | #include <iomanip>
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| 20 | #include <cmath>
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| 21 | #include <algorithm>
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| 22 | #include <set>
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| 23 | #include <newmatio.h>
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| 24 |
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| 25 | #include "pppSatObs.h"
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| 26 | #include "bncconst.h"
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| 27 | #include "pppEphPool.h"
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| 28 | #include "pppStation.h"
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| 29 | #include "bncutils.h"
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| 30 | #include "bncantex.h"
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| 31 | #include "pppObsPool.h"
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| 32 | #include "pppClient.h"
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| 33 |
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| 34 | using namespace BNC_PPP;
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| 35 | using namespace std;
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| 36 |
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| 37 |
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| 38 | // Constructor
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| 39 | ////////////////////////////////////////////////////////////////////////////
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| 40 | t_pppSatObs::t_pppSatObs(const t_satObs& pppSatObs) {
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| 41 | _prn = pppSatObs._prn;
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| 42 | _time = pppSatObs._time;
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| 43 | _outlier = false;
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| 44 | _valid = true;
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| 45 | _reference = false;
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| 46 | _stecSat = 0.0;
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| 47 | for (unsigned ii = 0; ii < t_frequency::max; ii++) {
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| 48 | _obs[ii] = 0;
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| 49 | }
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| 50 | prepareObs(pppSatObs);
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| 51 | }
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| 52 |
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| 53 | // Destructor
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| 54 | ////////////////////////////////////////////////////////////////////////////
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| 55 | t_pppSatObs::~t_pppSatObs() {
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| 56 | for (unsigned iFreq = 1; iFreq < t_frequency::max; iFreq++) {
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| 57 | delete _obs[iFreq];
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| 58 | }
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| 59 | }
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| 60 |
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| 61 | //
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| 62 | ////////////////////////////////////////////////////////////////////////////
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| 63 | bool t_pppSatObs::isBetter(const t_frqObs* aa, t_frqObs* bb, const string& trkModes) const {
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| 64 |
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| 65 | if (!trkModes.empty()) {
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| 66 | size_t posA = trkModes.find(aa->trkChar());
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| 67 | size_t posB = trkModes.find(bb->trkChar());
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| 68 | if (posA != posB) {
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| 69 | if (posA == string::npos) {
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| 70 | return false;
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| 71 | }
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| 72 | else if (posB == string::npos) {
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| 73 | return true;
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| 74 | }
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| 75 | else {
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| 76 | return posA < posB;
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| 77 | }
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| 78 | }
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| 79 | }
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| 80 |
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| 81 | unsigned numValA = 0;
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| 82 | if (aa->_codeValid) numValA += 1;
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| 83 | if (aa->_phaseValid) numValA += 1;
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| 84 |
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| 85 | unsigned numValB = 0;
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| 86 | if (bb->_codeValid) numValB += 1;
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| 87 | if (bb->_phaseValid) numValB += 1;
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| 88 |
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| 89 | if (numValA != numValB) {
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| 90 | return numValA > numValB;
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| 91 | }
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| 92 |
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| 93 | return false;
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| 94 | }
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| 95 |
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| 96 | //
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| 97 | ////////////////////////////////////////////////////////////////////////////
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| 98 | void t_pppSatObs::prepareObs(const t_satObs& satObs) {
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| 99 |
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| 100 | _model.reset();
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| 101 |
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| 102 | const t_pppOptions::SysTrkModes* sysTrkModes = OPT->sysTrkModes(_prn.system());
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| 103 | using FrqTrkModes = t_pppOptions::SysTrkModes::FrqTrkModes;
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| 104 |
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| 105 | for (const t_frqObs* obs : satObs._obs) {
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| 106 | if ( (obs->_codeValid || obs->_phaseValid)) {
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| 107 | t_frequency::type frq = t_frequency::toFreq(_prn.system(), obs->frqChar());
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| 108 | if (frq == t_frequency::dummy) {
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| 109 | continue;
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| 110 | }
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| 111 | string trkModes;
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| 112 | if (sysTrkModes) {
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| 113 | const vector<FrqTrkModes>& frqTrkModes = sysTrkModes->_frqTrkModes;
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| 114 | auto it = find_if(frqTrkModes.begin(), frqTrkModes.end(),
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| 115 | [frq](const FrqTrkModes& mm){return mm._frq == frq;});
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| 116 | if (it != frqTrkModes.end()) {
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| 117 | trkModes = it->_trkModes;
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| 118 | }
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| 119 | }
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| 120 | if (_obs[frq] == 0 || isBetter(obs, _obs[frq], trkModes)) {
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| 121 | delete _obs[frq];
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| 122 | _obs[frq] = new t_frqObs(*obs);
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| 123 | }
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| 124 | }
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| 125 | }
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| 126 |
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| 127 | // Check whether all required frequencies available
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| 128 | // ------------------------------------------------
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| 129 | const std::vector<t_lc>& LCs = OPT->LCs(_prn.system());
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| 130 | for (unsigned ii = 0; ii < LCs.size(); ii++) {
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| 131 | t_lc LC = LCs[ii];
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| 132 | if (LC._type == t_lc::GIM) {
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| 133 | continue;
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| 134 | }
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| 135 | if (LC._frq1 != t_frequency::G5 && !isValid(LC)) {
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| 136 | _valid = false;
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| 137 | return;
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| 138 | }
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| 139 | }
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| 140 |
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| 141 | // Find GLONASS Channel Number
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| 142 | // ---------------------------
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| 143 | if (_prn.system() == 'R') {
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| 144 | _channel = PPP_CLIENT->ephPool()->getChannel(_prn);
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| 145 | }
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| 146 | else {
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| 147 | _channel = 0;
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| 148 | }
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| 149 |
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| 150 | // Compute Satellite Coordinates at Time of Transmission
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| 151 | // -----------------------------------------------------
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| 152 | _xcSat.ReSize(6); _xcSat = 0.0;
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| 153 | _vvSat.ReSize(3); _vvSat = 0.0;
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| 154 | bool totOK = false;
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| 155 | ColumnVector satPosOld(6); satPosOld = 0.0;
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| 156 |
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| 157 | _valid = false;
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| 158 | t_frequency::type frq1 = t_frequency::dummy;
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| 159 | t_frequency::type frq2 = t_frequency::dummy;
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| 160 | OPT->defaultFrqs(_prn.system(), frq1, frq2);
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| 161 | if (frq1 != t_frequency::dummy) {
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| 162 | t_lc lc1(t_lc::code, frq1);
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| 163 | if (isValid(lc1)) {
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| 164 | _valid = true;
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| 165 | _rangeLC = lc1;
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| 166 | }
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| 167 | if (frq2 != t_frequency::dummy) {
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| 168 | t_lc lcIF(t_lc::codeIF, frq1, frq2);
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| 169 | if (isValid(lcIF)) {
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| 170 | _valid = true;
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| 171 | _rangeLC = lcIF;
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| 172 | }
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| 173 | }
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| 174 | }
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| 175 | if (!_valid) {
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| 176 | return;
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| 177 | }
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| 178 |
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| 179 | double prange = obsValue(_rangeLC);
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| 180 | for (int ii = 1; ii <= 10; ii++) {
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| 181 | bncTime ToT = _time - prange / t_CST::c - _xcSat[3];
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| 182 | if (PPP_CLIENT->ephPool()->getCrd(_prn, ToT, _xcSat, _vvSat) != success) {
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| 183 | _valid = false;
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| 184 | return;
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| 185 | }
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| 186 | ColumnVector dx = _xcSat - satPosOld;
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| 187 | dx[3] *= t_CST::c;
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| 188 | if (dx.NormFrobenius() < 1.e-4) {
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| 189 | totOK = true;
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| 190 | break;
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| 191 | }
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| 192 | satPosOld = _xcSat;
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| 193 | }
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| 194 | if (totOK) {
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| 195 | _signalPropagationTime = prange / t_CST::c - _xcSat[3];
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| 196 | _model._satClkM = _xcSat[3] * t_CST::c;
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| 197 | }
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| 198 | else {
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| 199 | _valid = false;
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| 200 | }
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| 201 | }
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| 202 |
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| 203 | //
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| 204 | ////////////////////////////////////////////////////////////////////////////
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| 205 | void t_pppSatObs::lcCoeff(t_lc LC,
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| 206 | map<t_frequency::type, double>& codeCoeff,
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| 207 | map<t_frequency::type, double>& phaseCoeff,
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| 208 | map<t_frequency::type, double>& ionoCoeff) const {
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| 209 |
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| 210 | codeCoeff.clear();
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| 211 | phaseCoeff.clear();
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| 212 | ionoCoeff.clear();
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| 213 |
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| 214 | double f1 = t_CST::freq(LC._frq1, _channel);
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| 215 | double f2 = t_CST::freq(LC._frq2, _channel);
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| 216 | double f1GPS = t_CST::freq(t_frequency::G1, 0);
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| 217 |
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| 218 | switch (LC._type) {
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| 219 | case t_lc::phase:
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| 220 | phaseCoeff[LC._frq1] = 1.0;
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| 221 | ionoCoeff [LC._frq1] = -1.0 * pow(f1GPS, 2) / pow(f1, 2);
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| 222 | return;
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| 223 | case t_lc::code:
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| 224 | codeCoeff[LC._frq1] = 1.0;
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| 225 | ionoCoeff[LC._frq1] = pow(f1GPS, 2) / pow(f1, 2);
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| 226 | return;
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| 227 | case t_lc::phaseIF:
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| 228 | phaseCoeff[LC._frq1] = f1 * f1 / (f1 * f1 - f2 * f2);
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| 229 | phaseCoeff[LC._frq2] = -f2 * f2 / (f1 * f1 - f2 * f2);
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| 230 | return;
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| 231 | case t_lc::codeIF:
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| 232 | codeCoeff[LC._frq1] = f1 * f1 / (f1 * f1 - f2 * f2);
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| 233 | codeCoeff[LC._frq2] = -f2 * f2 / (f1 * f1 - f2 * f2);
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| 234 | return;
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| 235 | case t_lc::MW:
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| 236 | phaseCoeff[LC._frq1] = f1 / (f1 - f2);
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| 237 | phaseCoeff[LC._frq2] = -f2 / (f1 - f2);
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| 238 | codeCoeff [LC._frq1] = -f1 / (f1 + f2);
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| 239 | codeCoeff [LC._frq2] = -f2 / (f1 + f2);
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| 240 | return;
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| 241 | case t_lc::CL:
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| 242 | phaseCoeff[LC._frq1] = 0.5;
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| 243 | codeCoeff [LC._frq1] = 0.5;
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| 244 | return;
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| 245 | case t_lc::GIM:
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| 246 | case t_lc::dummy:
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| 247 | case t_lc::maxLc:
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| 248 | return;
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| 249 | }
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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 | bool t_pppSatObs::isValid(t_lc LC) const {
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| 255 | bool valid = true;
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| 256 | obsValue(LC, &valid);
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| 257 |
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| 258 | return valid;
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| 259 | }
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| 260 | //
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| 261 | ////////////////////////////////////////////////////////////////////////////
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| 262 | double t_pppSatObs::obsValue(t_lc LC, bool* valid) const {
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| 263 |
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| 264 | double retVal = 0.0;
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| 265 | if (valid) *valid = true;
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| 266 |
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| 267 | // Pseudo observations
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| 268 | if (LC._type == t_lc::GIM) {
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| 269 | if (_stecSat == 0.0) {
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| 270 | if (valid) *valid = false;
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| 271 | return 0.0;
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| 272 | }
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| 273 | else {
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| 274 | return _stecSat;
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| 275 | }
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| 276 | }
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| 277 |
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| 278 | map<t_frequency::type, double> codeCoeff;
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| 279 | map<t_frequency::type, double> phaseCoeff;
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| 280 | map<t_frequency::type, double> ionoCoeff;
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| 281 | lcCoeff(LC, codeCoeff, phaseCoeff, ionoCoeff);
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| 282 |
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| 283 | map<t_frequency::type, double>::const_iterator it;
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| 284 |
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| 285 | // Code observations
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| 286 | for (it = codeCoeff.begin(); it != codeCoeff.end(); it++) {
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| 287 | t_frequency::type tFreq = it->first;
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| 288 | if (_obs[tFreq] == 0) {
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| 289 | if (valid) *valid = false;
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| 290 | return 0.0;
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| 291 | }
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| 292 | else {
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| 293 | retVal += it->second * _obs[tFreq]->_code;
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| 294 | }
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| 295 | }
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| 296 | // Phase observations
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| 297 | for (it = phaseCoeff.begin(); it != phaseCoeff.end(); it++) {
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| 298 | t_frequency::type tFreq = it->first;
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| 299 | if (_obs[tFreq] == 0) {
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| 300 | if (valid) *valid = false;
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| 301 | return 0.0;
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| 302 | }
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| 303 | else {
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| 304 | retVal += it->second * _obs[tFreq]->_phase * t_CST::lambda(tFreq, _channel);
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| 305 | }
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| 306 | }
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| 307 | return retVal;
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| 308 | }
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| 309 |
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| 310 | //
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| 311 | ////////////////////////////////////////////////////////////////////////////
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| 312 | double t_pppSatObs::lambda(t_lc LC) const {
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| 313 |
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| 314 | double f1 = t_CST::freq(LC._frq1, _channel);
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| 315 | double f2 = t_CST::freq(LC._frq2, _channel);
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| 316 |
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| 317 | if (LC._type == t_lc::phase) {
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| 318 | return t_CST::c / f1;
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| 319 | }
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| 320 | else if (LC._type == t_lc::phaseIF) {
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| 321 | return t_CST::c / (f1 + f2);
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| 322 | }
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| 323 | else if (LC._type == t_lc::MW) {
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| 324 | return t_CST::c / (f1 - f2);
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| 325 | }
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| 326 | else if (LC._type == t_lc::CL) {
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| 327 | return t_CST::c / f1 / 2.0;
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| 328 | }
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| 329 |
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| 330 | return 0.0;
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| 331 | }
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| 332 |
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| 333 | //
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| 334 | ////////////////////////////////////////////////////////////////////////////
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| 335 | double t_pppSatObs::sigma(t_lc LC) const {
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| 336 |
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| 337 | double retVal = 0.0;
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| 338 | map<t_frequency::type, double> codeCoeff;
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| 339 | map<t_frequency::type, double> phaseCoeff;
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| 340 | map<t_frequency::type, double> ionoCoeff;
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| 341 | lcCoeff(LC, codeCoeff, phaseCoeff, ionoCoeff);
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| 342 |
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| 343 | if (LC._type == t_lc::GIM) {
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| 344 | retVal = OPT->_sigmaGIM * OPT->_sigmaGIM;
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| 345 | }
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| 346 |
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| 347 | map<t_frequency::type, double>::const_iterator it;
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| 348 | for (it = codeCoeff.begin(); it != codeCoeff.end(); it++) {
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| 349 | retVal += it->second * it->second * OPT->_sigmaC1 * OPT->_sigmaC1;
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| 350 | }
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| 351 |
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| 352 | for (it = phaseCoeff.begin(); it != phaseCoeff.end(); it++) {
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| 353 | retVal += it->second * it->second * OPT->_sigmaL1 * OPT->_sigmaL1;
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| 354 | }
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| 355 |
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| 356 | retVal = sqrt(retVal);
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| 357 |
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| 358 | // De-Weight R
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| 359 | // -----------
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| 360 | if (_prn.system() == 'R'&& LC.includesCode()) {
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| 361 | retVal *= 5.0;
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| 362 | }
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| 363 |
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| 364 | // Elevation-Dependent Weighting
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| 365 | // -----------------------------
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| 366 | double cEle = 1.0;
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| 367 | if ( (OPT->_eleWgtCode && LC.includesCode()) ||
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| 368 | (OPT->_eleWgtPhase && LC.includesPhase()) ) {
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| 369 | double eleD = eleSat()*180.0/M_PI;
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| 370 | double hlp = fabs(90.0 - eleD);
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| 371 | cEle = (1.0 + hlp*hlp*hlp*0.000004);
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| 372 | }
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| 373 |
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| 374 | return cEle * retVal;
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| 375 | }
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| 376 |
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| 377 | //
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| 378 | ////////////////////////////////////////////////////////////////////////////
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| 379 | double t_pppSatObs::maxRes(t_lc LC) const {
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| 380 | double retVal = 0.0;
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| 381 |
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| 382 | map<t_frequency::type, double> codeCoeff;
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| 383 | map<t_frequency::type, double> phaseCoeff;
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| 384 | map<t_frequency::type, double> ionoCoeff;
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| 385 | lcCoeff(LC, codeCoeff, phaseCoeff, ionoCoeff);
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| 386 |
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| 387 | map<t_frequency::type, double>::const_iterator it;
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| 388 | for (it = codeCoeff.begin(); it != codeCoeff.end(); it++) {
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| 389 | retVal += it->second * it->second * OPT->_maxResC1 * OPT->_maxResC1;
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| 390 | }
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| 391 | for (it = phaseCoeff.begin(); it != phaseCoeff.end(); it++) {
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| 392 | retVal += it->second * it->second * OPT->_maxResL1 * OPT->_maxResL1;
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| 393 | }
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| 394 | if (LC._type == t_lc::GIM) {
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| 395 | retVal = OPT->_maxResGIM * OPT->_maxResGIM + OPT->_maxResGIM * OPT->_maxResGIM;
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| 396 | }
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| 397 |
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| 398 | retVal = sqrt(retVal);
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| 399 |
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| 400 | return retVal;
|
|---|
| 401 | }
|
|---|
| 402 |
|
|---|
| 403 |
|
|---|
| 404 | //
|
|---|
| 405 | ////////////////////////////////////////////////////////////////////////////
|
|---|
| 406 | t_irc t_pppSatObs::cmpModel(const t_pppStation* station) {
|
|---|
| 407 |
|
|---|
| 408 | // Reset all model values
|
|---|
| 409 | // ----------------------
|
|---|
| 410 | _model.reset();
|
|---|
| 411 |
|
|---|
| 412 | // Topocentric Satellite Position
|
|---|
| 413 | // ------------------------------
|
|---|
| 414 | ColumnVector rSat = _xcSat.Rows(1,3);
|
|---|
| 415 | ColumnVector rRec = station->xyzApr();
|
|---|
| 416 | ColumnVector rhoV = rSat - rRec;
|
|---|
| 417 | _model._rho = rhoV.NormFrobenius();
|
|---|
| 418 |
|
|---|
| 419 | ColumnVector vSat = _vvSat;
|
|---|
| 420 |
|
|---|
| 421 | ColumnVector neu(3);
|
|---|
| 422 | xyz2neu(station->ellApr().data(), rhoV.data(), neu.data());
|
|---|
| 423 |
|
|---|
| 424 | _model._eleSat = acos(sqrt(neu[0]*neu[0] + neu[1]*neu[1]) / _model._rho);
|
|---|
| 425 | if (neu[2] < 0.0) {
|
|---|
| 426 | _model._eleSat *= -1.0;
|
|---|
| 427 | }
|
|---|
| 428 | _model._azSat = atan2(neu[1], neu[0]);
|
|---|
| 429 |
|
|---|
| 430 | // Sun unit vector
|
|---|
| 431 | ColumnVector xSun = t_astro::Sun(_time.mjddec());
|
|---|
| 432 | xSun /= xSun.norm_Frobenius();
|
|---|
| 433 |
|
|---|
| 434 | // Satellite unit vectors sz, sy, sx
|
|---|
| 435 | ColumnVector sz = -rSat / rSat.norm_Frobenius();
|
|---|
| 436 | ColumnVector sy = crossproduct(sz, xSun);
|
|---|
| 437 | ColumnVector sx = crossproduct(sy, sz);
|
|---|
| 438 |
|
|---|
| 439 | sx /= sx.norm_Frobenius();
|
|---|
| 440 | sy /= sy.norm_Frobenius();
|
|---|
| 441 |
|
|---|
| 442 | // LOS unit vector satellite --> receiver
|
|---|
| 443 | ColumnVector rho = rRec - rSat;
|
|---|
| 444 | rho /= rho.norm_Frobenius();
|
|---|
| 445 |
|
|---|
| 446 | // LOS vector in satellite frame
|
|---|
| 447 | ColumnVector u(3);
|
|---|
| 448 | u(1) = dotproduct(sx, rho);
|
|---|
| 449 | u(2) = dotproduct(sy, rho);
|
|---|
| 450 | u(3) = dotproduct(sz, rho);
|
|---|
| 451 |
|
|---|
| 452 | // Azimuth and elevation in satellite antenna frame
|
|---|
| 453 | _model._elTx = atan2(u(3),sqrt(pow(u(2),2)+pow(u(1),2)));
|
|---|
| 454 | _model._azTx = atan2(u(2),u(1));
|
|---|
| 455 |
|
|---|
| 456 |
|
|---|
| 457 | // Satellite Clocks
|
|---|
| 458 | // ----------------
|
|---|
| 459 | _model._satClkM = _xcSat[3] * t_CST::c; // satellite system specific
|
|---|
| 460 |
|
|---|
| 461 | // Receiver Clocks
|
|---|
| 462 | // ---------------
|
|---|
| 463 | _model._recClkM = station->dClk() * t_CST::c;
|
|---|
| 464 |
|
|---|
| 465 | // Sagnac Effect (correction due to Earth rotation)
|
|---|
| 466 | // ------------------------------------------------
|
|---|
| 467 | ColumnVector Omega(3);
|
|---|
| 468 | Omega[0] = 0.0;
|
|---|
| 469 | Omega[1] = 0.0;
|
|---|
| 470 | Omega[2] = t_CST::omega / t_CST::c;
|
|---|
| 471 | _model._sagnac = DotProduct(Omega, crossproduct(rSat, rRec));
|
|---|
| 472 |
|
|---|
| 473 | // Antenna Eccentricity
|
|---|
| 474 | // --------------------
|
|---|
| 475 | _model._antEcc = -DotProduct(station->xyzEcc(), rhoV) / _model._rho;
|
|---|
| 476 |
|
|---|
| 477 | // Antenna Phase Center Offsets and Variations
|
|---|
| 478 | // -------------------------------------------
|
|---|
| 479 | if (PPP_CLIENT->antex()) {
|
|---|
| 480 | for (unsigned ii = 0; ii < t_frequency::max; ii++) {
|
|---|
| 481 | t_frequency::type frqType = static_cast<t_frequency::type>(ii);
|
|---|
| 482 | string frqStr = t_frequency::toString(frqType);
|
|---|
| 483 | if (frqStr[0] != _prn.system()) {continue;}
|
|---|
| 484 | bool found;
|
|---|
| 485 | QString prn(_prn.toString().c_str());
|
|---|
| 486 | _model._antPCO[ii] = PPP_CLIENT->antex()->rcvCorr(station->antName(), frqType, _model._eleSat, _model._azSat, found);
|
|---|
| 487 | _model._antPCO[ii] += PPP_CLIENT->antex()->satCorr(prn, frqType, _model._elTx, _model._azTx, found);
|
|---|
| 488 | if (OPT->_isAPC && found) {
|
|---|
| 489 | // the PCOs as given in the satellite antenna correction for all frequencies
|
|---|
| 490 | // have to be reduced by the PCO of the respective reference frequency
|
|---|
| 491 | if (_prn.system() == 'G') {
|
|---|
| 492 | _model._antPCO[ii] -= PPP_CLIENT->antex()->satCorr(prn, t_frequency::G1, _model._elTx, _model._azTx, found);
|
|---|
| 493 | }
|
|---|
| 494 | else if (_prn.system() == 'R') {
|
|---|
| 495 | _model._antPCO[ii] -= PPP_CLIENT->antex()->satCorr(prn, t_frequency::R1, _model._elTx, _model._azTx, found);
|
|---|
| 496 | }
|
|---|
| 497 | else if (_prn.system() == 'E') {
|
|---|
| 498 | _model._antPCO[ii] -= PPP_CLIENT->antex()->satCorr(prn, t_frequency::E1, _model._elTx, _model._azTx, found);
|
|---|
| 499 | }
|
|---|
| 500 | else if (_prn.system() == 'C') {
|
|---|
| 501 | _model._antPCO[ii] -= PPP_CLIENT->antex()->satCorr(prn, t_frequency::C2, _model._elTx, _model._azTx, found);
|
|---|
| 502 | }
|
|---|
| 503 | }
|
|---|
| 504 | }
|
|---|
| 505 | }
|
|---|
| 506 |
|
|---|
| 507 | // Tropospheric Delay
|
|---|
| 508 | // ------------------
|
|---|
| 509 | _model._tropo = t_tropo::delay_saast(rRec, _model._eleSat);
|
|---|
| 510 |
|
|---|
| 511 | // Code Biases
|
|---|
| 512 | // -----------
|
|---|
| 513 | const t_satCodeBias* satCodeBias = PPP_CLIENT->obsPool()->satCodeBias(_prn);
|
|---|
| 514 | if (satCodeBias) {
|
|---|
| 515 | for (unsigned ii = 0; ii < satCodeBias->_bias.size(); ii++) {
|
|---|
| 516 | const t_frqCodeBias& bias = satCodeBias->_bias[ii];
|
|---|
| 517 | for (unsigned iFreq = 1; iFreq < t_frequency::max; iFreq++) {
|
|---|
| 518 | string frqStr = t_frequency::toString(t_frequency::type(iFreq));
|
|---|
| 519 | if (frqStr[0] != _prn.system()) {
|
|---|
| 520 | continue;
|
|---|
| 521 | }
|
|---|
| 522 | const t_frqObs* obs = _obs[iFreq];
|
|---|
| 523 | if (obs && obs->_rnxType2ch == bias._rnxType2ch) {
|
|---|
| 524 | _model._codeBias[iFreq] = (bias._value != 0.0 ? bias._value : ZEROVALUE);
|
|---|
| 525 | }
|
|---|
| 526 | }
|
|---|
| 527 | }
|
|---|
| 528 | }
|
|---|
| 529 |
|
|---|
| 530 | // Phase Biases
|
|---|
| 531 | // -----------
|
|---|
| 532 | double yaw = 0.0;
|
|---|
| 533 | bool useYaw = false;
|
|---|
| 534 | if (OPT->arSystem(_prn.system())) {
|
|---|
| 535 | const t_satPhaseBias* satPhaseBias = PPP_CLIENT->obsPool()->satPhaseBias(_prn);
|
|---|
| 536 | if (satPhaseBias) {
|
|---|
| 537 | if (OPT->_ar._useYaw) {
|
|---|
| 538 | double dt = station->epochTime() - satPhaseBias->_time;
|
|---|
| 539 | if (satPhaseBias->_updateInt) {
|
|---|
| 540 | dt -= (0.5 * ssrUpdateInt[satPhaseBias->_updateInt]);
|
|---|
| 541 | }
|
|---|
| 542 | yaw = satPhaseBias->_yaw + satPhaseBias->_yawRate * dt;
|
|---|
| 543 | useYaw = true;
|
|---|
| 544 | }
|
|---|
| 545 | for (unsigned ii = 0; ii < satPhaseBias->_bias.size(); ii++) {
|
|---|
| 546 | const t_frqPhaseBias& bias = satPhaseBias->_bias[ii];
|
|---|
| 547 | if (bias._fixIndicator) { // if AR, biases without fixIndicator not used
|
|---|
| 548 | for (unsigned iFreq = 1; iFreq < t_frequency::max; iFreq++) {
|
|---|
| 549 | string frqStr = t_frequency::toString(t_frequency::type(iFreq));
|
|---|
| 550 | if (frqStr[0] != _prn.system()) {
|
|---|
| 551 | continue;
|
|---|
| 552 | }
|
|---|
| 553 | t_frqObs* obs = _obs[iFreq];
|
|---|
| 554 | if (obs && obs->_rnxType2ch[0] == bias._rnxType2ch[0]) { // allow different tracking mode
|
|---|
| 555 | _model._phaseBias[iFreq] = (bias._value != 0.0 ? bias._value : ZEROVALUE);
|
|---|
| 556 | obs->_biasJumpCounter = bias._jumpCounter;
|
|---|
| 557 | }
|
|---|
| 558 | }
|
|---|
| 559 | }
|
|---|
| 560 | }
|
|---|
| 561 | }
|
|---|
| 562 | }
|
|---|
| 563 |
|
|---|
| 564 | // Phase Wind-Up
|
|---|
| 565 | // -------------
|
|---|
| 566 | _model._windUp = station->windUp(_time, _prn, rSat, useYaw, yaw, vSat) ;
|
|---|
| 567 |
|
|---|
| 568 | // Relativistic effect due to earth gravity
|
|---|
| 569 | // ----------------------------------------
|
|---|
| 570 | double a = rSat.NormFrobenius() + rRec.NormFrobenius();
|
|---|
| 571 | double b = (rSat - rRec).NormFrobenius();
|
|---|
| 572 | double gm = 3.986004418e14; // m3/s2
|
|---|
| 573 | _model._rel = 2 * gm / t_CST::c / t_CST::c * log((a + b) / (a - b));
|
|---|
| 574 |
|
|---|
| 575 | // Tidal Correction
|
|---|
| 576 | // ----------------
|
|---|
| 577 | _model._tideEarth = -DotProduct(station->tideDsplEarth(), rhoV) / _model._rho;
|
|---|
| 578 | _model._tideOcean = -DotProduct(station->tideDsplOcean(), rhoV) / _model._rho;
|
|---|
| 579 |
|
|---|
| 580 | // Ionospheric Delay
|
|---|
| 581 | // -----------------
|
|---|
| 582 | const t_vTec* vTec = PPP_CLIENT->obsPool()->vTec();
|
|---|
| 583 | bool vTecUsage = true;
|
|---|
| 584 | for (unsigned ii = 0; ii < OPT->LCs(_prn.system()).size(); ii++) {
|
|---|
| 585 | t_lc LC = OPT->LCs(_prn.system())[ii];
|
|---|
| 586 | if (LC._type == t_lc::codeIF || LC._type == t_lc::phaseIF) {
|
|---|
| 587 | vTecUsage = false;
|
|---|
| 588 | }
|
|---|
| 589 | }
|
|---|
| 590 |
|
|---|
| 591 | if (vTecUsage && vTec) {
|
|---|
| 592 | double stec = station->stec(vTec, _signalPropagationTime, rSat);
|
|---|
| 593 | double f1GPS = t_CST::freq(t_frequency::G1, 0);
|
|---|
| 594 | for (unsigned iFreq = 1; iFreq < t_frequency::max; iFreq++) {
|
|---|
| 595 | if (OPT->_pseudoObsIono) {
|
|---|
| 596 | // For scaling the slant ionospheric delays the trick is to be consistent with units!
|
|---|
| 597 | // The conversion of TECU into meters requires the frequency of the signal.
|
|---|
| 598 | // Hence, GPS L1 frequency is used for all systems. The same is true for mu_i in lcCoeff().
|
|---|
| 599 | _model._ionoCodeDelay[iFreq] = 40.3E16 / pow(f1GPS, 2) * stec;
|
|---|
| 600 | }
|
|---|
| 601 | else { // PPP-RTK
|
|---|
| 602 | t_frequency::type frqType = static_cast<t_frequency::type>(iFreq);
|
|---|
| 603 | _model._ionoCodeDelay[iFreq] = 40.3E16 / pow(t_CST::freq(frqType, _channel), 2) * stec;
|
|---|
| 604 | }
|
|---|
| 605 | }
|
|---|
| 606 | }
|
|---|
| 607 |
|
|---|
| 608 | // Set Model Set Flag
|
|---|
| 609 | // ------------------
|
|---|
| 610 | _model._set = true;
|
|---|
| 611 |
|
|---|
| 612 | if (OPT->_logMode == t_pppOptions::all) {
|
|---|
| 613 | printModel();
|
|---|
| 614 | }
|
|---|
| 615 |
|
|---|
| 616 | return success;
|
|---|
| 617 | }
|
|---|
| 618 |
|
|---|
| 619 | //
|
|---|
| 620 | ////////////////////////////////////////////////////////////////////////////
|
|---|
| 621 | void t_pppSatObs::printModel() const {
|
|---|
| 622 |
|
|---|
| 623 | LOG.setf(ios::fixed);
|
|---|
| 624 | LOG << "\nMODEL for Satellite " << _prn.toString() << (isReference() ? " (Reference Satellite)" : "")
|
|---|
| 625 |
|
|---|
| 626 | << "\n======================= " << endl
|
|---|
| 627 | << "PPP "
|
|---|
| 628 | << ((OPT->_pseudoObsIono) ? " with pseudo-observations for STEC" : "") << endl
|
|---|
| 629 | << "RHO : " << setw(12) << setprecision(3) << _model._rho << endl
|
|---|
| 630 | << "ELE : " << setw(12) << setprecision(3) << _model._eleSat * RHO_DEG << endl
|
|---|
| 631 | << "AZI : " << setw(12) << setprecision(3) << _model._azSat * RHO_DEG << endl
|
|---|
| 632 | << "SATCLK : " << setw(12) << setprecision(3) << _model._satClkM << endl
|
|---|
| 633 | << "RECCLK : " << setw(12) << setprecision(3) << _model._recClkM << endl
|
|---|
| 634 | << "SAGNAC : " << setw(12) << setprecision(3) << _model._sagnac << endl
|
|---|
| 635 | << "ANTECC : " << setw(12) << setprecision(3) << _model._antEcc << endl
|
|---|
| 636 | << "TROPO : " << setw(12) << setprecision(3) << _model._tropo << endl
|
|---|
| 637 | << "WINDUP : " << setw(12) << setprecision(3) << _model._windUp << endl
|
|---|
| 638 | << "REL : " << setw(12) << setprecision(3) << _model._rel << endl
|
|---|
| 639 | << "EARTH TIDES : " << setw(12) << setprecision(3) << _model._tideEarth << endl
|
|---|
| 640 | << "OCEAN TIDES : " << setw(12) << setprecision(3) << _model._tideOcean << endl
|
|---|
| 641 | << endl
|
|---|
| 642 | << "FREQUENCY DEPENDENT CORRECTIONS:" << endl
|
|---|
| 643 | << "-------------------------------" << endl;
|
|---|
| 644 | for (unsigned iFreq = 1; iFreq < t_frequency::max; iFreq++) {
|
|---|
| 645 | if (_obs[iFreq]) {
|
|---|
| 646 | string frqStr = t_frequency::toString(t_frequency::type(iFreq));
|
|---|
| 647 | if (_prn.system() == frqStr[0]) {
|
|---|
| 648 | LOG << "PCO : " << frqStr << setw(12) << setprecision(3) << _model._antPCO[iFreq] << endl
|
|---|
| 649 | << "BIAS CODE : " << frqStr << setw(12) << setprecision(3) << _model._codeBias[iFreq] << "\t(" << _obs[iFreq]->trkChar() << ") " << endl
|
|---|
| 650 | << "BIAS PHASE : " << frqStr << setw(12) << setprecision(3) << _model._phaseBias[iFreq] << "\t(" << _obs[iFreq]->trkChar() << ") " << endl
|
|---|
| 651 | << "IONO CODEDELAY: " << frqStr << setw(12) << setprecision(3) << _model._ionoCodeDelay[iFreq]<< endl;
|
|---|
| 652 | }
|
|---|
| 653 | }
|
|---|
| 654 | }
|
|---|
| 655 | }
|
|---|
| 656 |
|
|---|
| 657 | //
|
|---|
| 658 | ////////////////////////////////////////////////////////////////////////////
|
|---|
| 659 | void t_pppSatObs::printObsMinusComputed() const {
|
|---|
| 660 | LOG.setf(ios::fixed);
|
|---|
| 661 | LOG << "\nOBS-COMP for Satellite " << _prn.toString() << (isReference() ? " (Reference Satellite)" : "") << endl
|
|---|
| 662 | << "========================== " << endl;
|
|---|
| 663 | char sys = _prn.system();
|
|---|
| 664 | for (unsigned ii = 0; ii < OPT->LCs(sys).size(); ii++) {
|
|---|
| 665 | t_lc LC = OPT->LCs(sys)[ii];
|
|---|
| 666 | LOG << "OBS-CMP " << setw(4) << LC.toString() << ": " << _prn.toString() << " "
|
|---|
| 667 | << setw(12) << setprecision(3) << obsValue(LC) << " "
|
|---|
| 668 | << setw(12) << setprecision(3) << cmpValue(LC) << " "
|
|---|
| 669 | << setw(12) << setprecision(3) << obsValue(LC) - cmpValue(LC) << endl;
|
|---|
| 670 | }
|
|---|
| 671 | }
|
|---|
| 672 |
|
|---|
| 673 | //
|
|---|
| 674 | ////////////////////////////////////////////////////////////////////////////
|
|---|
| 675 | double t_pppSatObs::cmpValueForBanc(t_lc LC) const {
|
|---|
| 676 | return cmpValue(LC) - _model._rho - _model._sagnac - _model._recClkM;
|
|---|
| 677 | }
|
|---|
| 678 |
|
|---|
| 679 | //
|
|---|
| 680 | ////////////////////////////////////////////////////////////////////////////
|
|---|
| 681 | double t_pppSatObs::cmpValue(t_lc LC) const {
|
|---|
| 682 | double cmpValue;
|
|---|
| 683 |
|
|---|
| 684 | if (!isValid(LC)) {
|
|---|
| 685 | cmpValue = 0.0;
|
|---|
| 686 | }
|
|---|
| 687 | else if (LC._type == t_lc::GIM) {
|
|---|
| 688 | cmpValue = _stecSat;
|
|---|
| 689 | }
|
|---|
| 690 | else {
|
|---|
| 691 | // Non-Dispersive Part
|
|---|
| 692 | // -------------------
|
|---|
| 693 | double nonDisp = _model._rho
|
|---|
| 694 | + _model._recClkM - _model._satClkM
|
|---|
| 695 | + _model._sagnac + _model._antEcc + _model._tropo
|
|---|
| 696 | + _model._tideEarth + _model._tideOcean + _model._rel;
|
|---|
| 697 |
|
|---|
| 698 | // Add Dispersive Part
|
|---|
| 699 | // -------------------
|
|---|
| 700 | double dispPart = 0.0;
|
|---|
| 701 | map<t_frequency::type, double> codeCoeff;
|
|---|
| 702 | map<t_frequency::type, double> phaseCoeff;
|
|---|
| 703 | map<t_frequency::type, double> ionoCoeff;
|
|---|
| 704 | lcCoeff(LC, codeCoeff, phaseCoeff, ionoCoeff);
|
|---|
| 705 | map<t_frequency::type, double>::const_iterator it;
|
|---|
| 706 | for (it = codeCoeff.begin(); it != codeCoeff.end(); it++) {
|
|---|
| 707 | t_frequency::type tFreq = it->first;
|
|---|
| 708 | dispPart += it->second * (_model._antPCO[tFreq] - _model._codeBias[tFreq]);
|
|---|
| 709 | }
|
|---|
| 710 | for (it = phaseCoeff.begin(); it != phaseCoeff.end(); it++) {
|
|---|
| 711 | t_frequency::type tFreq = it->first;
|
|---|
| 712 | dispPart += it->second * (_model._antPCO[tFreq] - _model._phaseBias[tFreq] +
|
|---|
| 713 | _model._windUp * t_CST::lambda(tFreq, _channel));
|
|---|
| 714 | }
|
|---|
| 715 | cmpValue = nonDisp + dispPart;
|
|---|
| 716 | }
|
|---|
| 717 |
|
|---|
| 718 | return cmpValue;
|
|---|
| 719 | }
|
|---|
| 720 |
|
|---|
| 721 | //
|
|---|
| 722 | ////////////////////////////////////////////////////////////////////////////
|
|---|
| 723 | void t_pppSatObs::setRes(t_lc LC, double res) {
|
|---|
| 724 | _res[LC] = res;
|
|---|
| 725 | }
|
|---|
| 726 |
|
|---|
| 727 | //
|
|---|
| 728 | ////////////////////////////////////////////////////////////////////////////
|
|---|
| 729 | double t_pppSatObs::getRes(t_lc LC) const {
|
|---|
| 730 | map<t_lc, double>::const_iterator it = _res.find(LC);
|
|---|
| 731 | if (it != _res.end()) {
|
|---|
| 732 | return it->second;
|
|---|
| 733 | }
|
|---|
| 734 | else {
|
|---|
| 735 | return 0.0;
|
|---|
| 736 | }
|
|---|
| 737 | }
|
|---|
| 738 |
|
|---|
| 739 | //
|
|---|
| 740 | ////////////////////////////////////////////////////////////////////////////
|
|---|
| 741 | bool t_pppSatObs::setPseudoObsIono(t_frequency::type freq) {
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| 742 | bool pseudoObsIono = false;
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| 743 | _stecSat = _model._ionoCodeDelay[freq];
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| 744 | if (_stecSat) {
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| 745 | pseudoObsIono = true;
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| 746 | }
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| 747 | return pseudoObsIono;
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| 748 | }
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| 749 |
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| 750 | //
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| 751 | ////////////////////////////////////////////////////////////////////////////
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| 752 | bool t_pppSatObs::hasBiases() const {
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|---|
| 753 | bool ar = OPT->arSystem(_prn.system());
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|---|
| 754 | set<t_frequency::type> frqs;
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|---|
| 755 | for (const auto& lc : OPT->LCs(_prn.system())) {
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|---|
| 756 | if (lc._frq1 != t_frequency::dummy) frqs.insert(lc._frq1);
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|---|
| 757 | if (lc._frq2 != t_frequency::dummy) frqs.insert(lc._frq2);
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|---|
| 758 | }
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|---|
| 759 | for (int iFreq : frqs) {
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|---|
| 760 | if (_obs[iFreq] != 0) {
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|---|
| 761 | if (_model._codeBias[iFreq] == 0 || (ar && _model._phaseBias[iFreq] == 0)) {
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|---|
| 762 | return false;
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|---|
| 763 | }
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|---|
| 764 | }
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|---|
| 765 | }
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| 766 | return true;
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|---|
| 767 | }
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