[7237] | 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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[7288] | 13 | * Changes:
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[7237] | 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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[9473] | 19 | #include <iomanip>
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[7237] | 20 | #include <cmath>
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| 21 | #include <newmatio.h>
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| 22 |
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| 23 | #include "pppSatObs.h"
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| 24 | #include "bncconst.h"
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| 25 | #include "pppEphPool.h"
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| 26 | #include "pppStation.h"
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| 27 | #include "bncutils.h"
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| 28 | #include "bncantex.h"
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| 29 | #include "pppObsPool.h"
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| 30 | #include "pppClient.h"
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| 31 |
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| 32 | using namespace BNC_PPP;
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[9590] | 33 | using namespace std;
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[7237] | 34 |
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[10231] | 35 | const double GLO_WEIGHT_FACTOR = 1.0;
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| 36 | const double BDS_WEIGHT_FACTOR = 1.0;
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[9821] | 37 |
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[7237] | 38 | // Constructor
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| 39 | ////////////////////////////////////////////////////////////////////////////
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| 40 | t_pppSatObs::t_pppSatObs(const t_satObs& pppSatObs) {
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[8905] | 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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[9866] | 47 | _signalPriorities = QString::fromStdString(OPT->_signalPriorities);
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[7237] | 48 | for (unsigned ii = 0; ii < t_frequency::max; ii++) {
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| 49 | _obs[ii] = 0;
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| 50 | }
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| 51 | prepareObs(pppSatObs);
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| 52 | }
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| 53 |
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| 54 | // Destructor
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| 55 | ////////////////////////////////////////////////////////////////////////////
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| 56 | t_pppSatObs::~t_pppSatObs() {
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| 57 | for (unsigned iFreq = 1; iFreq < t_frequency::max; iFreq++) {
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| 58 | delete _obs[iFreq];
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| 59 | }
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| 60 | }
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| 61 |
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[7288] | 62 | //
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[7237] | 63 | ////////////////////////////////////////////////////////////////////////////
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[10251] | 64 | void t_pppSatObs::prepareObs(const t_satObs& pppSatObs) {//cout << "SATELLITE: " << _prn.toString() << endl;
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[7237] | 65 |
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| 66 | _model.reset();
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| 67 |
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[10251] | 68 | std::vector<char> bb = OPT->frqBands(_prn.system());
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| 69 | char frqNum1 = '0';
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| 70 | if (bb.size() >= 1) {
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| 71 | frqNum1 = bb[0];
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| 72 | }
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| 73 | char frqNum2 = '0';
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| 74 | if (bb.size() == 2) {
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| 75 | frqNum2 = bb[1];
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| 76 | }
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| 77 |
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[9446] | 78 | // Select pseudo-ranges and phase observations
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[9386] | 79 | // -------------------------------------------
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[9866] | 80 | QStringList priorList = _signalPriorities.split(" ", QString::SkipEmptyParts);
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[9598] | 81 | string preferredAttrib;
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[7237] | 82 | for (unsigned iFreq = 1; iFreq < t_frequency::max; iFreq++) {
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[9598] | 83 | t_frequency::type frqType = static_cast<t_frequency::type>(iFreq);
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| 84 | char frqSys = t_frequency::toString(frqType)[0]; //cout << "frqSys: " << frqSys << endl;
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| 85 | char frqNum = t_frequency::toString(frqType)[1]; //cout << "frqNum: " << frqNum << endl;
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[10251] | 86 | if (frqSys != _prn.system()) {
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[9598] | 87 | continue;
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| 88 | }
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[10251] | 89 | if (frqNum != frqNum1 &&
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| 90 | frqNum != frqNum2 ) {
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| 91 | continue;
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| 92 | }
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[9598] | 93 | QStringList hlp;
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| 94 | for (int ii = 0; ii < priorList.size(); ii++) {
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| 95 | if (priorList[ii].indexOf(":") != -1) {
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| 96 | hlp = priorList[ii].split(":", QString::SkipEmptyParts);
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| 97 | if (hlp.size() == 2 && hlp[0].length() == 1 && hlp[0][0] == frqSys) {
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| 98 | hlp = hlp[1].split("&", QString::SkipEmptyParts);
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| 99 | }
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| 100 | if (hlp.size() == 2 && hlp[0].indexOf(frqNum) != -1) {
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| 101 | preferredAttrib = hlp[1].toStdString(); //cout << "preferredAttrib: " << preferredAttrib << endl;
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| 102 | }
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| 103 | }
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| 104 | for (unsigned iPref = 0; iPref < preferredAttrib.length(); iPref++) {
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| 105 | QString obsType = QString("%1").arg(frqNum) + preferredAttrib[iPref]; //cout << "obstype: " << obsType.toStdString().c_str() << endl;
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| 106 | if (_obs[iFreq] == 0) {
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| 107 | for (unsigned ii = 0; ii < pppSatObs._obs.size(); ii++) {
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| 108 | const t_frqObs* obs = pppSatObs._obs[ii];
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| 109 | //cout << "observation2char: " << obs->_rnxType2ch << " vs. " << obsType.toStdString().c_str()<< endl;
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| 110 | if (obs->_rnxType2ch == obsType.toStdString() &&
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[10251] | 111 | obs->_codeValid && obs->_code &&
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[10217] | 112 | obs->_phaseValid && obs->_phase) {
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[10327] | 113 | _obs[iFreq] = new t_frqObs(*obs); //cout << "================> newObs: " << obs->_rnxType2ch << " obs->_lockTime: " << obs->_lockTime << endl;
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[9598] | 114 | }
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[7237] | 115 | }
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| 116 | }
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| 117 | }
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| 118 | }
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| 119 | }
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| 120 |
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| 121 | // Used frequency types
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| 122 | // --------------------
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[10251] | 123 | _fType1 = t_frqBand::toFreq(_prn.system(), frqNum1);
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| 124 | _fType2 = t_frqBand::toFreq(_prn.system(), frqNum2);
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[7237] | 125 |
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| 126 | // Check whether all required frequencies available
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| 127 | // ------------------------------------------------
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| 128 | for (unsigned ii = 0; ii < OPT->LCs(_prn.system()).size(); ii++) {
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| 129 | t_lc::type tLC = OPT->LCs(_prn.system())[ii];
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[9548] | 130 | if (tLC == t_lc::GIM) {continue;}
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[7237] | 131 | if (!isValid(tLC)) {
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| 132 | _valid = false;
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| 133 | return;
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| 134 | }
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| 135 | }
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| 136 |
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[9560] | 137 | // Find GLONASS Channel Number
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[7237] | 138 | // ---------------------------
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| 139 | if (_prn.system() == 'R') {
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| 140 | _channel = PPP_CLIENT->ephPool()->getChannel(_prn);
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| 141 | }
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| 142 | else {
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| 143 | _channel = 0;
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| 144 | }
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| 145 |
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| 146 | // Compute Satellite Coordinates at Time of Transmission
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| 147 | // -----------------------------------------------------
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[8619] | 148 | _xcSat.ReSize(6); _xcSat = 0.0;
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[8495] | 149 | _vvSat.ReSize(3); _vvSat = 0.0;
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[7237] | 150 | bool totOK = false;
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[8619] | 151 | ColumnVector satPosOld(6); satPosOld = 0.0;
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[9600] | 152 | t_lc::type tLC = t_lc::dummy;
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| 153 | if (isValid(t_lc::cIF)) {
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| 154 | tLC = t_lc::cIF;
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| 155 | }
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| 156 | if (tLC == t_lc::dummy && isValid(t_lc::c1)) {
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| 157 | tLC = t_lc::c1;
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| 158 | }
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| 159 | if (tLC == t_lc::dummy && isValid(t_lc::c2)) {
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| 160 | tLC = t_lc::c2;
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| 161 | }
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| 162 | if (tLC == t_lc::dummy) {
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| 163 | _valid = false;
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| 164 | return;
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| 165 | }
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[7237] | 166 | double prange = obsValue(tLC);
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| 167 | for (int ii = 1; ii <= 10; ii++) {
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| 168 | bncTime ToT = _time - prange / t_CST::c - _xcSat[3];
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| 169 | if (PPP_CLIENT->ephPool()->getCrd(_prn, ToT, _xcSat, _vvSat) != success) {
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| 170 | _valid = false;
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| 171 | return;
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| 172 | }
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| 173 | ColumnVector dx = _xcSat - satPosOld;
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| 174 | dx[3] *= t_CST::c;
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[8905] | 175 | if (dx.NormFrobenius() < 1.e-4) {
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[7237] | 176 | totOK = true;
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| 177 | break;
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| 178 | }
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[7288] | 179 | satPosOld = _xcSat;
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[7237] | 180 | }
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| 181 | if (totOK) {
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[7250] | 182 | _signalPropagationTime = prange / t_CST::c - _xcSat[3];
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[7288] | 183 | _model._satClkM = _xcSat[3] * t_CST::c;
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[7237] | 184 | }
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| 185 | else {
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| 186 | _valid = false;
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| 187 | }
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| 188 | }
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| 189 |
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[7288] | 190 | //
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[7237] | 191 | ////////////////////////////////////////////////////////////////////////////
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[7288] | 192 | void t_pppSatObs::lcCoeff(t_lc::type tLC,
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[7237] | 193 | map<t_frequency::type, double>& codeCoeff,
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[8905] | 194 | map<t_frequency::type, double>& phaseCoeff,
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| 195 | map<t_frequency::type, double>& ionoCoeff) const {
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[7237] | 196 |
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| 197 | codeCoeff.clear();
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| 198 | phaseCoeff.clear();
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[8905] | 199 | ionoCoeff.clear();
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[7237] | 200 |
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| 201 | double f1 = t_CST::freq(_fType1, _channel);
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| 202 | double f2 = t_CST::freq(_fType2, _channel);
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[8905] | 203 | double f1GPS = t_CST::freq(t_frequency::G1, 0);
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[7237] | 204 |
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| 205 | switch (tLC) {
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| 206 | case t_lc::l1:
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[8905] | 207 | phaseCoeff[_fType1] = 1.0;
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| 208 | ionoCoeff [_fType1] = -1.0 * pow(f1GPS, 2) / pow(f1, 2);
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[7237] | 209 | return;
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[7288] | 210 | case t_lc::l2:
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[8905] | 211 | phaseCoeff[_fType2] = 1.0;
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| 212 | ionoCoeff [_fType2] = -1.0 * pow(f1GPS, 2) / pow(f2, 2);
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[7237] | 213 | return;
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[7288] | 214 | case t_lc::lIF:
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[7237] | 215 | phaseCoeff[_fType1] = f1 * f1 / (f1 * f1 - f2 * f2);
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| 216 | phaseCoeff[_fType2] = -f2 * f2 / (f1 * f1 - f2 * f2);
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| 217 | return;
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[7288] | 218 | case t_lc::MW:
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[7237] | 219 | phaseCoeff[_fType1] = f1 / (f1 - f2);
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| 220 | phaseCoeff[_fType2] = -f2 / (f1 - f2);
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| 221 | codeCoeff[_fType1] = -f1 / (f1 + f2);
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| 222 | codeCoeff[_fType2] = -f2 / (f1 + f2);
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| 223 | return;
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[7288] | 224 | case t_lc::CL:
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[7237] | 225 | phaseCoeff[_fType1] = 0.5;
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[8905] | 226 | codeCoeff [_fType1] = 0.5;
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[7237] | 227 | return;
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[7288] | 228 | case t_lc::c1:
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| 229 | codeCoeff[_fType1] = 1.0;
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[8905] | 230 | ionoCoeff[_fType1] = pow(f1GPS, 2) / pow(f1, 2);
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[7237] | 231 | return;
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[7288] | 232 | case t_lc::c2:
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| 233 | codeCoeff[_fType2] = 1.0;
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[8905] | 234 | ionoCoeff[_fType2] = pow(f1GPS, 2) / pow(f2, 2);
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[7237] | 235 | return;
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[7288] | 236 | case t_lc::cIF:
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[7237] | 237 | codeCoeff[_fType1] = f1 * f1 / (f1 * f1 - f2 * f2);
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| 238 | codeCoeff[_fType2] = -f2 * f2 / (f1 * f1 - f2 * f2);
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| 239 | return;
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[8905] | 240 | case t_lc::GIM:
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[7288] | 241 | case t_lc::dummy:
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| 242 | case t_lc::maxLc:
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[7237] | 243 | return;
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| 244 | }
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| 245 | }
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| 246 |
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[7288] | 247 | //
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[7237] | 248 | ////////////////////////////////////////////////////////////////////////////
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| 249 | bool t_pppSatObs::isValid(t_lc::type tLC) const {
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| 250 | bool valid = true;
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| 251 | obsValue(tLC, &valid);
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[9497] | 252 |
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[7237] | 253 | return valid;
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| 254 | }
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[7288] | 255 | //
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[7237] | 256 | ////////////////////////////////////////////////////////////////////////////
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| 257 | double t_pppSatObs::obsValue(t_lc::type tLC, bool* valid) const {
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| 258 |
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[8905] | 259 | double retVal = 0.0;
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| 260 | if (valid) *valid = true;
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| 261 |
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| 262 | // Pseudo observations
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| 263 | if (tLC == t_lc::GIM) {
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[10034] | 264 | if (_stecSat == 0.0) {
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[8905] | 265 | if (valid) *valid = false;
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| 266 | return 0.0;
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| 267 | }
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| 268 | else {
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[10034] | 269 | return _stecSat;
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[8905] | 270 | }
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| 271 | }
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| 272 |
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[7237] | 273 | map<t_frequency::type, double> codeCoeff;
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| 274 | map<t_frequency::type, double> phaseCoeff;
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[8905] | 275 | map<t_frequency::type, double> ionoCoeff;
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| 276 | lcCoeff(tLC, codeCoeff, phaseCoeff, ionoCoeff);
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[7237] | 277 |
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[8905] | 278 | map<t_frequency::type, double>::const_iterator it;
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[7237] | 279 |
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[8905] | 280 | // Code observations
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[7237] | 281 | for (it = codeCoeff.begin(); it != codeCoeff.end(); it++) {
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| 282 | t_frequency::type tFreq = it->first;
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| 283 | if (_obs[tFreq] == 0) {
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| 284 | if (valid) *valid = false;
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| 285 | return 0.0;
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| 286 | }
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| 287 | else {
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| 288 | retVal += it->second * _obs[tFreq]->_code;
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| 289 | }
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| 290 | }
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[8905] | 291 | // Phase observations
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[7237] | 292 | for (it = phaseCoeff.begin(); it != phaseCoeff.end(); it++) {
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| 293 | t_frequency::type tFreq = it->first;
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| 294 | if (_obs[tFreq] == 0) {
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| 295 | if (valid) *valid = false;
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| 296 | return 0.0;
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| 297 | }
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| 298 | else {
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| 299 | retVal += it->second * _obs[tFreq]->_phase * t_CST::lambda(tFreq, _channel);
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| 300 | }
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| 301 | }
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| 302 | return retVal;
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| 303 | }
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| 304 |
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[7288] | 305 | //
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[7237] | 306 | ////////////////////////////////////////////////////////////////////////////
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| 307 | double t_pppSatObs::lambda(t_lc::type tLC) const {
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| 308 |
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| 309 | double f1 = t_CST::freq(_fType1, _channel);
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| 310 | double f2 = t_CST::freq(_fType2, _channel);
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| 311 |
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| 312 | if (tLC == t_lc::l1) {
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| 313 | return t_CST::c / f1;
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| 314 | }
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| 315 | else if (tLC == t_lc::l2) {
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| 316 | return t_CST::c / f2;
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| 317 | }
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| 318 | else if (tLC == t_lc::lIF) {
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| 319 | return t_CST::c / (f1 + f2);
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| 320 | }
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| 321 | else if (tLC == t_lc::MW) {
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| 322 | return t_CST::c / (f1 - f2);
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| 323 | }
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| 324 | else if (tLC == t_lc::CL) {
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| 325 | return t_CST::c / f1 / 2.0;
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| 326 | }
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| 327 |
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| 328 | return 0.0;
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| 329 | }
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| 330 |
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[7288] | 331 | //
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[7237] | 332 | ////////////////////////////////////////////////////////////////////////////
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| 333 | double t_pppSatObs::sigma(t_lc::type tLC) const {
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| 334 |
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[8905] | 335 | double retVal = 0.0;
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[7237] | 336 | map<t_frequency::type, double> codeCoeff;
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| 337 | map<t_frequency::type, double> phaseCoeff;
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[8905] | 338 | map<t_frequency::type, double> ionoCoeff;
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| 339 | lcCoeff(tLC, codeCoeff, phaseCoeff, ionoCoeff);
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[7237] | 340 |
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[8905] | 341 | if (tLC == t_lc::GIM) {
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[10034] | 342 | retVal = OPT->_sigmaGIM * OPT->_sigmaGIM;
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[8905] | 343 | }
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[7237] | 344 |
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| 345 | map<t_frequency::type, double>::const_iterator it;
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[9473] | 346 | for (it = codeCoeff.begin(); it != codeCoeff.end(); it++) {
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[7237] | 347 | retVal += it->second * it->second * OPT->_sigmaC1 * OPT->_sigmaC1;
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| 348 | }
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[8905] | 349 |
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[9473] | 350 | for (it = phaseCoeff.begin(); it != phaseCoeff.end(); it++) {
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[7237] | 351 | retVal += it->second * it->second * OPT->_sigmaL1 * OPT->_sigmaL1;
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| 352 | }
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| 353 |
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[7288] | 354 | retVal = sqrt(retVal);
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[9551] | 355 |
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[10327] | 356 | // De-Weight GLO
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| 357 | // -------------
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[10010] | 358 | if (_prn.system() == 'R' && t_lc::includesCode(tLC)) {
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[9821] | 359 | retVal *= GLO_WEIGHT_FACTOR;
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| 360 | }
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| 361 |
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| 362 |
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[7237] | 363 | // Elevation-Dependent Weighting
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| 364 | // -----------------------------
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| 365 | double cEle = 1.0;
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| 366 | if ( (OPT->_eleWgtCode && t_lc::includesCode(tLC)) ||
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| 367 | (OPT->_eleWgtPhase && t_lc::includesPhase(tLC)) ) {
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| 368 | double eleD = eleSat()*180.0/M_PI;
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| 369 | double hlp = fabs(90.0 - eleD);
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| 370 | cEle = (1.0 + hlp*hlp*hlp*0.000004);
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| 371 | }
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| 372 |
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| 373 | return cEle * retVal;
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| 374 | }
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| 375 |
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[7288] | 376 | //
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[7237] | 377 | ////////////////////////////////////////////////////////////////////////////
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[9386] | 378 | double t_pppSatObs::maxRes(t_lc::type tLC) const {
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[8905] | 379 | double retVal = 0.0;
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[7237] | 380 |
|
---|
| 381 | map<t_frequency::type, double> codeCoeff;
|
---|
| 382 | map<t_frequency::type, double> phaseCoeff;
|
---|
[8905] | 383 | map<t_frequency::type, double> ionoCoeff;
|
---|
| 384 | lcCoeff(tLC, codeCoeff, phaseCoeff, ionoCoeff);
|
---|
[7237] | 385 |
|
---|
| 386 | map<t_frequency::type, double>::const_iterator it;
|
---|
[9473] | 387 | for (it = codeCoeff.begin(); it != codeCoeff.end(); it++) {
|
---|
[7237] | 388 | retVal += it->second * it->second * OPT->_maxResC1 * OPT->_maxResC1;
|
---|
| 389 | }
|
---|
[9473] | 390 | for (it = phaseCoeff.begin(); it != phaseCoeff.end(); it++) {
|
---|
[7237] | 391 | retVal += it->second * it->second * OPT->_maxResL1 * OPT->_maxResL1;
|
---|
| 392 | }
|
---|
[8905] | 393 | if (tLC == t_lc::GIM) {
|
---|
[9553] | 394 | retVal = OPT->_maxResGIM * OPT->_maxResGIM + OPT->_maxResGIM * OPT->_maxResGIM;
|
---|
[8905] | 395 | }
|
---|
[9386] | 396 |
|
---|
| 397 | retVal = sqrt(retVal);
|
---|
[9537] | 398 |
|
---|
[10222] | 399 |
|
---|
[10327] | 400 | // Enlarge maxRes GLO
|
---|
| 401 | // ------------------
|
---|
[10222] | 402 | if (_prn.system() == 'R' && t_lc::includesCode(tLC)) {
|
---|
| 403 | retVal *= GLO_WEIGHT_FACTOR;
|
---|
| 404 | }
|
---|
| 405 |
|
---|
[9561] | 406 | return retVal;
|
---|
[7237] | 407 | }
|
---|
| 408 |
|
---|
| 409 |
|
---|
[7288] | 410 | //
|
---|
[7237] | 411 | ////////////////////////////////////////////////////////////////////////////
|
---|
| 412 | t_irc t_pppSatObs::cmpModel(const t_pppStation* station) {
|
---|
| 413 |
|
---|
| 414 | // Reset all model values
|
---|
| 415 | // ----------------------
|
---|
| 416 | _model.reset();
|
---|
| 417 |
|
---|
| 418 | // Topocentric Satellite Position
|
---|
| 419 | // ------------------------------
|
---|
| 420 | ColumnVector rSat = _xcSat.Rows(1,3);
|
---|
[8905] | 421 | ColumnVector rRec = station->xyzApr();
|
---|
| 422 | ColumnVector rhoV = rSat - rRec;
|
---|
| 423 | _model._rho = rhoV.NormFrobenius();
|
---|
[7237] | 424 |
|
---|
[8619] | 425 | ColumnVector vSat = _vvSat;
|
---|
| 426 |
|
---|
[7237] | 427 | ColumnVector neu(3);
|
---|
| 428 | xyz2neu(station->ellApr().data(), rhoV.data(), neu.data());
|
---|
| 429 |
|
---|
[8905] | 430 | _model._eleSat = acos(sqrt(neu[0]*neu[0] + neu[1]*neu[1]) / _model._rho);
|
---|
[10219] | 431 | if (neu[2] < 0.0) {
|
---|
[7237] | 432 | _model._eleSat *= -1.0;
|
---|
| 433 | }
|
---|
| 434 | _model._azSat = atan2(neu[1], neu[0]);
|
---|
| 435 |
|
---|
[9485] | 436 | // Sun unit vector
|
---|
| 437 | ColumnVector xSun = t_astro::Sun(_time.mjddec());
|
---|
| 438 | xSun /= xSun.norm_Frobenius();
|
---|
| 439 |
|
---|
| 440 | // Satellite unit vectors sz, sy, sx
|
---|
| 441 | ColumnVector sz = -rSat / rSat.norm_Frobenius();
|
---|
| 442 | ColumnVector sy = crossproduct(sz, xSun);
|
---|
| 443 | ColumnVector sx = crossproduct(sy, sz);
|
---|
| 444 |
|
---|
| 445 | sx /= sx.norm_Frobenius();
|
---|
| 446 | sy /= sy.norm_Frobenius();
|
---|
| 447 |
|
---|
| 448 | // LOS unit vector satellite --> receiver
|
---|
| 449 | ColumnVector rho = rRec - rSat;
|
---|
| 450 | rho /= rho.norm_Frobenius();
|
---|
| 451 |
|
---|
| 452 | // LOS vector in satellite frame
|
---|
| 453 | ColumnVector u(3);
|
---|
| 454 | u(1) = dotproduct(sx, rho);
|
---|
| 455 | u(2) = dotproduct(sy, rho);
|
---|
| 456 | u(3) = dotproduct(sz, rho);
|
---|
| 457 |
|
---|
| 458 | // Azimuth and elevation in satellite antenna frame
|
---|
| 459 | _model._elTx = atan2(u(3),sqrt(pow(u(2),2)+pow(u(1),2)));
|
---|
| 460 | _model._azTx = atan2(u(2),u(1));
|
---|
| 461 |
|
---|
| 462 |
|
---|
[7237] | 463 | // Satellite Clocks
|
---|
| 464 | // ----------------
|
---|
| 465 | _model._satClkM = _xcSat[3] * t_CST::c;
|
---|
| 466 |
|
---|
| 467 | // Receiver Clocks
|
---|
| 468 | // ---------------
|
---|
| 469 | _model._recClkM = station->dClk() * t_CST::c;
|
---|
| 470 |
|
---|
| 471 | // Sagnac Effect (correction due to Earth rotation)
|
---|
| 472 | // ------------------------------------------------
|
---|
| 473 | ColumnVector Omega(3);
|
---|
| 474 | Omega[0] = 0.0;
|
---|
| 475 | Omega[1] = 0.0;
|
---|
| 476 | Omega[2] = t_CST::omega / t_CST::c;
|
---|
[8905] | 477 | _model._sagnac = DotProduct(Omega, crossproduct(rSat, rRec));
|
---|
[7237] | 478 |
|
---|
| 479 | // Antenna Eccentricity
|
---|
| 480 | // --------------------
|
---|
| 481 | _model._antEcc = -DotProduct(station->xyzEcc(), rhoV) / _model._rho;
|
---|
| 482 |
|
---|
| 483 | // Antenna Phase Center Offsets and Variations
|
---|
| 484 | // -------------------------------------------
|
---|
| 485 | if (PPP_CLIENT->antex()) {
|
---|
| 486 | for (unsigned ii = 0; ii < t_frequency::max; ii++) {
|
---|
| 487 | t_frequency::type frqType = static_cast<t_frequency::type>(ii);
|
---|
[9598] | 488 | string frqStr = t_frequency::toString(frqType);
|
---|
| 489 | if (frqStr[0] != _prn.system()) {continue;}
|
---|
[7237] | 490 | bool found;
|
---|
[9485] | 491 | QString prn(_prn.toString().c_str());
|
---|
| 492 | _model._antPCO[ii] = PPP_CLIENT->antex()->rcvCorr(station->antName(), frqType, _model._eleSat, _model._azSat, found);
|
---|
[9593] | 493 | _model._antPCO[ii] += PPP_CLIENT->antex()->satCorr(prn, frqType, _model._elTx, _model._azTx, found);
|
---|
[9560] | 494 | if (OPT->_isAPC && found) {
|
---|
[9485] | 495 | // the PCOs as given in the satellite antenna correction for all frequencies
|
---|
[9807] | 496 | // have to be reduced by the PCO of the respective reference frequency
|
---|
[9485] | 497 | if (_prn.system() == 'G') {
|
---|
| 498 | _model._antPCO[ii] -= PPP_CLIENT->antex()->satCorr(prn, t_frequency::G1, _model._elTx, _model._azTx, found);
|
---|
| 499 | }
|
---|
| 500 | else if (_prn.system() == 'R') {
|
---|
| 501 | _model._antPCO[ii] -= PPP_CLIENT->antex()->satCorr(prn, t_frequency::R1, _model._elTx, _model._azTx, found);
|
---|
| 502 | }
|
---|
| 503 | else if (_prn.system() == 'E') {
|
---|
| 504 | _model._antPCO[ii] -= PPP_CLIENT->antex()->satCorr(prn, t_frequency::E1, _model._elTx, _model._azTx, found);
|
---|
| 505 | }
|
---|
| 506 | else if (_prn.system() == 'C') {
|
---|
| 507 | _model._antPCO[ii] -= PPP_CLIENT->antex()->satCorr(prn, t_frequency::C2, _model._elTx, _model._azTx, found);
|
---|
| 508 | }
|
---|
| 509 | }
|
---|
[7237] | 510 | }
|
---|
| 511 | }
|
---|
| 512 |
|
---|
| 513 | // Tropospheric Delay
|
---|
| 514 | // ------------------
|
---|
[8961] | 515 | _model._tropo = t_tropo::delay_saast(rRec, _model._eleSat);
|
---|
[7237] | 516 |
|
---|
| 517 | // Code Biases
|
---|
| 518 | // -----------
|
---|
| 519 | const t_satCodeBias* satCodeBias = PPP_CLIENT->obsPool()->satCodeBias(_prn);
|
---|
[7288] | 520 | if (satCodeBias) {
|
---|
[7237] | 521 | for (unsigned ii = 0; ii < satCodeBias->_bias.size(); ii++) {
|
---|
| 522 | const t_frqCodeBias& bias = satCodeBias->_bias[ii];
|
---|
| 523 | for (unsigned iFreq = 1; iFreq < t_frequency::max; iFreq++) {
|
---|
[9598] | 524 | string frqStr = t_frequency::toString(t_frequency::type(iFreq));
|
---|
| 525 | if (frqStr[0] != _prn.system()) {
|
---|
| 526 | continue;
|
---|
| 527 | }
|
---|
[7237] | 528 | const t_frqObs* obs = _obs[iFreq];
|
---|
[10251] | 529 | if (obs &&
|
---|
| 530 | obs->_rnxType2ch == bias._rnxType2ch) {
|
---|
[7237] | 531 | _model._codeBias[iFreq] = bias._value;
|
---|
| 532 | }
|
---|
| 533 | }
|
---|
| 534 | }
|
---|
| 535 | }
|
---|
| 536 |
|
---|
[7288] | 537 | // Phase Biases
|
---|
| 538 | // -----------
|
---|
| 539 | const t_satPhaseBias* satPhaseBias = PPP_CLIENT->obsPool()->satPhaseBias(_prn);
|
---|
[8619] | 540 | double yaw = 0.0;
|
---|
| 541 | bool ssr = false;
|
---|
[7288] | 542 | if (satPhaseBias) {
|
---|
[8905] | 543 | double dt = station->epochTime() - satPhaseBias->_time;
|
---|
| 544 | if (satPhaseBias->_updateInt) {
|
---|
| 545 | dt -= (0.5 * ssrUpdateInt[satPhaseBias->_updateInt]);
|
---|
| 546 | }
|
---|
| 547 | yaw = satPhaseBias->_yaw + satPhaseBias->_yawRate * dt;
|
---|
[8619] | 548 | ssr = true;
|
---|
[7288] | 549 | for (unsigned ii = 0; ii < satPhaseBias->_bias.size(); ii++) {
|
---|
| 550 | const t_frqPhaseBias& bias = satPhaseBias->_bias[ii];
|
---|
| 551 | for (unsigned iFreq = 1; iFreq < t_frequency::max; iFreq++) {
|
---|
[9598] | 552 | string frqStr = t_frequency::toString(t_frequency::type(iFreq));
|
---|
| 553 | if (frqStr[0] != _prn.system()) {
|
---|
| 554 | continue;
|
---|
| 555 | }
|
---|
[7288] | 556 | const t_frqObs* obs = _obs[iFreq];
|
---|
[10251] | 557 | if (obs &&
|
---|
| 558 | obs->_rnxType2ch == bias._rnxType2ch) {
|
---|
[7288] | 559 | _model._phaseBias[iFreq] = bias._value;
|
---|
| 560 | }
|
---|
| 561 | }
|
---|
| 562 | }
|
---|
| 563 | }
|
---|
| 564 |
|
---|
[8619] | 565 | // Phase Wind-Up
|
---|
| 566 | // -------------
|
---|
| 567 | _model._windUp = station->windUp(_time, _prn, rSat, ssr, yaw, vSat) ;
|
---|
| 568 |
|
---|
[8905] | 569 | // Relativistic effect due to earth gravity
|
---|
| 570 | // ----------------------------------------
|
---|
| 571 | double a = rSat.NormFrobenius() + rRec.NormFrobenius();
|
---|
| 572 | double b = (rSat - rRec).NormFrobenius();
|
---|
| 573 | double gm = 3.986004418e14; // m3/s2
|
---|
| 574 | _model._rel = 2 * gm / t_CST::c / t_CST::c * log((a + b) / (a - b));
|
---|
[8619] | 575 |
|
---|
[7237] | 576 | // Tidal Correction
|
---|
| 577 | // ----------------
|
---|
[8905] | 578 | _model._tideEarth = -DotProduct(station->tideDsplEarth(), rhoV) / _model._rho;
|
---|
| 579 | _model._tideOcean = -DotProduct(station->tideDsplOcean(), rhoV) / _model._rho;
|
---|
[7237] | 580 |
|
---|
| 581 | // Ionospheric Delay
|
---|
| 582 | // -----------------
|
---|
[7250] | 583 | const t_vTec* vTec = PPP_CLIENT->obsPool()->vTec();
|
---|
[7253] | 584 | bool vTecUsage = true;
|
---|
| 585 | for (unsigned ii = 0; ii < OPT->LCs(_prn.system()).size(); ii++) {
|
---|
| 586 | t_lc::type tLC = OPT->LCs(_prn.system())[ii];
|
---|
| 587 | if (tLC == t_lc::cIF || tLC == t_lc::lIF) {
|
---|
| 588 | vTecUsage = false;
|
---|
[7237] | 589 | }
|
---|
| 590 | }
|
---|
[8905] | 591 |
|
---|
[7258] | 592 | if (vTecUsage && vTec) {
|
---|
[8905] | 593 | double stec = station->stec(vTec, _signalPropagationTime, rSat);
|
---|
| 594 | double f1GPS = t_CST::freq(t_frequency::G1, 0);
|
---|
[7258] | 595 | for (unsigned iFreq = 1; iFreq < t_frequency::max; iFreq++) {
|
---|
[10034] | 596 | if (OPT->_pseudoObsIono) {
|
---|
[8905] | 597 | // For scaling the slant ionospheric delays the trick is to be consistent with units!
|
---|
| 598 | // The conversion of TECU into meters requires the frequency of the signal.
|
---|
| 599 | // Hence, GPS L1 frequency is used for all systems. The same is true for mu_i in lcCoeff().
|
---|
| 600 | _model._ionoCodeDelay[iFreq] = 40.3E16 / pow(f1GPS, 2) * stec;
|
---|
| 601 | }
|
---|
| 602 | else { // PPP-RTK
|
---|
| 603 | t_frequency::type frqType = static_cast<t_frequency::type>(iFreq);
|
---|
| 604 | _model._ionoCodeDelay[iFreq] = 40.3E16 / pow(t_CST::freq(frqType, _channel), 2) * stec;
|
---|
| 605 | }
|
---|
[7253] | 606 | }
|
---|
| 607 | }
|
---|
[7237] | 608 |
|
---|
| 609 | // Set Model Set Flag
|
---|
| 610 | // ------------------
|
---|
| 611 | _model._set = true;
|
---|
| 612 |
|
---|
[10252] | 613 | //printModel();
|
---|
[7252] | 614 |
|
---|
[7237] | 615 | return success;
|
---|
| 616 | }
|
---|
| 617 |
|
---|
[7288] | 618 | //
|
---|
[7237] | 619 | ////////////////////////////////////////////////////////////////////////////
|
---|
| 620 | void t_pppSatObs::printModel() const {
|
---|
[8956] | 621 |
|
---|
| 622 | LOG.setf(ios::fixed);
|
---|
| 623 | LOG << "\nMODEL for Satellite " << _prn.toString() << (isReference() ? " (Reference Satellite)" : "")
|
---|
| 624 |
|
---|
[9598] | 625 | << "\n======================= " << endl
|
---|
[10251] | 626 | << "PPP "
|
---|
[9588] | 627 | << ((OPT->_pseudoObsIono) ? " with pseudo-observations for STEC" : "") << endl
|
---|
[8905] | 628 | << "RHO : " << setw(12) << setprecision(3) << _model._rho << endl
|
---|
| 629 | << "ELE : " << setw(12) << setprecision(3) << _model._eleSat * RHO_DEG << endl
|
---|
| 630 | << "AZI : " << setw(12) << setprecision(3) << _model._azSat * RHO_DEG << endl
|
---|
| 631 | << "SATCLK : " << setw(12) << setprecision(3) << _model._satClkM << endl
|
---|
| 632 | << "RECCLK : " << setw(12) << setprecision(3) << _model._recClkM << endl
|
---|
| 633 | << "SAGNAC : " << setw(12) << setprecision(3) << _model._sagnac << endl
|
---|
| 634 | << "ANTECC : " << setw(12) << setprecision(3) << _model._antEcc << endl
|
---|
| 635 | << "TROPO : " << setw(12) << setprecision(3) << _model._tropo << endl
|
---|
| 636 | << "WINDUP : " << setw(12) << setprecision(3) << _model._windUp << endl
|
---|
| 637 | << "REL : " << setw(12) << setprecision(3) << _model._rel << endl
|
---|
| 638 | << "EARTH TIDES : " << setw(12) << setprecision(3) << _model._tideEarth << endl
|
---|
| 639 | << "OCEAN TIDES : " << setw(12) << setprecision(3) << _model._tideOcean << endl
|
---|
| 640 | << endl
|
---|
| 641 | << "FREQUENCY DEPENDENT CORRECTIONS:" << endl
|
---|
| 642 | << "-------------------------------" << endl;
|
---|
[7237] | 643 | for (unsigned iFreq = 1; iFreq < t_frequency::max; iFreq++) {
|
---|
| 644 | if (_obs[iFreq]) {
|
---|
[7288] | 645 | string frqStr = t_frequency::toString(t_frequency::type(iFreq));
|
---|
| 646 | if (_prn.system() == frqStr[0]) {
|
---|
[8956] | 647 | LOG << "PCO : " << frqStr << setw(12) << setprecision(3) << _model._antPCO[iFreq] << endl
|
---|
[9598] | 648 | << "BIAS CODE : " << frqStr << setw(12) << setprecision(3) << _model._codeBias[iFreq] << "\t(" << _obs[iFreq]->_rnxType2ch[1] << ") " << endl
|
---|
| 649 | << "BIAS PHASE : " << frqStr << setw(12) << setprecision(3) << _model._phaseBias[iFreq] << "\t(" << _obs[iFreq]->_rnxType2ch[1] << ") " << endl
|
---|
[9588] | 650 | << "IONO CODEDELAY: " << frqStr << setw(12) << setprecision(3) << _model._ionoCodeDelay[iFreq]<< endl;
|
---|
[7288] | 651 | }
|
---|
[7237] | 652 | }
|
---|
| 653 | }
|
---|
[8905] | 654 | }
|
---|
| 655 |
|
---|
| 656 | //
|
---|
| 657 | ////////////////////////////////////////////////////////////////////////////
|
---|
| 658 | void t_pppSatObs::printObsMinusComputed() const {
|
---|
[9618] | 659 | LOG.setf(ios::fixed);
|
---|
| 660 | LOG << "\nOBS-COMP for Satellite " << _prn.toString() << (isReference() ? " (Reference Satellite)" : "") << endl
|
---|
[8905] | 661 | << "========================== " << endl;
|
---|
[10256] | 662 | char sys = _prn.system();
|
---|
| 663 | for (unsigned ii = 0; ii < OPT->LCs(sys).size(); ii++) {
|
---|
| 664 | t_lc::type tLC = OPT->LCs(sys)[ii];
|
---|
| 665 | double offGlo = 0;
|
---|
| 666 | if (sys == 'R' && tLC != t_lc::MW) {
|
---|
| 667 | offGlo = PPP_CLIENT->offGlo();
|
---|
| 668 | }
|
---|
| 669 | double offGal = 0;
|
---|
| 670 | if (sys == 'E' && tLC != t_lc::MW) {
|
---|
| 671 | offGal = PPP_CLIENT->offGal();
|
---|
| 672 | }
|
---|
| 673 | double offBds = 0;
|
---|
| 674 | if (sys == 'C' && tLC != t_lc::MW) {
|
---|
| 675 | offBds = PPP_CLIENT->offBds();
|
---|
| 676 | }
|
---|
[9618] | 677 | LOG << "OBS-CMP " << setw(4) << t_lc::toString(tLC) << ": " << _prn.toString() << " "
|
---|
[7253] | 678 | << setw(12) << setprecision(3) << obsValue(tLC) << " "
|
---|
| 679 | << setw(12) << setprecision(3) << cmpValue(tLC) << " "
|
---|
[10256] | 680 | << setw(12) << setprecision(3) << obsValue(tLC) - offGlo - offGal - offBds - cmpValue(tLC) << endl;
|
---|
[7253] | 681 | }
|
---|
[7237] | 682 | }
|
---|
| 683 |
|
---|
[7288] | 684 | //
|
---|
[7237] | 685 | ////////////////////////////////////////////////////////////////////////////
|
---|
| 686 | double t_pppSatObs::cmpValueForBanc(t_lc::type tLC) const {
|
---|
| 687 | return cmpValue(tLC) - _model._rho - _model._sagnac - _model._recClkM;
|
---|
| 688 | }
|
---|
| 689 |
|
---|
[7288] | 690 | //
|
---|
[7237] | 691 | ////////////////////////////////////////////////////////////////////////////
|
---|
| 692 | double t_pppSatObs::cmpValue(t_lc::type tLC) const {
|
---|
[8905] | 693 | double cmpValue;
|
---|
[7237] | 694 |
|
---|
[8905] | 695 | if (!isValid(tLC)) {
|
---|
| 696 | cmpValue = 0.0;
|
---|
[7237] | 697 | }
|
---|
[8905] | 698 | else if (tLC == t_lc::GIM) {
|
---|
[8961] | 699 | cmpValue = _stecSat;
|
---|
[8905] | 700 | }
|
---|
| 701 | else {
|
---|
| 702 | // Non-Dispersive Part
|
---|
| 703 | // -------------------
|
---|
| 704 | double nonDisp = _model._rho
|
---|
| 705 | + _model._recClkM - _model._satClkM
|
---|
| 706 | + _model._sagnac + _model._antEcc + _model._tropo
|
---|
| 707 | + _model._tideEarth + _model._tideOcean + _model._rel;
|
---|
[7237] | 708 |
|
---|
[8905] | 709 | // Add Dispersive Part
|
---|
| 710 | // -------------------
|
---|
| 711 | double dispPart = 0.0;
|
---|
| 712 | map<t_frequency::type, double> codeCoeff;
|
---|
| 713 | map<t_frequency::type, double> phaseCoeff;
|
---|
| 714 | map<t_frequency::type, double> ionoCoeff;
|
---|
| 715 | lcCoeff(tLC, codeCoeff, phaseCoeff, ionoCoeff);
|
---|
| 716 | map<t_frequency::type, double>::const_iterator it;
|
---|
| 717 | for (it = codeCoeff.begin(); it != codeCoeff.end(); it++) {
|
---|
| 718 | t_frequency::type tFreq = it->first;
|
---|
| 719 | dispPart += it->second * (_model._antPCO[tFreq] - _model._codeBias[tFreq]);
|
---|
[10251] | 720 | if (OPT->PPP_RTK) {
|
---|
[8905] | 721 | dispPart += it->second * (_model._ionoCodeDelay[tFreq]);
|
---|
| 722 | }
|
---|
| 723 | }
|
---|
| 724 | for (it = phaseCoeff.begin(); it != phaseCoeff.end(); it++) {
|
---|
| 725 | t_frequency::type tFreq = it->first;
|
---|
| 726 | dispPart += it->second * (_model._antPCO[tFreq] - _model._phaseBias[tFreq] +
|
---|
| 727 | _model._windUp * t_CST::lambda(tFreq, _channel));
|
---|
[10251] | 728 | if (OPT->PPP_RTK) {
|
---|
[8905] | 729 | dispPart += it->second * (- _model._ionoCodeDelay[tFreq]);
|
---|
| 730 | }
|
---|
| 731 | }
|
---|
| 732 | cmpValue = nonDisp + dispPart;
|
---|
[7237] | 733 | }
|
---|
| 734 |
|
---|
[8905] | 735 | return cmpValue;
|
---|
[7237] | 736 | }
|
---|
| 737 |
|
---|
[7288] | 738 | //
|
---|
[7237] | 739 | ////////////////////////////////////////////////////////////////////////////
|
---|
| 740 | void t_pppSatObs::setRes(t_lc::type tLC, double res) {
|
---|
| 741 | _res[tLC] = res;
|
---|
| 742 | }
|
---|
| 743 |
|
---|
[7288] | 744 | //
|
---|
[7237] | 745 | ////////////////////////////////////////////////////////////////////////////
|
---|
| 746 | double t_pppSatObs::getRes(t_lc::type tLC) const {
|
---|
| 747 | map<t_lc::type, double>::const_iterator it = _res.find(tLC);
|
---|
| 748 | if (it != _res.end()) {
|
---|
| 749 | return it->second;
|
---|
| 750 | }
|
---|
| 751 | else {
|
---|
| 752 | return 0.0;
|
---|
| 753 | }
|
---|
| 754 | }
|
---|
[8905] | 755 |
|
---|
| 756 | //
|
---|
| 757 | ////////////////////////////////////////////////////////////////////////////
|
---|
[10034] | 758 | bool t_pppSatObs::setPseudoObsIono(t_frequency::type freq) {
|
---|
| 759 | bool pseudoObsIono = false;
|
---|
[8905] | 760 | _stecSat = _model._ionoCodeDelay[freq];
|
---|
[10034] | 761 | if (_stecSat) {
|
---|
| 762 | pseudoObsIono = true;
|
---|
| 763 | }
|
---|
| 764 | return pseudoObsIono;
|
---|
[8905] | 765 | }
|
---|