1 | // Part of BNC, a utility for retrieving decoding and
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2 | // converting GNSS data streams from NTRIP broadcasters.
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3 | //
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4 | // Copyright (C) 2007
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5 | // German Federal Agency for Cartography and Geodesy (BKG)
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6 | // http://www.bkg.bund.de
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7 | // Czech Technical University Prague, Department of Geodesy
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8 | // http://www.fsv.cvut.cz
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9 | //
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10 | // Email: euref-ip@bkg.bund.de
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11 | //
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12 | // This program is free software; you can redistribute it and/or
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13 | // modify it under the terms of the GNU General Public License
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14 | // as published by the Free Software Foundation, version 2.
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15 | //
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16 | // This program is distributed in the hope that it will be useful,
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17 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
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18 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 | // GNU General Public License for more details.
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20 | //
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21 | // You should have received a copy of the GNU General Public License
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22 | // along with this program; if not, write to the Free Software
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23 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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24 |
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25 | /* -------------------------------------------------------------------------
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26 | * BKG NTRIP Client
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27 | * -------------------------------------------------------------------------
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28 | *
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29 | * Class: t_pppParam, t_pppFilter
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30 | *
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31 | * Purpose: Model for PPP
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32 | *
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33 | * Author: L. Mervart
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34 | *
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35 | * Created: 01-Dec-2009
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36 | *
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37 | * Changes:
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38 | *
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39 | * -----------------------------------------------------------------------*/
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40 |
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41 | #include <iomanip>
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42 | #include <cmath>
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43 | #include <sstream>
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44 | #include <newmatio.h>
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45 | #include <newmatap.h>
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46 |
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47 | #include "pppFilter.h"
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48 | #include "pppClient.h"
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49 | #include "bncutils.h"
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50 | #include "bncantex.h"
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51 | #include "pppOptions.h"
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52 | #include "pppModel.h"
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53 |
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54 | using namespace BNC_PPP;
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55 | using namespace std;
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56 |
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57 | const double MAXRES_CODE = 2.98 * 3.0;
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58 | const double MAXRES_PHASE_GPS = 2.98 * 0.03;
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59 | const double MAXRES_PHASE_GLONASS = 2.98 * 0.03;
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60 | const double GLONASS_WEIGHT_FACTOR = 1.0;
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61 |
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62 | #define LOG (_pppClient->log())
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63 | #define OPT (_pppClient->opt())
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64 |
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65 | // Constructor
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66 | ////////////////////////////////////////////////////////////////////////////
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67 | t_pppParam::t_pppParam(t_pppParam::parType typeIn, int indexIn,
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68 | const QString& prnIn) {
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69 | type = typeIn;
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70 | index = indexIn;
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71 | prn = prnIn;
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72 | index_old = 0;
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73 | xx = 0.0;
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74 | numEpo = 0;
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75 | }
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76 |
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77 | // Destructor
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78 | ////////////////////////////////////////////////////////////////////////////
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79 | t_pppParam::~t_pppParam() {
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80 | }
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81 |
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82 | // Partial
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83 | ////////////////////////////////////////////////////////////////////////////
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84 | double t_pppParam::partial(t_satData* satData, bool phase) {
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85 |
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86 | Tracer tracer("t_pppParam::partial");
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87 |
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88 | // Coordinates
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89 | // -----------
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90 | if (type == CRD_X) {
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91 | return (xx - satData->xx(1)) / satData->rho;
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92 | }
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93 | else if (type == CRD_Y) {
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94 | return (xx - satData->xx(2)) / satData->rho;
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95 | }
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96 | else if (type == CRD_Z) {
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97 | return (xx - satData->xx(3)) / satData->rho;
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98 | }
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99 |
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100 | // Receiver Clocks
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101 | // ---------------
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102 | else if (type == RECCLK) {
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103 | return 1.0;
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104 | }
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105 |
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106 | // Troposphere
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107 | // -----------
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108 | else if (type == TROPO) {
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109 | return 1.0 / sin(satData->eleSat);
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110 | }
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111 |
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112 | // Glonass Offset
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113 | // --------------
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114 | else if (type == GLONASS_OFFSET) {
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115 | if (satData->prn[0] == 'R') {
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116 | return 1.0;
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117 | }
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118 | else {
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119 | return 0.0;
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120 | }
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121 | }
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122 |
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123 | // Galileo Offset
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124 | // --------------
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125 | else if (type == GALILEO_OFFSET) {
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126 | if (satData->prn[0] == 'E') {
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127 | return 1.0;
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128 | }
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129 | else {
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130 | return 0.0;
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131 | }
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132 | }
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133 |
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134 | // Ambiguities
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135 | // -----------
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136 | else if (type == AMB_L3) {
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137 | if (phase && satData->prn == prn) {
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138 | return 1.0;
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139 | }
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140 | else {
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141 | return 0.0;
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142 | }
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143 | }
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144 |
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145 | // Default return
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146 | // --------------
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147 | return 0.0;
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148 | }
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149 |
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150 | // Constructor
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151 | ////////////////////////////////////////////////////////////////////////////
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152 | t_pppFilter::t_pppFilter(t_pppClient* pppClient) {
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153 |
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154 | _pppClient = pppClient;
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155 | _tides = new t_tides();
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156 |
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157 | // Antenna Name, ANTEX File
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158 | // ------------------------
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159 | _antex = 0;
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160 | if (!OPT->_antexFileName.empty()) {
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161 | _antex = new bncAntex(OPT->_antexFileName.c_str());
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162 | }
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163 |
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164 | // Bancroft Coordinates
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165 | // --------------------
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166 | _xcBanc.ReSize(4); _xcBanc = 0.0;
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167 | _ellBanc.ReSize(3); _ellBanc = 0.0;
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168 |
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169 | // Save copy of data (used in outlier detection)
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170 | // ---------------------------------------------
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171 | _epoData_sav = new t_epoData();
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172 |
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173 | // Some statistics
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174 | // ---------------
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175 | _neu.ReSize(3); _neu = 0.0;
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176 | _numSat = 0;
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177 | _pDop = 0.0;
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178 | }
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179 |
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180 | // Destructor
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181 | ////////////////////////////////////////////////////////////////////////////
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182 | t_pppFilter::~t_pppFilter() {
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183 | delete _tides;
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184 | delete _antex;
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185 | for (int iPar = 1; iPar <= _params.size(); iPar++) {
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186 | delete _params[iPar-1];
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187 | }
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188 | for (int iPar = 1; iPar <= _params_sav.size(); iPar++) {
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189 | delete _params_sav[iPar-1];
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190 | }
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191 | delete _epoData_sav;
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192 | }
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193 |
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194 | // Reset Parameters and Variance-Covariance Matrix
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195 | ////////////////////////////////////////////////////////////////////////////
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196 | void t_pppFilter::reset() {
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197 |
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198 | Tracer tracer("t_pppFilter::reset");
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199 |
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200 | double lastTrp = 0.0;
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201 | for (int ii = 0; ii < _params.size(); ii++) {
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202 | t_pppParam* pp = _params[ii];
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203 | if (pp->type == t_pppParam::TROPO) {
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204 | lastTrp = pp->xx;
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205 | }
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206 | delete pp;
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207 | }
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208 | _params.clear();
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209 |
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210 | int nextPar = 0;
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211 | _params.push_back(new t_pppParam(t_pppParam::CRD_X, ++nextPar, ""));
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212 | _params.push_back(new t_pppParam(t_pppParam::CRD_Y, ++nextPar, ""));
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213 | _params.push_back(new t_pppParam(t_pppParam::CRD_Z, ++nextPar, ""));
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214 | _params.push_back(new t_pppParam(t_pppParam::RECCLK, ++nextPar, ""));
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215 | if (OPT->estTrp()) {
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216 | _params.push_back(new t_pppParam(t_pppParam::TROPO, ++nextPar, ""));
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217 | }
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218 | if (OPT->useSystem('R')) {
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219 | _params.push_back(new t_pppParam(t_pppParam::GLONASS_OFFSET, ++nextPar, ""));
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220 | }
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221 | if (OPT->useSystem('E')) {
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222 | _params.push_back(new t_pppParam(t_pppParam::GALILEO_OFFSET, ++nextPar, ""));
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223 | }
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224 |
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225 | _QQ.ReSize(_params.size());
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226 | _QQ = 0.0;
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227 | for (int iPar = 1; iPar <= _params.size(); iPar++) {
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228 | t_pppParam* pp = _params[iPar-1];
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229 | pp->xx = 0.0;
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230 | if (pp->isCrd()) {
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231 | _QQ(iPar,iPar) = OPT->_aprSigCrd(1) * OPT->_aprSigCrd(1);
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232 | }
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233 | else if (pp->type == t_pppParam::RECCLK) {
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234 | _QQ(iPar,iPar) = OPT->_noiseClk * OPT->_noiseClk;
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235 | }
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236 | else if (pp->type == t_pppParam::TROPO) {
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237 | _QQ(iPar,iPar) = OPT->_aprSigTrp * OPT->_aprSigTrp;
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238 | pp->xx = lastTrp;
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239 | }
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240 | else if (pp->type == t_pppParam::GLONASS_OFFSET) {
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241 | _QQ(iPar,iPar) = 1000.0 * 1000.0;
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242 | }
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243 | else if (pp->type == t_pppParam::GALILEO_OFFSET) {
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244 | _QQ(iPar,iPar) = 1000.0 * 1000.0;
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245 | }
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246 | }
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247 | }
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248 |
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249 | // Bancroft Solution
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250 | ////////////////////////////////////////////////////////////////////////////
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251 | t_irc t_pppFilter::cmpBancroft(t_epoData* epoData) {
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252 |
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253 | Tracer tracer("t_pppFilter::cmpBancroft");
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254 |
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255 | if (int(epoData->sizeSys('G')) < OPT->_minObs) {
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256 | LOG << "t_pppFilter::cmpBancroft: not enough data\n";
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257 | return failure;
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258 | }
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259 |
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260 | Matrix BB(epoData->sizeSys('G'), 4);
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261 |
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262 | QMapIterator<QString, t_satData*> it(epoData->satData);
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263 | int iObsBanc = 0;
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264 | while (it.hasNext()) {
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265 | it.next();
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266 | t_satData* satData = it.value();
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267 | if (satData->system() == 'G') {
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268 | ++iObsBanc;
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269 | QString prn = it.key();
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270 | BB(iObsBanc, 1) = satData->xx(1);
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271 | BB(iObsBanc, 2) = satData->xx(2);
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272 | BB(iObsBanc, 3) = satData->xx(3);
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273 | BB(iObsBanc, 4) = satData->P3 + satData->clk;
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274 | }
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275 | }
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276 |
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277 | bancroft(BB, _xcBanc);
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278 |
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279 | // Ellipsoidal Coordinates
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280 | // ------------------------
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281 | xyz2ell(_xcBanc.data(), _ellBanc.data());
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282 |
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283 | // Compute Satellite Elevations
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284 | // ----------------------------
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285 | QMutableMapIterator<QString, t_satData*> im(epoData->satData);
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286 | while (im.hasNext()) {
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287 | im.next();
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288 | t_satData* satData = im.value();
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289 | cmpEle(satData);
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290 | if (satData->eleSat < OPT->_minEle) {
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291 | delete satData;
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292 | im.remove();
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293 | }
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294 | }
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295 |
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296 | return success;
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297 | }
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298 |
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299 | // Computed Value
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300 | ////////////////////////////////////////////////////////////////////////////
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301 | double t_pppFilter::cmpValue(t_satData* satData, bool phase) {
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302 |
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303 | Tracer tracer("t_pppFilter::cmpValue");
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304 |
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305 | ColumnVector xRec(3);
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306 | xRec(1) = x();
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307 | xRec(2) = y();
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308 | xRec(3) = z();
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309 |
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310 | double rho0 = (satData->xx - xRec).norm_Frobenius();
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311 | double dPhi = t_CST::omega * rho0 / t_CST::c;
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312 |
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313 | xRec(1) = x() * cos(dPhi) - y() * sin(dPhi);
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314 | xRec(2) = y() * cos(dPhi) + x() * sin(dPhi);
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315 | xRec(3) = z();
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316 |
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317 | xRec += _tides->displacement(_time, xRec);
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318 |
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319 | satData->rho = (satData->xx - xRec).norm_Frobenius();
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320 |
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321 | double tropDelay = delay_saast(satData->eleSat) +
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322 | trp() / sin(satData->eleSat);
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323 |
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324 | double wind = 0.0;
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325 | if (phase) {
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326 | wind = windUp(satData->prn, satData->xx, xRec) * satData->lambda3;
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327 | }
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328 |
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329 | double offset = 0.0;
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330 | if (satData->prn[0] == 'R') {
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331 | offset = Glonass_offset();
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332 | }
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333 | else if (satData->prn[0] == 'E') {
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334 | offset = Galileo_offset();
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335 | }
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336 |
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337 | double phaseCenter = 0.0;
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338 | if (_antex) {
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339 | bool found;
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340 | phaseCenter = _antex->rcvCorr(OPT->_antNameRover, t_frequency::G1,
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341 | satData->eleSat, satData->azSat, found);
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342 | if (!found) {
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343 | LOG << "ANTEX: antenna >" << OPT->_antNameRover << "< not found\n";
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344 | }
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345 | }
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346 |
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347 | double antennaOffset = 0.0;
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348 | double cosa = cos(satData->azSat);
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349 | double sina = sin(satData->azSat);
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350 | double cose = cos(satData->eleSat);
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351 | double sine = sin(satData->eleSat);
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352 | antennaOffset = -OPT->_neuEccRover(1) * cosa*cose
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353 | -OPT->_neuEccRover(2) * sina*cose
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354 | -OPT->_neuEccRover(3) * sine;
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355 |
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356 | return satData->rho + phaseCenter + antennaOffset + clk()
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357 | + offset - satData->clk + tropDelay + wind;
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358 | }
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359 |
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360 | // Tropospheric Model (Saastamoinen)
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361 | ////////////////////////////////////////////////////////////////////////////
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362 | double t_pppFilter::delay_saast(double Ele) {
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363 |
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364 | Tracer tracer("t_pppFilter::delay_saast");
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365 |
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366 | double xyz[3];
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367 | xyz[0] = x();
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368 | xyz[1] = y();
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369 | xyz[2] = z();
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370 | double ell[3];
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371 | xyz2ell(xyz, ell);
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372 | double height = ell[2];
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373 |
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374 | double pp = 1013.25 * pow(1.0 - 2.26e-5 * height, 5.225);
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375 | double TT = 18.0 - height * 0.0065 + 273.15;
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376 | double hh = 50.0 * exp(-6.396e-4 * height);
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377 | double ee = hh / 100.0 * exp(-37.2465 + 0.213166*TT - 0.000256908*TT*TT);
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378 |
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379 | double h_km = height / 1000.0;
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380 |
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381 | if (h_km < 0.0) h_km = 0.0;
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382 | if (h_km > 5.0) h_km = 5.0;
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383 | int ii = int(h_km + 1);
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384 | double href = ii - 1;
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385 |
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386 | double bCor[6];
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387 | bCor[0] = 1.156;
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388 | bCor[1] = 1.006;
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389 | bCor[2] = 0.874;
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390 | bCor[3] = 0.757;
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391 | bCor[4] = 0.654;
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392 | bCor[5] = 0.563;
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393 |
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394 | double BB = bCor[ii-1] + (bCor[ii]-bCor[ii-1]) * (h_km - href);
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395 |
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396 | double zen = M_PI/2.0 - Ele;
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397 |
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398 | return (0.002277/cos(zen)) * (pp + ((1255.0/TT)+0.05)*ee - BB*(tan(zen)*tan(zen)));
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399 | }
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400 |
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401 | // Prediction Step of the Filter
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402 | ////////////////////////////////////////////////////////////////////////////
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403 | void t_pppFilter::predict(int iPhase, t_epoData* epoData) {
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404 |
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405 | Tracer tracer("t_pppFilter::predict");
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406 |
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407 | if (iPhase == 0) {
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408 |
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409 | const double maxSolGap = 0.0;
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410 |
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411 | bool firstCrd = false;
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412 | if (!_lastTimeOK.valid() || (maxSolGap > 0.0 && _time - _lastTimeOK > maxSolGap)) {
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413 | firstCrd = true;
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414 | _startTime = epoData->tt;
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415 | reset();
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416 | }
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417 |
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418 | // Use different white noise for Quick-Start mode
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419 | // ----------------------------------------------
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420 | double sigCrdP_used = OPT->_noiseCrd(1);
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421 | if ( OPT->_seedingTime > 0.0 && OPT->_seedingTime > (epoData->tt - _startTime) ) {
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422 | sigCrdP_used = 0.0;
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423 | }
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424 |
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425 | // Predict Parameter values, add white noise
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426 | // -----------------------------------------
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427 | for (int iPar = 1; iPar <= _params.size(); iPar++) {
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428 | t_pppParam* pp = _params[iPar-1];
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429 |
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430 | // Coordinates
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431 | // -----------
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432 | if (pp->type == t_pppParam::CRD_X) {
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433 | if (firstCrd) {
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434 | if (OPT->xyzAprRoverSet()) {
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435 | pp->xx = OPT->_xyzAprRover[0];
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436 | }
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437 | else {
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438 | pp->xx = _xcBanc(1);
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439 | }
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440 | }
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441 | _QQ(iPar,iPar) += sigCrdP_used * sigCrdP_used;
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442 | }
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443 | else if (pp->type == t_pppParam::CRD_Y) {
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444 | if (firstCrd) {
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445 | if (OPT->xyzAprRoverSet()) {
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446 | pp->xx = OPT->_xyzAprRover[1];
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447 | }
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448 | else {
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449 | pp->xx = _xcBanc(2);
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450 | }
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451 | }
|
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452 | _QQ(iPar,iPar) += sigCrdP_used * sigCrdP_used;
|
---|
453 | }
|
---|
454 | else if (pp->type == t_pppParam::CRD_Z) {
|
---|
455 | if (firstCrd) {
|
---|
456 | if (OPT->xyzAprRoverSet()) {
|
---|
457 | pp->xx = OPT->_xyzAprRover[2];
|
---|
458 | }
|
---|
459 | else {
|
---|
460 | pp->xx = _xcBanc(3);
|
---|
461 | }
|
---|
462 | }
|
---|
463 | _QQ(iPar,iPar) += sigCrdP_used * sigCrdP_used;
|
---|
464 | }
|
---|
465 |
|
---|
466 | // Receiver Clocks
|
---|
467 | // ---------------
|
---|
468 | else if (pp->type == t_pppParam::RECCLK) {
|
---|
469 | pp->xx = _xcBanc(4);
|
---|
470 | for (int jj = 1; jj <= _params.size(); jj++) {
|
---|
471 | _QQ(iPar, jj) = 0.0;
|
---|
472 | }
|
---|
473 | _QQ(iPar,iPar) = OPT->_noiseClk * OPT->_noiseClk;
|
---|
474 | }
|
---|
475 |
|
---|
476 | // Tropospheric Delay
|
---|
477 | // ------------------
|
---|
478 | else if (pp->type == t_pppParam::TROPO) {
|
---|
479 | _QQ(iPar,iPar) += OPT->_noiseTrp * OPT->_noiseTrp;
|
---|
480 | }
|
---|
481 |
|
---|
482 | // Glonass Offset
|
---|
483 | // --------------
|
---|
484 | else if (pp->type == t_pppParam::GLONASS_OFFSET) {
|
---|
485 | pp->xx = 0.0;
|
---|
486 | for (int jj = 1; jj <= _params.size(); jj++) {
|
---|
487 | _QQ(iPar, jj) = 0.0;
|
---|
488 | }
|
---|
489 | _QQ(iPar,iPar) = 1000.0 * 1000.0;
|
---|
490 | }
|
---|
491 |
|
---|
492 | // Galileo Offset
|
---|
493 | // --------------
|
---|
494 | else if (pp->type == t_pppParam::GALILEO_OFFSET) {
|
---|
495 | _QQ(iPar,iPar) += 0.1 * 0.1;
|
---|
496 | }
|
---|
497 | }
|
---|
498 | }
|
---|
499 |
|
---|
500 | // Add New Ambiguities if necessary
|
---|
501 | // --------------------------------
|
---|
502 | if (OPT->ambLCs('G').size() || OPT->ambLCs('R').size() || OPT->ambLCs('E').size()) {
|
---|
503 |
|
---|
504 | // Make a copy of QQ and xx, set parameter indices
|
---|
505 | // -----------------------------------------------
|
---|
506 | SymmetricMatrix QQ_old = _QQ;
|
---|
507 |
|
---|
508 | for (int iPar = 1; iPar <= _params.size(); iPar++) {
|
---|
509 | _params[iPar-1]->index_old = _params[iPar-1]->index;
|
---|
510 | _params[iPar-1]->index = 0;
|
---|
511 | }
|
---|
512 |
|
---|
513 | // Remove Ambiguity Parameters without observations
|
---|
514 | // ------------------------------------------------
|
---|
515 | int iPar = 0;
|
---|
516 | QMutableVectorIterator<t_pppParam*> im(_params);
|
---|
517 | while (im.hasNext()) {
|
---|
518 | t_pppParam* par = im.next();
|
---|
519 | bool removed = false;
|
---|
520 | if (par->type == t_pppParam::AMB_L3) {
|
---|
521 | if (epoData->satData.find(par->prn) == epoData->satData.end()) {
|
---|
522 | removed = true;
|
---|
523 | delete par;
|
---|
524 | im.remove();
|
---|
525 | }
|
---|
526 | }
|
---|
527 | if (! removed) {
|
---|
528 | ++iPar;
|
---|
529 | par->index = iPar;
|
---|
530 | }
|
---|
531 | }
|
---|
532 |
|
---|
533 | // Add new ambiguity parameters
|
---|
534 | // ----------------------------
|
---|
535 | QMapIterator<QString, t_satData*> it(epoData->satData);
|
---|
536 | while (it.hasNext()) {
|
---|
537 | it.next();
|
---|
538 | t_satData* satData = it.value();
|
---|
539 | addAmb(satData);
|
---|
540 | }
|
---|
541 |
|
---|
542 | int nPar = _params.size();
|
---|
543 | _QQ.ReSize(nPar); _QQ = 0.0;
|
---|
544 | for (int i1 = 1; i1 <= nPar; i1++) {
|
---|
545 | t_pppParam* p1 = _params[i1-1];
|
---|
546 | if (p1->index_old != 0) {
|
---|
547 | _QQ(p1->index, p1->index) = QQ_old(p1->index_old, p1->index_old);
|
---|
548 | for (int i2 = 1; i2 <= nPar; i2++) {
|
---|
549 | t_pppParam* p2 = _params[i2-1];
|
---|
550 | if (p2->index_old != 0) {
|
---|
551 | _QQ(p1->index, p2->index) = QQ_old(p1->index_old, p2->index_old);
|
---|
552 | }
|
---|
553 | }
|
---|
554 | }
|
---|
555 | }
|
---|
556 |
|
---|
557 | for (int ii = 1; ii <= nPar; ii++) {
|
---|
558 | t_pppParam* par = _params[ii-1];
|
---|
559 | if (par->index_old == 0) {
|
---|
560 | _QQ(par->index, par->index) = OPT->_aprSigAmb * OPT->_aprSigAmb;
|
---|
561 | }
|
---|
562 | par->index_old = par->index;
|
---|
563 | }
|
---|
564 | }
|
---|
565 | }
|
---|
566 |
|
---|
567 | // Update Step of the Filter (currently just a single-epoch solution)
|
---|
568 | ////////////////////////////////////////////////////////////////////////////
|
---|
569 | t_irc t_pppFilter::update(t_epoData* epoData) {
|
---|
570 |
|
---|
571 | Tracer tracer("t_pppFilter::update");
|
---|
572 |
|
---|
573 | _time = epoData->tt; // current epoch time
|
---|
574 |
|
---|
575 | if (OPT->useOrbClkCorr()) {
|
---|
576 | LOG << "Precise Point Positioning of Epoch " << _time.timestr(1)
|
---|
577 | << "\n---------------------------------------------------------------\n";
|
---|
578 | }
|
---|
579 | else {
|
---|
580 | LOG << "Single Point Positioning of Epoch " << _time.timestr(1)
|
---|
581 | << "\n--------------------------------------------------------------\n";
|
---|
582 | }
|
---|
583 |
|
---|
584 | // Outlier Detection Loop
|
---|
585 | // ----------------------
|
---|
586 | if (update_p(epoData) != success) {
|
---|
587 | return failure;
|
---|
588 | }
|
---|
589 |
|
---|
590 | // Set Solution Vector
|
---|
591 | // -------------------
|
---|
592 | LOG.setf(ios::fixed);
|
---|
593 | QVectorIterator<t_pppParam*> itPar(_params);
|
---|
594 | while (itPar.hasNext()) {
|
---|
595 | t_pppParam* par = itPar.next();
|
---|
596 | if (par->type == t_pppParam::RECCLK) {
|
---|
597 | LOG << "\n clk = " << setw(10) << setprecision(3) << par->xx
|
---|
598 | << " +- " << setw(6) << setprecision(3)
|
---|
599 | << sqrt(_QQ(par->index,par->index));
|
---|
600 | }
|
---|
601 | else if (par->type == t_pppParam::AMB_L3) {
|
---|
602 | ++par->numEpo;
|
---|
603 | LOG << "\n amb " << par->prn.toAscii().data() << " = "
|
---|
604 | << setw(10) << setprecision(3) << par->xx
|
---|
605 | << " +- " << setw(6) << setprecision(3)
|
---|
606 | << sqrt(_QQ(par->index,par->index))
|
---|
607 | << " nEpo = " << par->numEpo;
|
---|
608 | }
|
---|
609 | else if (par->type == t_pppParam::TROPO) {
|
---|
610 | double aprTrp = delay_saast(M_PI/2.0);
|
---|
611 | LOG << "\n trp = " << par->prn.toAscii().data()
|
---|
612 | << setw(7) << setprecision(3) << aprTrp << " "
|
---|
613 | << setw(6) << setprecision(3) << showpos << par->xx << noshowpos
|
---|
614 | << " +- " << setw(6) << setprecision(3)
|
---|
615 | << sqrt(_QQ(par->index,par->index));
|
---|
616 | }
|
---|
617 | else if (par->type == t_pppParam::GLONASS_OFFSET) {
|
---|
618 | LOG << "\n offGlo = " << setw(10) << setprecision(3) << par->xx
|
---|
619 | << " +- " << setw(6) << setprecision(3)
|
---|
620 | << sqrt(_QQ(par->index,par->index));
|
---|
621 | }
|
---|
622 | else if (par->type == t_pppParam::GALILEO_OFFSET) {
|
---|
623 | LOG << "\n offGal = " << setw(10) << setprecision(3) << par->xx
|
---|
624 | << " +- " << setw(6) << setprecision(3)
|
---|
625 | << sqrt(_QQ(par->index,par->index));
|
---|
626 | }
|
---|
627 | }
|
---|
628 |
|
---|
629 | LOG << endl << endl;
|
---|
630 |
|
---|
631 | // Compute dilution of precision
|
---|
632 | // -----------------------------
|
---|
633 | cmpDOP(epoData);
|
---|
634 |
|
---|
635 | // Final Message (both log file and screen)
|
---|
636 | // ----------------------------------------
|
---|
637 | LOG << OPT->_roverName << " PPP "
|
---|
638 | << epoData->tt.timestr(1) << " " << epoData->sizeAll() << " "
|
---|
639 | << setw(14) << setprecision(3) << x() << " +- "
|
---|
640 | << setw(6) << setprecision(3) << sqrt(_QQ(1,1)) << " "
|
---|
641 | << setw(14) << setprecision(3) << y() << " +- "
|
---|
642 | << setw(6) << setprecision(3) << sqrt(_QQ(2,2)) << " "
|
---|
643 | << setw(14) << setprecision(3) << z() << " +- "
|
---|
644 | << setw(6) << setprecision(3) << sqrt(_QQ(3,3));
|
---|
645 |
|
---|
646 | // NEU Output
|
---|
647 | // ----------
|
---|
648 | if (OPT->xyzAprRoverSet()) {
|
---|
649 | double xyz[3];
|
---|
650 | xyz[0] = x() - OPT->_xyzAprRover[0];
|
---|
651 | xyz[1] = y() - OPT->_xyzAprRover[1];
|
---|
652 | xyz[2] = z() - OPT->_xyzAprRover[2];
|
---|
653 |
|
---|
654 | double ellRef[3];
|
---|
655 | xyz2ell(OPT->_xyzAprRover.data(), ellRef);
|
---|
656 | xyz2neu(ellRef, xyz, _neu.data());
|
---|
657 |
|
---|
658 | LOG << " NEU "
|
---|
659 | << setw(8) << setprecision(3) << _neu[0] << " "
|
---|
660 | << setw(8) << setprecision(3) << _neu[1] << " "
|
---|
661 | << setw(8) << setprecision(3) << _neu[2] << endl << endl;
|
---|
662 | }
|
---|
663 | else {
|
---|
664 | LOG << endl << endl;
|
---|
665 | }
|
---|
666 |
|
---|
667 | _lastTimeOK = _time; // remember time of last successful update
|
---|
668 | return success;
|
---|
669 | }
|
---|
670 |
|
---|
671 | // Outlier Detection
|
---|
672 | ////////////////////////////////////////////////////////////////////////////
|
---|
673 | QString t_pppFilter::outlierDetection(int iPhase, const ColumnVector& vv,
|
---|
674 | QMap<QString, t_satData*>& satData) {
|
---|
675 |
|
---|
676 | Tracer tracer("t_pppFilter::outlierDetection");
|
---|
677 |
|
---|
678 | QString prnGPS;
|
---|
679 | QString prnGlo;
|
---|
680 | double maxResGPS = 0.0;
|
---|
681 | double maxResGlo = 0.0;
|
---|
682 | findMaxRes(vv, satData, prnGPS, prnGlo, maxResGPS, maxResGlo);
|
---|
683 |
|
---|
684 | if (iPhase == 1) {
|
---|
685 | if (maxResGlo > 2.98 * OPT->_maxResL1) {
|
---|
686 | LOG << "Outlier Phase " << prnGlo.toAscii().data() << ' ' << maxResGlo << endl;
|
---|
687 | return prnGlo;
|
---|
688 | }
|
---|
689 | else if (maxResGPS > 2.98 * OPT->_maxResL1) {
|
---|
690 | LOG << "Outlier Phase " << prnGPS.toAscii().data() << ' ' << maxResGPS << endl;
|
---|
691 | return prnGPS;
|
---|
692 | }
|
---|
693 | }
|
---|
694 | else if (iPhase == 0 && maxResGPS > 2.98 * OPT->_maxResC1) {
|
---|
695 | LOG << "Outlier Code " << prnGPS.toAscii().data() << ' ' << maxResGPS << endl;
|
---|
696 | return prnGPS;
|
---|
697 | }
|
---|
698 |
|
---|
699 | return QString();
|
---|
700 | }
|
---|
701 |
|
---|
702 | // Phase Wind-Up Correction
|
---|
703 | ///////////////////////////////////////////////////////////////////////////
|
---|
704 | double t_pppFilter::windUp(const QString& prn, const ColumnVector& rSat,
|
---|
705 | const ColumnVector& rRec) {
|
---|
706 |
|
---|
707 | Tracer tracer("t_pppFilter::windUp");
|
---|
708 |
|
---|
709 | double Mjd = _time.mjd() + _time.daysec() / 86400.0;
|
---|
710 |
|
---|
711 | // First time - initialize to zero
|
---|
712 | // -------------------------------
|
---|
713 | if (!_windUpTime.contains(prn)) {
|
---|
714 | _windUpSum[prn] = 0.0;
|
---|
715 | }
|
---|
716 |
|
---|
717 | // Compute the correction for new time
|
---|
718 | // -----------------------------------
|
---|
719 | if (!_windUpTime.contains(prn) || _windUpTime[prn] != Mjd) {
|
---|
720 | _windUpTime[prn] = Mjd;
|
---|
721 |
|
---|
722 | // Unit Vector GPS Satellite --> Receiver
|
---|
723 | // --------------------------------------
|
---|
724 | ColumnVector rho = rRec - rSat;
|
---|
725 | rho /= rho.norm_Frobenius();
|
---|
726 |
|
---|
727 | // GPS Satellite unit Vectors sz, sy, sx
|
---|
728 | // -------------------------------------
|
---|
729 | ColumnVector sz = -rSat / rSat.norm_Frobenius();
|
---|
730 |
|
---|
731 | ColumnVector xSun = t_astro::Sun(Mjd);
|
---|
732 | xSun /= xSun.norm_Frobenius();
|
---|
733 |
|
---|
734 | ColumnVector sy = crossproduct(sz, xSun);
|
---|
735 | ColumnVector sx = crossproduct(sy, sz);
|
---|
736 |
|
---|
737 | // Effective Dipole of the GPS Satellite Antenna
|
---|
738 | // ---------------------------------------------
|
---|
739 | ColumnVector dipSat = sx - rho * DotProduct(rho,sx)
|
---|
740 | - crossproduct(rho, sy);
|
---|
741 |
|
---|
742 | // Receiver unit Vectors rx, ry
|
---|
743 | // ----------------------------
|
---|
744 | ColumnVector rx(3);
|
---|
745 | ColumnVector ry(3);
|
---|
746 |
|
---|
747 | double recEll[3]; xyz2ell(rRec.data(), recEll) ;
|
---|
748 | double neu[3];
|
---|
749 |
|
---|
750 | neu[0] = 1.0;
|
---|
751 | neu[1] = 0.0;
|
---|
752 | neu[2] = 0.0;
|
---|
753 | neu2xyz(recEll, neu, rx.data());
|
---|
754 |
|
---|
755 | neu[0] = 0.0;
|
---|
756 | neu[1] = -1.0;
|
---|
757 | neu[2] = 0.0;
|
---|
758 | neu2xyz(recEll, neu, ry.data());
|
---|
759 |
|
---|
760 | // Effective Dipole of the Receiver Antenna
|
---|
761 | // ----------------------------------------
|
---|
762 | ColumnVector dipRec = rx - rho * DotProduct(rho,rx)
|
---|
763 | + crossproduct(rho, ry);
|
---|
764 |
|
---|
765 | // Resulting Effect
|
---|
766 | // ----------------
|
---|
767 | double alpha = DotProduct(dipSat,dipRec) /
|
---|
768 | (dipSat.norm_Frobenius() * dipRec.norm_Frobenius());
|
---|
769 |
|
---|
770 | if (alpha > 1.0) alpha = 1.0;
|
---|
771 | if (alpha < -1.0) alpha = -1.0;
|
---|
772 |
|
---|
773 | double dphi = acos(alpha) / 2.0 / M_PI; // in cycles
|
---|
774 |
|
---|
775 | if ( DotProduct(rho, crossproduct(dipSat, dipRec)) < 0.0 ) {
|
---|
776 | dphi = -dphi;
|
---|
777 | }
|
---|
778 |
|
---|
779 | _windUpSum[prn] = floor(_windUpSum[prn] - dphi + 0.5) + dphi;
|
---|
780 | }
|
---|
781 |
|
---|
782 | return _windUpSum[prn];
|
---|
783 | }
|
---|
784 |
|
---|
785 | //
|
---|
786 | ///////////////////////////////////////////////////////////////////////////
|
---|
787 | void t_pppFilter::cmpEle(t_satData* satData) {
|
---|
788 | Tracer tracer("t_pppFilter::cmpEle");
|
---|
789 | ColumnVector rr = satData->xx - _xcBanc.Rows(1,3);
|
---|
790 | double rho = rr.norm_Frobenius();
|
---|
791 |
|
---|
792 | double neu[3];
|
---|
793 | xyz2neu(_ellBanc.data(), rr.data(), neu);
|
---|
794 |
|
---|
795 | satData->eleSat = acos( sqrt(neu[0]*neu[0] + neu[1]*neu[1]) / rho );
|
---|
796 | if (neu[2] < 0) {
|
---|
797 | satData->eleSat *= -1.0;
|
---|
798 | }
|
---|
799 | satData->azSat = atan2(neu[1], neu[0]);
|
---|
800 | }
|
---|
801 |
|
---|
802 | //
|
---|
803 | ///////////////////////////////////////////////////////////////////////////
|
---|
804 | void t_pppFilter::addAmb(t_satData* satData) {
|
---|
805 | Tracer tracer("t_pppFilter::addAmb");
|
---|
806 | bool found = false;
|
---|
807 | for (int iPar = 1; iPar <= _params.size(); iPar++) {
|
---|
808 | if (_params[iPar-1]->type == t_pppParam::AMB_L3 &&
|
---|
809 | _params[iPar-1]->prn == satData->prn) {
|
---|
810 | found = true;
|
---|
811 | break;
|
---|
812 | }
|
---|
813 | }
|
---|
814 | if (!found) {
|
---|
815 | t_pppParam* par = new t_pppParam(t_pppParam::AMB_L3,
|
---|
816 | _params.size()+1, satData->prn);
|
---|
817 | _params.push_back(par);
|
---|
818 | par->xx = satData->L3 - cmpValue(satData, true);
|
---|
819 | }
|
---|
820 | }
|
---|
821 |
|
---|
822 | //
|
---|
823 | ///////////////////////////////////////////////////////////////////////////
|
---|
824 | void t_pppFilter::addObs(int iPhase, unsigned& iObs, t_satData* satData,
|
---|
825 | Matrix& AA, ColumnVector& ll, DiagonalMatrix& PP) {
|
---|
826 |
|
---|
827 | Tracer tracer("t_pppFilter::addObs");
|
---|
828 |
|
---|
829 | const double ELEWGHT = 20.0;
|
---|
830 | double ellWgtCoef = 1.0;
|
---|
831 | double eleD = satData->eleSat * 180.0 / M_PI;
|
---|
832 | if (eleD < ELEWGHT) {
|
---|
833 | ellWgtCoef = 1.5 - 0.5 / (ELEWGHT - 10.0) * (eleD - 10.0);
|
---|
834 | }
|
---|
835 |
|
---|
836 | // Remember Observation Index
|
---|
837 | // --------------------------
|
---|
838 | ++iObs;
|
---|
839 | satData->obsIndex = iObs;
|
---|
840 |
|
---|
841 | // Phase Observations
|
---|
842 | // ------------------
|
---|
843 | if (iPhase == 1) {
|
---|
844 | ll(iObs) = satData->L3 - cmpValue(satData, true);
|
---|
845 | double sigL3 = 2.98 * OPT->_sigmaL1;
|
---|
846 | if (satData->system() == 'R') {
|
---|
847 | sigL3 *= GLONASS_WEIGHT_FACTOR;
|
---|
848 | }
|
---|
849 | PP(iObs,iObs) = 1.0 / (sigL3 * sigL3) / (ellWgtCoef * ellWgtCoef);
|
---|
850 | for (int iPar = 1; iPar <= _params.size(); iPar++) {
|
---|
851 | if (_params[iPar-1]->type == t_pppParam::AMB_L3 &&
|
---|
852 | _params[iPar-1]->prn == satData->prn) {
|
---|
853 | ll(iObs) -= _params[iPar-1]->xx;
|
---|
854 | }
|
---|
855 | AA(iObs, iPar) = _params[iPar-1]->partial(satData, true);
|
---|
856 | }
|
---|
857 | }
|
---|
858 |
|
---|
859 | // Code Observations
|
---|
860 | // -----------------
|
---|
861 | else {
|
---|
862 | double sigP3 = 2.98 * OPT->_sigmaC1;
|
---|
863 | ll(iObs) = satData->P3 - cmpValue(satData, false);
|
---|
864 | PP(iObs,iObs) = 1.0 / (sigP3 * sigP3) / (ellWgtCoef * ellWgtCoef);
|
---|
865 | for (int iPar = 1; iPar <= _params.size(); iPar++) {
|
---|
866 | AA(iObs, iPar) = _params[iPar-1]->partial(satData, false);
|
---|
867 | }
|
---|
868 | }
|
---|
869 | }
|
---|
870 |
|
---|
871 | //
|
---|
872 | ///////////////////////////////////////////////////////////////////////////
|
---|
873 | QByteArray t_pppFilter::printRes(int iPhase, const ColumnVector& vv,
|
---|
874 | const QMap<QString, t_satData*>& satDataMap) {
|
---|
875 |
|
---|
876 | Tracer tracer("t_pppFilter::printRes");
|
---|
877 |
|
---|
878 | ostringstream str;
|
---|
879 | str.setf(ios::fixed);
|
---|
880 |
|
---|
881 | QMapIterator<QString, t_satData*> it(satDataMap);
|
---|
882 | while (it.hasNext()) {
|
---|
883 | it.next();
|
---|
884 | t_satData* satData = it.value();
|
---|
885 | if (satData->obsIndex != 0) {
|
---|
886 | str << _time.timestr(1)
|
---|
887 | << " RES " << satData->prn.toAscii().data()
|
---|
888 | << (iPhase ? " L3 " : " P3 ")
|
---|
889 | << setw(9) << setprecision(4) << vv(satData->obsIndex) << endl;
|
---|
890 | }
|
---|
891 | }
|
---|
892 |
|
---|
893 | return QByteArray(str.str().c_str());
|
---|
894 | }
|
---|
895 |
|
---|
896 | //
|
---|
897 | ///////////////////////////////////////////////////////////////////////////
|
---|
898 | void t_pppFilter::findMaxRes(const ColumnVector& vv,
|
---|
899 | const QMap<QString, t_satData*>& satData,
|
---|
900 | QString& prnGPS, QString& prnGlo,
|
---|
901 | double& maxResGPS, double& maxResGlo) {
|
---|
902 |
|
---|
903 | Tracer tracer("t_pppFilter::findMaxRes");
|
---|
904 |
|
---|
905 | maxResGPS = 0.0;
|
---|
906 | maxResGlo = 0.0;
|
---|
907 |
|
---|
908 | QMapIterator<QString, t_satData*> it(satData);
|
---|
909 | while (it.hasNext()) {
|
---|
910 | it.next();
|
---|
911 | t_satData* satData = it.value();
|
---|
912 | if (satData->obsIndex != 0) {
|
---|
913 | QString prn = satData->prn;
|
---|
914 | if (prn[0] == 'R') {
|
---|
915 | if (fabs(vv(satData->obsIndex)) > maxResGlo) {
|
---|
916 | maxResGlo = fabs(vv(satData->obsIndex));
|
---|
917 | prnGlo = prn;
|
---|
918 | }
|
---|
919 | }
|
---|
920 | else {
|
---|
921 | if (fabs(vv(satData->obsIndex)) > maxResGPS) {
|
---|
922 | maxResGPS = fabs(vv(satData->obsIndex));
|
---|
923 | prnGPS = prn;
|
---|
924 | }
|
---|
925 | }
|
---|
926 | }
|
---|
927 | }
|
---|
928 | }
|
---|
929 |
|
---|
930 | // Update Step (private - loop over outliers)
|
---|
931 | ////////////////////////////////////////////////////////////////////////////
|
---|
932 | t_irc t_pppFilter::update_p(t_epoData* epoData) {
|
---|
933 |
|
---|
934 | Tracer tracer("t_pppFilter::update_p");
|
---|
935 |
|
---|
936 | // Save Variance-Covariance Matrix, and Status Vector
|
---|
937 | // --------------------------------------------------
|
---|
938 | rememberState(epoData);
|
---|
939 |
|
---|
940 | QString lastOutlierPrn;
|
---|
941 |
|
---|
942 | // Try with all satellites, then with all minus one, etc.
|
---|
943 | // ------------------------------------------------------
|
---|
944 | while (selectSatellites(lastOutlierPrn, epoData->satData) == success) {
|
---|
945 |
|
---|
946 | QByteArray strResCode;
|
---|
947 | QByteArray strResPhase;
|
---|
948 |
|
---|
949 | // Bancroft Solution
|
---|
950 | // -----------------
|
---|
951 | if (cmpBancroft(epoData) != success) {
|
---|
952 | break;
|
---|
953 | }
|
---|
954 |
|
---|
955 | // First update using code observations, then phase observations
|
---|
956 | // -------------------------------------------------------------
|
---|
957 | bool usePhase = OPT->ambLCs('G').size() || OPT->ambLCs('R').size() ||
|
---|
958 | OPT->ambLCs('E').size();
|
---|
959 |
|
---|
960 | for (int iPhase = 0; iPhase <= (usePhase ? 1 : 0); iPhase++) {
|
---|
961 |
|
---|
962 | // Status Prediction
|
---|
963 | // -----------------
|
---|
964 | predict(iPhase, epoData);
|
---|
965 |
|
---|
966 | // Create First-Design Matrix
|
---|
967 | // --------------------------
|
---|
968 | unsigned nPar = _params.size();
|
---|
969 | unsigned nObs = 0;
|
---|
970 | if (iPhase == 0) {
|
---|
971 | nObs = epoData->sizeAll() - epoData->sizeSys('R'); // Glonass code not used
|
---|
972 | }
|
---|
973 | else {
|
---|
974 | nObs = epoData->sizeAll();
|
---|
975 | }
|
---|
976 |
|
---|
977 | // Prepare first-design Matrix, vector observed-computed
|
---|
978 | // -----------------------------------------------------
|
---|
979 | Matrix AA(nObs, nPar); // first design matrix
|
---|
980 | ColumnVector ll(nObs); // tems observed-computed
|
---|
981 | DiagonalMatrix PP(nObs); PP = 0.0;
|
---|
982 |
|
---|
983 | unsigned iObs = 0;
|
---|
984 | QMapIterator<QString, t_satData*> it(epoData->satData);
|
---|
985 | while (it.hasNext()) {
|
---|
986 | it.next();
|
---|
987 | t_satData* satData = it.value();
|
---|
988 | if (iPhase == 1 || satData->system() != 'R') {
|
---|
989 | QString prn = satData->prn;
|
---|
990 | addObs(iPhase, iObs, satData, AA, ll, PP);
|
---|
991 | }
|
---|
992 | }
|
---|
993 |
|
---|
994 | // Compute Filter Update
|
---|
995 | // ---------------------
|
---|
996 | ColumnVector dx(nPar); dx = 0.0;
|
---|
997 | kalman(AA, ll, PP, _QQ, dx);
|
---|
998 | ColumnVector vv = ll - AA * dx;
|
---|
999 |
|
---|
1000 | // Print Residuals
|
---|
1001 | // ---------------
|
---|
1002 | if (iPhase == 0) {
|
---|
1003 | strResCode = printRes(iPhase, vv, epoData->satData);
|
---|
1004 | }
|
---|
1005 | else {
|
---|
1006 | strResPhase = printRes(iPhase, vv, epoData->satData);
|
---|
1007 | }
|
---|
1008 |
|
---|
1009 | // Check the residuals
|
---|
1010 | // -------------------
|
---|
1011 | lastOutlierPrn = outlierDetection(iPhase, vv, epoData->satData);
|
---|
1012 |
|
---|
1013 | // No Outlier Detected
|
---|
1014 | // -------------------
|
---|
1015 | if (lastOutlierPrn.isEmpty()) {
|
---|
1016 |
|
---|
1017 | QVectorIterator<t_pppParam*> itPar(_params);
|
---|
1018 | while (itPar.hasNext()) {
|
---|
1019 | t_pppParam* par = itPar.next();
|
---|
1020 | par->xx += dx(par->index);
|
---|
1021 | }
|
---|
1022 |
|
---|
1023 | if (!usePhase || iPhase == 1) {
|
---|
1024 | if (_outlierGPS.size() > 0 || _outlierGlo.size() > 0) {
|
---|
1025 | LOG << "Neglected PRNs: ";
|
---|
1026 | if (!_outlierGPS.isEmpty()) {
|
---|
1027 | LOG << _outlierGPS.last().toAscii().data() << ' ';
|
---|
1028 | }
|
---|
1029 | QStringListIterator itGlo(_outlierGlo);
|
---|
1030 | while (itGlo.hasNext()) {
|
---|
1031 | QString prn = itGlo.next();
|
---|
1032 | LOG << prn.toAscii().data() << ' ';
|
---|
1033 | }
|
---|
1034 | }
|
---|
1035 | LOG << strResCode.data() << strResPhase.data();
|
---|
1036 |
|
---|
1037 | return success;
|
---|
1038 | }
|
---|
1039 | }
|
---|
1040 |
|
---|
1041 | // Outlier Found
|
---|
1042 | // -------------
|
---|
1043 | else {
|
---|
1044 | restoreState(epoData);
|
---|
1045 | break;
|
---|
1046 | }
|
---|
1047 |
|
---|
1048 | } // for iPhase
|
---|
1049 |
|
---|
1050 | } // while selectSatellites
|
---|
1051 |
|
---|
1052 | restoreState(epoData);
|
---|
1053 | return failure;
|
---|
1054 | }
|
---|
1055 |
|
---|
1056 | // Remeber Original State Vector and Variance-Covariance Matrix
|
---|
1057 | ////////////////////////////////////////////////////////////////////////////
|
---|
1058 | void t_pppFilter::rememberState(t_epoData* epoData) {
|
---|
1059 |
|
---|
1060 | _QQ_sav = _QQ;
|
---|
1061 |
|
---|
1062 | QVectorIterator<t_pppParam*> itSav(_params_sav);
|
---|
1063 | while (itSav.hasNext()) {
|
---|
1064 | t_pppParam* par = itSav.next();
|
---|
1065 | delete par;
|
---|
1066 | }
|
---|
1067 | _params_sav.clear();
|
---|
1068 |
|
---|
1069 | QVectorIterator<t_pppParam*> it(_params);
|
---|
1070 | while (it.hasNext()) {
|
---|
1071 | t_pppParam* par = it.next();
|
---|
1072 | _params_sav.push_back(new t_pppParam(*par));
|
---|
1073 | }
|
---|
1074 |
|
---|
1075 | _epoData_sav->deepCopy(epoData);
|
---|
1076 | }
|
---|
1077 |
|
---|
1078 | // Restore Original State Vector and Variance-Covariance Matrix
|
---|
1079 | ////////////////////////////////////////////////////////////////////////////
|
---|
1080 | void t_pppFilter::restoreState(t_epoData* epoData) {
|
---|
1081 |
|
---|
1082 | _QQ = _QQ_sav;
|
---|
1083 |
|
---|
1084 | QVectorIterator<t_pppParam*> it(_params);
|
---|
1085 | while (it.hasNext()) {
|
---|
1086 | t_pppParam* par = it.next();
|
---|
1087 | delete par;
|
---|
1088 | }
|
---|
1089 | _params.clear();
|
---|
1090 |
|
---|
1091 | QVectorIterator<t_pppParam*> itSav(_params_sav);
|
---|
1092 | while (itSav.hasNext()) {
|
---|
1093 | t_pppParam* par = itSav.next();
|
---|
1094 | _params.push_back(new t_pppParam(*par));
|
---|
1095 | }
|
---|
1096 |
|
---|
1097 | epoData->deepCopy(_epoData_sav);
|
---|
1098 | }
|
---|
1099 |
|
---|
1100 | //
|
---|
1101 | ////////////////////////////////////////////////////////////////////////////
|
---|
1102 | t_irc t_pppFilter::selectSatellites(const QString& lastOutlierPrn,
|
---|
1103 | QMap<QString, t_satData*>& satData) {
|
---|
1104 |
|
---|
1105 | // First Call
|
---|
1106 | // ----------
|
---|
1107 | if (lastOutlierPrn.isEmpty()) {
|
---|
1108 | _outlierGPS.clear();
|
---|
1109 | _outlierGlo.clear();
|
---|
1110 | return success;
|
---|
1111 | }
|
---|
1112 |
|
---|
1113 | // Second and next trials
|
---|
1114 | // ----------------------
|
---|
1115 | else {
|
---|
1116 |
|
---|
1117 | if (lastOutlierPrn[0] == 'R') {
|
---|
1118 | _outlierGlo << lastOutlierPrn;
|
---|
1119 | }
|
---|
1120 |
|
---|
1121 | // Remove all Glonass Outliers
|
---|
1122 | // ---------------------------
|
---|
1123 | QStringListIterator it(_outlierGlo);
|
---|
1124 | while (it.hasNext()) {
|
---|
1125 | QString prn = it.next();
|
---|
1126 | if (satData.contains(prn)) {
|
---|
1127 | delete satData.take(prn);
|
---|
1128 | }
|
---|
1129 | }
|
---|
1130 |
|
---|
1131 | if (lastOutlierPrn[0] == 'R') {
|
---|
1132 | _outlierGPS.clear();
|
---|
1133 | return success;
|
---|
1134 | }
|
---|
1135 |
|
---|
1136 | // GPS Outlier appeared for the first time - try to delete it
|
---|
1137 | // ----------------------------------------------------------
|
---|
1138 | if (_outlierGPS.indexOf(lastOutlierPrn) == -1) {
|
---|
1139 | _outlierGPS << lastOutlierPrn;
|
---|
1140 | if (satData.contains(lastOutlierPrn)) {
|
---|
1141 | delete satData.take(lastOutlierPrn);
|
---|
1142 | }
|
---|
1143 | return success;
|
---|
1144 | }
|
---|
1145 |
|
---|
1146 | }
|
---|
1147 |
|
---|
1148 | return failure;
|
---|
1149 | }
|
---|
1150 |
|
---|
1151 | //
|
---|
1152 | ////////////////////////////////////////////////////////////////////////////
|
---|
1153 | double lorentz(const ColumnVector& aa, const ColumnVector& bb) {
|
---|
1154 | return aa(1)*bb(1) + aa(2)*bb(2) + aa(3)*bb(3) - aa(4)*bb(4);
|
---|
1155 | }
|
---|
1156 |
|
---|
1157 | //
|
---|
1158 | ////////////////////////////////////////////////////////////////////////////
|
---|
1159 | void t_pppFilter::bancroft(const Matrix& BBpass, ColumnVector& pos) {
|
---|
1160 |
|
---|
1161 | if (pos.Nrows() != 4) {
|
---|
1162 | pos.ReSize(4);
|
---|
1163 | }
|
---|
1164 | pos = 0.0;
|
---|
1165 |
|
---|
1166 | for (int iter = 1; iter <= 2; iter++) {
|
---|
1167 | Matrix BB = BBpass;
|
---|
1168 | int mm = BB.Nrows();
|
---|
1169 | for (int ii = 1; ii <= mm; ii++) {
|
---|
1170 | double xx = BB(ii,1);
|
---|
1171 | double yy = BB(ii,2);
|
---|
1172 | double traveltime = 0.072;
|
---|
1173 | if (iter > 1) {
|
---|
1174 | double zz = BB(ii,3);
|
---|
1175 | double rho = sqrt( (xx-pos(1)) * (xx-pos(1)) +
|
---|
1176 | (yy-pos(2)) * (yy-pos(2)) +
|
---|
1177 | (zz-pos(3)) * (zz-pos(3)) );
|
---|
1178 | traveltime = rho / t_CST::c;
|
---|
1179 | }
|
---|
1180 | double angle = traveltime * t_CST::omega;
|
---|
1181 | double cosa = cos(angle);
|
---|
1182 | double sina = sin(angle);
|
---|
1183 | BB(ii,1) = cosa * xx + sina * yy;
|
---|
1184 | BB(ii,2) = -sina * xx + cosa * yy;
|
---|
1185 | }
|
---|
1186 |
|
---|
1187 | Matrix BBB;
|
---|
1188 | if (mm > 4) {
|
---|
1189 | SymmetricMatrix hlp; hlp << BB.t() * BB;
|
---|
1190 | BBB = hlp.i() * BB.t();
|
---|
1191 | }
|
---|
1192 | else {
|
---|
1193 | BBB = BB.i();
|
---|
1194 | }
|
---|
1195 | ColumnVector ee(mm); ee = 1.0;
|
---|
1196 | ColumnVector alpha(mm); alpha = 0.0;
|
---|
1197 | for (int ii = 1; ii <= mm; ii++) {
|
---|
1198 | alpha(ii) = lorentz(BB.Row(ii).t(),BB.Row(ii).t())/2.0;
|
---|
1199 | }
|
---|
1200 | ColumnVector BBBe = BBB * ee;
|
---|
1201 | ColumnVector BBBalpha = BBB * alpha;
|
---|
1202 | double aa = lorentz(BBBe, BBBe);
|
---|
1203 | double bb = lorentz(BBBe, BBBalpha)-1;
|
---|
1204 | double cc = lorentz(BBBalpha, BBBalpha);
|
---|
1205 | double root = sqrt(bb*bb-aa*cc);
|
---|
1206 |
|
---|
1207 | Matrix hlpPos(4,2);
|
---|
1208 | hlpPos.Column(1) = (-bb-root)/aa * BBBe + BBBalpha;
|
---|
1209 | hlpPos.Column(2) = (-bb+root)/aa * BBBe + BBBalpha;
|
---|
1210 |
|
---|
1211 | ColumnVector omc(2);
|
---|
1212 | for (int pp = 1; pp <= 2; pp++) {
|
---|
1213 | hlpPos(4,pp) = -hlpPos(4,pp);
|
---|
1214 | omc(pp) = BB(1,4) -
|
---|
1215 | sqrt( (BB(1,1)-hlpPos(1,pp)) * (BB(1,1)-hlpPos(1,pp)) +
|
---|
1216 | (BB(1,2)-hlpPos(2,pp)) * (BB(1,2)-hlpPos(2,pp)) +
|
---|
1217 | (BB(1,3)-hlpPos(3,pp)) * (BB(1,3)-hlpPos(3,pp)) ) -
|
---|
1218 | hlpPos(4,pp);
|
---|
1219 | }
|
---|
1220 | if ( fabs(omc(1)) > fabs(omc(2)) ) {
|
---|
1221 | pos = hlpPos.Column(2);
|
---|
1222 | }
|
---|
1223 | else {
|
---|
1224 | pos = hlpPos.Column(1);
|
---|
1225 | }
|
---|
1226 | }
|
---|
1227 | }
|
---|
1228 |
|
---|
1229 | //
|
---|
1230 | ////////////////////////////////////////////////////////////////////////////
|
---|
1231 | void t_pppFilter::cmpDOP(t_epoData* epoData) {
|
---|
1232 |
|
---|
1233 | Tracer tracer("t_pppFilter::cmpDOP");
|
---|
1234 |
|
---|
1235 | _numSat = 0;
|
---|
1236 | _pDop = 0.0;
|
---|
1237 |
|
---|
1238 | if (_params.size() < 4) {
|
---|
1239 | return;
|
---|
1240 | }
|
---|
1241 |
|
---|
1242 | const unsigned numPar = 4;
|
---|
1243 | Matrix AA(epoData->sizeAll(), numPar);
|
---|
1244 | QMapIterator<QString, t_satData*> it(epoData->satData);
|
---|
1245 | while (it.hasNext()) {
|
---|
1246 | it.next();
|
---|
1247 | t_satData* satData = it.value();
|
---|
1248 | _numSat += 1;
|
---|
1249 | for (unsigned iPar = 0; iPar < numPar; iPar++) {
|
---|
1250 | AA[_numSat-1][iPar] = _params[iPar]->partial(satData, false);
|
---|
1251 | }
|
---|
1252 | }
|
---|
1253 | if (_numSat < 4) {
|
---|
1254 | return;
|
---|
1255 | }
|
---|
1256 | AA = AA.Rows(1, _numSat);
|
---|
1257 | SymmetricMatrix NN; NN << AA.t() * AA;
|
---|
1258 | SymmetricMatrix QQ = NN.i();
|
---|
1259 |
|
---|
1260 | _pDop = sqrt(QQ(1,1) + QQ(2,2) + QQ(3,3));
|
---|
1261 | }
|
---|