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: bncParam, bncModel
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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 <newmatio.h>
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44 | #include <sstream>
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45 |
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46 | #include "bncmodel.h"
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47 | #include "bncpppclient.h"
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48 | #include "bnccore.h"
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49 | #include "bncpppclient.h"
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50 | #include "bancroft.h"
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51 | #include "bncutils.h"
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52 | #include "bnctides.h"
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53 | #include "bncantex.h"
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54 | #include "pppopt.h"
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55 |
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56 | using namespace std;
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57 |
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58 | const unsigned MINOBS = 5;
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59 | const double MINELE = 10.0 * M_PI / 180.0;
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60 | const double MAXRES_CODE = 15.0;
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61 | const double MAXRES_PHASE_GPS = 0.04;
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62 | const double MAXRES_PHASE_GLONASS = 0.08;
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63 | const double GLONASS_WEIGHT_FACTOR = 5.0;
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64 |
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65 | // Constructor
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66 | ////////////////////////////////////////////////////////////////////////////
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67 | bncParam::bncParam(bncParam::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 | bncParam::~bncParam() {
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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 bncParam::partial(t_satData* satData, bool phase) {
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85 |
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86 | Tracer tracer("bncParam::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 | bncModel::bncModel(bncPPPclient* pppClient) {
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153 |
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154 | _pppClient = pppClient;
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155 | _staID = pppClient->staID();
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156 | _opt = pppClient->opt();
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157 |
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158 | // NMEA Output
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159 | // -----------
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160 | if (_opt->nmeaFile.isEmpty()) {
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161 | _nmeaFile = 0;
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162 | _nmeaStream = 0;
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163 | }
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164 | else {
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165 | QString hlpName = _opt->nmeaFile; expandEnvVar(hlpName);
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166 | _nmeaFile = new QFile(hlpName);
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167 | if (_opt->rnxAppend) {
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168 | _nmeaFile->open(QIODevice::WriteOnly | QIODevice::Append);
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169 | }
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170 | else {
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171 | _nmeaFile->open(QIODevice::WriteOnly);
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172 | }
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173 | _nmeaStream = new QTextStream();
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174 | _nmeaStream->setDevice(_nmeaFile);
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175 | }
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176 |
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177 | // Antenna Name, ANTEX File
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178 | // ------------------------
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179 | _antex = 0;
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180 | if (!_opt->antexFile.isEmpty()) {
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181 | _antex = new bncAntex();
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182 | if (_antex->readFile(_opt->antexFile) != success) {
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183 | _pppClient->emitNewMessage("wrong ANTEX file", true);
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184 | delete _antex;
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185 | _antex = 0;
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186 | }
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187 | }
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188 |
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189 | // Bancroft Coordinates
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190 | // --------------------
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191 | _xcBanc.ReSize(4); _xcBanc = 0.0;
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192 | _ellBanc.ReSize(3); _ellBanc = 0.0;
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193 |
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194 | // Save copy of data (used in outlier detection)
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195 | // ---------------------------------------------
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196 | _epoData_sav = new t_epoData();
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197 | }
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198 |
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199 | // Destructor
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200 | ////////////////////////////////////////////////////////////////////////////
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201 | bncModel::~bncModel() {
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202 | delete _nmeaStream;
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203 | delete _nmeaFile;
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204 | for (int ii = 0; ii < _posAverage.size(); ++ii) {
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205 | delete _posAverage[ii];
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206 | }
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207 | delete _antex;
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208 | for (int iPar = 1; iPar <= _params.size(); iPar++) {
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209 | delete _params[iPar-1];
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210 | }
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211 | for (int iPar = 1; iPar <= _params_sav.size(); iPar++) {
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212 | delete _params_sav[iPar-1];
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213 | }
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214 | delete _epoData_sav;
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215 | }
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216 |
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217 | // Reset Parameters and Variance-Covariance Matrix
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218 | ////////////////////////////////////////////////////////////////////////////
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219 | void bncModel::reset() {
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220 |
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221 | Tracer tracer("bncModel::reset");
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222 |
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223 | double lastTrp = 0.0;
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224 | for (int ii = 0; ii < _params.size(); ii++) {
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225 | bncParam* pp = _params[ii];
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226 | if (pp->type == bncParam::TROPO) {
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227 | lastTrp = pp->xx;
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228 | }
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229 | delete pp;
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230 | }
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231 | _params.clear();
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232 |
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233 | int nextPar = 0;
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234 | _params.push_back(new bncParam(bncParam::CRD_X, ++nextPar, ""));
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235 | _params.push_back(new bncParam(bncParam::CRD_Y, ++nextPar, ""));
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236 | _params.push_back(new bncParam(bncParam::CRD_Z, ++nextPar, ""));
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237 | _params.push_back(new bncParam(bncParam::RECCLK, ++nextPar, ""));
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238 | if (_opt->estTropo) {
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239 | _params.push_back(new bncParam(bncParam::TROPO, ++nextPar, ""));
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240 | }
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241 | if (_opt->useGlonass) {
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242 | _params.push_back(new bncParam(bncParam::GLONASS_OFFSET, ++nextPar, ""));
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243 | }
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244 | if (_opt->useGalileo) {
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245 | _params.push_back(new bncParam(bncParam::GALILEO_OFFSET, ++nextPar, ""));
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246 | }
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247 |
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248 | _QQ.ReSize(_params.size());
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249 | _QQ = 0.0;
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250 | for (int iPar = 1; iPar <= _params.size(); iPar++) {
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251 | bncParam* pp = _params[iPar-1];
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252 | pp->xx = 0.0;
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253 | if (pp->isCrd()) {
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254 | _QQ(iPar,iPar) = _opt->sigCrd0 * _opt->sigCrd0;
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255 | }
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256 | else if (pp->type == bncParam::RECCLK) {
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257 | _QQ(iPar,iPar) = _opt->sigClk0 * _opt->sigClk0;
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258 | }
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259 | else if (pp->type == bncParam::TROPO) {
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260 | _QQ(iPar,iPar) = _opt->sigTrp0 * _opt->sigTrp0;
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261 | pp->xx = lastTrp;
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262 | }
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263 | else if (pp->type == bncParam::GLONASS_OFFSET) {
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264 | _QQ(iPar,iPar) = _opt->sigGlonassOffset0 * _opt->sigGlonassOffset0;
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265 | }
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266 | else if (pp->type == bncParam::GALILEO_OFFSET) {
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267 | _QQ(iPar,iPar) = _opt->sigGalileoOffset0 * _opt->sigGalileoOffset0;
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268 | }
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269 | }
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270 | }
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271 |
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272 | // Bancroft Solution
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273 | ////////////////////////////////////////////////////////////////////////////
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274 | t_irc bncModel::cmpBancroft(t_epoData* epoData) {
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275 |
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276 | Tracer tracer("bncModel::cmpBancroft");
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277 |
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278 | if (epoData->sizeSys('G') < MINOBS) {
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279 | _log += "bncModel::cmpBancroft: not enough data\n";
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280 | return failure;
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281 | }
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282 |
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283 | Matrix BB(epoData->sizeSys('G'), 4);
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284 |
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285 | QMapIterator<QString, t_satData*> it(epoData->satData);
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286 | int iObsBanc = 0;
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287 | while (it.hasNext()) {
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288 | it.next();
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289 | t_satData* satData = it.value();
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290 | if (satData->system() == 'G') {
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291 | ++iObsBanc;
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292 | QString prn = it.key();
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293 | BB(iObsBanc, 1) = satData->xx(1);
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294 | BB(iObsBanc, 2) = satData->xx(2);
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295 | BB(iObsBanc, 3) = satData->xx(3);
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296 | BB(iObsBanc, 4) = satData->P3 + satData->clk;
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297 | }
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298 | }
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299 |
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300 | bancroft(BB, _xcBanc);
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301 |
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302 | // Ellipsoidal Coordinates
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303 | // ------------------------
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304 | xyz2ell(_xcBanc.data(), _ellBanc.data());
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305 |
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306 | // Compute Satellite Elevations
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307 | // ----------------------------
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308 | QMutableMapIterator<QString, t_satData*> im(epoData->satData);
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309 | while (im.hasNext()) {
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310 | im.next();
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311 | t_satData* satData = im.value();
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312 | cmpEle(satData);
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313 | if (satData->eleSat < MINELE) {
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314 | delete satData;
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315 | im.remove();
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316 | }
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317 | }
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318 |
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319 | return success;
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320 | }
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321 |
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322 | // Computed Value
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323 | ////////////////////////////////////////////////////////////////////////////
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324 | double bncModel::cmpValue(t_satData* satData, bool phase) {
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325 |
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326 | Tracer tracer("bncModel::cmpValue");
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327 |
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328 | ColumnVector xRec(3);
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329 | xRec(1) = x();
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330 | xRec(2) = y();
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331 | xRec(3) = z();
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332 |
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333 | double rho0 = (satData->xx - xRec).norm_Frobenius();
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334 | double dPhi = t_CST::omega * rho0 / t_CST::c;
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335 |
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336 | xRec(1) = x() * cos(dPhi) - y() * sin(dPhi);
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337 | xRec(2) = y() * cos(dPhi) + x() * sin(dPhi);
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338 | xRec(3) = z();
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339 |
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340 | tides(_time, xRec);
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341 |
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342 | satData->rho = (satData->xx - xRec).norm_Frobenius();
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343 |
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344 | double tropDelay = delay_saast(satData->eleSat) +
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345 | trp() / sin(satData->eleSat);
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346 |
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347 | double wind = 0.0;
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348 | if (phase) {
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349 | wind = windUp(satData->prn, satData->xx, xRec) * satData->lambda3;
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350 | }
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351 |
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352 | double offset = 0.0;
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353 | if (satData->prn[0] == 'R') {
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354 | offset = Glonass_offset();
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355 | }
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356 | else if (satData->prn[0] == 'E') {
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357 | offset = Galileo_offset();
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358 | }
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359 |
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360 | double phaseCenter = 0.0;
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361 | if (_antex) {
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362 | bool found;
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363 | phaseCenter = _antex->pco(_opt->antennaName, satData->eleSat, found);
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364 | if (!found) {
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365 | _pppClient->emitNewMessage("ANTEX: antenna >"
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366 | + _opt->antennaName.toAscii() + "< not found", true);
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367 | }
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368 | }
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369 |
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370 | double antennaOffset = 0.0;
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371 | if (_opt->antEccSet()) {
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372 | double cosa = cos(satData->azSat);
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373 | double sina = sin(satData->azSat);
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374 | double cose = cos(satData->eleSat);
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375 | double sine = sin(satData->eleSat);
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376 | antennaOffset = -_opt->antEccNEU[0] * cosa*cose
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377 | -_opt->antEccNEU[1] * sina*cose
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378 | -_opt->antEccNEU[2] * sine;
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379 | }
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380 |
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381 | return satData->rho + phaseCenter + antennaOffset + clk()
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382 | + offset - satData->clk + tropDelay + wind;
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383 | }
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384 |
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385 | // Tropospheric Model (Saastamoinen)
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386 | ////////////////////////////////////////////////////////////////////////////
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387 | double bncModel::delay_saast(double Ele) {
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388 |
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389 | Tracer tracer("bncModel::delay_saast");
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390 |
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391 | double xyz[3];
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392 | xyz[0] = x();
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393 | xyz[1] = y();
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394 | xyz[2] = z();
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395 | double ell[3];
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396 | xyz2ell(xyz, ell);
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397 | double height = ell[2];
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398 |
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399 | double pp = 1013.25 * pow(1.0 - 2.26e-5 * height, 5.225);
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400 | double TT = 18.0 - height * 0.0065 + 273.15;
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401 | double hh = 50.0 * exp(-6.396e-4 * height);
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402 | double ee = hh / 100.0 * exp(-37.2465 + 0.213166*TT - 0.000256908*TT*TT);
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403 |
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404 | double h_km = height / 1000.0;
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405 |
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406 | if (h_km < 0.0) h_km = 0.0;
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407 | if (h_km > 5.0) h_km = 5.0;
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408 | int ii = int(h_km + 1);
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409 | double href = ii - 1;
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410 |
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411 | double bCor[6];
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412 | bCor[0] = 1.156;
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413 | bCor[1] = 1.006;
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414 | bCor[2] = 0.874;
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415 | bCor[3] = 0.757;
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416 | bCor[4] = 0.654;
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417 | bCor[5] = 0.563;
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418 |
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419 | double BB = bCor[ii-1] + (bCor[ii]-bCor[ii-1]) * (h_km - href);
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420 |
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421 | double zen = M_PI/2.0 - Ele;
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422 |
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423 | return (0.002277/cos(zen)) * (pp + ((1255.0/TT)+0.05)*ee - BB*(tan(zen)*tan(zen)));
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424 | }
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425 |
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426 | // Prediction Step of the Filter
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427 | ////////////////////////////////////////////////////////////////////////////
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428 | void bncModel::predict(int iPhase, t_epoData* epoData) {
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429 |
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430 | Tracer tracer("bncModel::predict");
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431 |
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432 | if (iPhase == 0) {
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433 |
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434 | bool firstCrd = false;
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435 | if (!_lastTimeOK.valid() || (_opt->maxSolGap > 0 && _time - _lastTimeOK > _opt->maxSolGap)) {
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436 | firstCrd = true;
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437 | _startTime = epoData->tt;
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438 | reset();
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439 | }
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440 |
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441 | // Use different white noise for Quick-Start mode
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442 | // ----------------------------------------------
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443 | double sigCrdP_used = _opt->sigCrdP;
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444 | if ( _opt->quickStart > 0.0 && _opt->quickStart > (epoData->tt - _startTime) ) {
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445 | sigCrdP_used = 0.0;
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446 | }
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447 |
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448 | // Predict Parameter values, add white noise
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449 | // -----------------------------------------
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450 | for (int iPar = 1; iPar <= _params.size(); iPar++) {
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451 | bncParam* pp = _params[iPar-1];
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452 |
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453 | // Coordinates
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454 | // -----------
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---|
455 | if (pp->type == bncParam::CRD_X) {
|
---|
456 | if (firstCrd) {
|
---|
457 | if (_opt->refCrdSet()) {
|
---|
458 | pp->xx = _opt->refCrd[0];
|
---|
459 | }
|
---|
460 | else {
|
---|
461 | pp->xx = _xcBanc(1);
|
---|
462 | }
|
---|
463 | }
|
---|
464 | _QQ(iPar,iPar) += sigCrdP_used * sigCrdP_used;
|
---|
465 | }
|
---|
466 | else if (pp->type == bncParam::CRD_Y) {
|
---|
467 | if (firstCrd) {
|
---|
468 | if (_opt->refCrdSet()) {
|
---|
469 | pp->xx = _opt->refCrd[1];
|
---|
470 | }
|
---|
471 | else {
|
---|
472 | pp->xx = _xcBanc(2);
|
---|
473 | }
|
---|
474 | }
|
---|
475 | _QQ(iPar,iPar) += sigCrdP_used * sigCrdP_used;
|
---|
476 | }
|
---|
477 | else if (pp->type == bncParam::CRD_Z) {
|
---|
478 | if (firstCrd) {
|
---|
479 | if (_opt->refCrdSet()) {
|
---|
480 | pp->xx = _opt->refCrd[2];
|
---|
481 | }
|
---|
482 | else {
|
---|
483 | pp->xx = _xcBanc(3);
|
---|
484 | }
|
---|
485 | }
|
---|
486 | _QQ(iPar,iPar) += sigCrdP_used * sigCrdP_used;
|
---|
487 | }
|
---|
488 |
|
---|
489 | // Receiver Clocks
|
---|
490 | // ---------------
|
---|
491 | else if (pp->type == bncParam::RECCLK) {
|
---|
492 | pp->xx = _xcBanc(4);
|
---|
493 | for (int jj = 1; jj <= _params.size(); jj++) {
|
---|
494 | _QQ(iPar, jj) = 0.0;
|
---|
495 | }
|
---|
496 | _QQ(iPar,iPar) = _opt->sigClk0 * _opt->sigClk0;
|
---|
497 | }
|
---|
498 |
|
---|
499 | // Tropospheric Delay
|
---|
500 | // ------------------
|
---|
501 | else if (pp->type == bncParam::TROPO) {
|
---|
502 | _QQ(iPar,iPar) += _opt->sigTrpP * _opt->sigTrpP;
|
---|
503 | }
|
---|
504 |
|
---|
505 | // Glonass Offset
|
---|
506 | // --------------
|
---|
507 | else if (pp->type == bncParam::GLONASS_OFFSET) {
|
---|
508 | bool epoSpec = true;
|
---|
509 | if (epoSpec) {
|
---|
510 | pp->xx = 0.0;
|
---|
511 | for (int jj = 1; jj <= _params.size(); jj++) {
|
---|
512 | _QQ(iPar, jj) = 0.0;
|
---|
513 | }
|
---|
514 | _QQ(iPar,iPar) = _opt->sigGlonassOffset0 * _opt->sigGlonassOffset0;
|
---|
515 | }
|
---|
516 | else {
|
---|
517 | _QQ(iPar,iPar) += _opt->sigGlonassOffsetP * _opt->sigGlonassOffsetP;
|
---|
518 | }
|
---|
519 | }
|
---|
520 |
|
---|
521 | // Galileo Offset
|
---|
522 | // --------------
|
---|
523 | else if (pp->type == bncParam::GALILEO_OFFSET) {
|
---|
524 | _QQ(iPar,iPar) += _opt->sigGalileoOffsetP * _opt->sigGalileoOffsetP;
|
---|
525 | }
|
---|
526 | }
|
---|
527 | }
|
---|
528 |
|
---|
529 | // Add New Ambiguities if necessary
|
---|
530 | // --------------------------------
|
---|
531 | if (_opt->usePhase) {
|
---|
532 |
|
---|
533 | // Make a copy of QQ and xx, set parameter indices
|
---|
534 | // -----------------------------------------------
|
---|
535 | SymmetricMatrix QQ_old = _QQ;
|
---|
536 |
|
---|
537 | for (int iPar = 1; iPar <= _params.size(); iPar++) {
|
---|
538 | _params[iPar-1]->index_old = _params[iPar-1]->index;
|
---|
539 | _params[iPar-1]->index = 0;
|
---|
540 | }
|
---|
541 |
|
---|
542 | // Remove Ambiguity Parameters without observations
|
---|
543 | // ------------------------------------------------
|
---|
544 | int iPar = 0;
|
---|
545 | QMutableVectorIterator<bncParam*> im(_params);
|
---|
546 | while (im.hasNext()) {
|
---|
547 | bncParam* par = im.next();
|
---|
548 | bool removed = false;
|
---|
549 | if (par->type == bncParam::AMB_L3) {
|
---|
550 | if (epoData->satData.find(par->prn) == epoData->satData.end()) {
|
---|
551 | removed = true;
|
---|
552 | delete par;
|
---|
553 | im.remove();
|
---|
554 | }
|
---|
555 | }
|
---|
556 | if (! removed) {
|
---|
557 | ++iPar;
|
---|
558 | par->index = iPar;
|
---|
559 | }
|
---|
560 | }
|
---|
561 |
|
---|
562 | // Add new ambiguity parameters
|
---|
563 | // ----------------------------
|
---|
564 | QMapIterator<QString, t_satData*> it(epoData->satData);
|
---|
565 | while (it.hasNext()) {
|
---|
566 | it.next();
|
---|
567 | t_satData* satData = it.value();
|
---|
568 | addAmb(satData);
|
---|
569 | }
|
---|
570 |
|
---|
571 | int nPar = _params.size();
|
---|
572 | _QQ.ReSize(nPar); _QQ = 0.0;
|
---|
573 | for (int i1 = 1; i1 <= nPar; i1++) {
|
---|
574 | bncParam* p1 = _params[i1-1];
|
---|
575 | if (p1->index_old != 0) {
|
---|
576 | _QQ(p1->index, p1->index) = QQ_old(p1->index_old, p1->index_old);
|
---|
577 | for (int i2 = 1; i2 <= nPar; i2++) {
|
---|
578 | bncParam* p2 = _params[i2-1];
|
---|
579 | if (p2->index_old != 0) {
|
---|
580 | _QQ(p1->index, p2->index) = QQ_old(p1->index_old, p2->index_old);
|
---|
581 | }
|
---|
582 | }
|
---|
583 | }
|
---|
584 | }
|
---|
585 |
|
---|
586 | for (int ii = 1; ii <= nPar; ii++) {
|
---|
587 | bncParam* par = _params[ii-1];
|
---|
588 | if (par->index_old == 0) {
|
---|
589 | _QQ(par->index, par->index) = _opt->sigAmb0 * _opt->sigAmb0;
|
---|
590 | }
|
---|
591 | par->index_old = par->index;
|
---|
592 | }
|
---|
593 | }
|
---|
594 | }
|
---|
595 |
|
---|
596 | // Update Step of the Filter (currently just a single-epoch solution)
|
---|
597 | ////////////////////////////////////////////////////////////////////////////
|
---|
598 | t_irc bncModel::update(t_epoData* epoData) {
|
---|
599 |
|
---|
600 | Tracer tracer("bncModel::update");
|
---|
601 |
|
---|
602 | _log.clear();
|
---|
603 |
|
---|
604 | _time = epoData->tt; // current epoch time
|
---|
605 |
|
---|
606 | if (_opt->pppMode) {
|
---|
607 | _log += "Precise Point Positioning of Epoch "
|
---|
608 | + QByteArray(_time.timestr(1).c_str()) +
|
---|
609 | "\n---------------------------------------------------------------\n";
|
---|
610 | }
|
---|
611 | else {
|
---|
612 | _log += "Single Point Positioning of Epoch "
|
---|
613 | + QByteArray(_time.timestr(1).c_str()) +
|
---|
614 | "\n--------------------------------------------------------------\n";
|
---|
615 | }
|
---|
616 |
|
---|
617 | // Outlier Detection Loop
|
---|
618 | // ----------------------
|
---|
619 | if (update_p(epoData) != success) {
|
---|
620 | _pppClient->emitNewMessage(_log, false);
|
---|
621 | return failure;
|
---|
622 | }
|
---|
623 |
|
---|
624 | // Remember the Epoch-specific Results for the computation of means
|
---|
625 | // ----------------------------------------------------------------
|
---|
626 | pppPos* newPos = new pppPos;
|
---|
627 | newPos->time = epoData->tt;
|
---|
628 |
|
---|
629 | // Set Solution Vector
|
---|
630 | // -------------------
|
---|
631 | ostringstream strB;
|
---|
632 | strB.setf(ios::fixed);
|
---|
633 | QVectorIterator<bncParam*> itPar(_params);
|
---|
634 | while (itPar.hasNext()) {
|
---|
635 | bncParam* par = itPar.next();
|
---|
636 |
|
---|
637 | if (par->type == bncParam::RECCLK) {
|
---|
638 | strB << "\n clk = " << setw(10) << setprecision(3) << par->xx
|
---|
639 | << " +- " << setw(6) << setprecision(3)
|
---|
640 | << sqrt(_QQ(par->index,par->index));
|
---|
641 | }
|
---|
642 | else if (par->type == bncParam::AMB_L3) {
|
---|
643 | ++par->numEpo;
|
---|
644 | strB << "\n amb " << par->prn.toAscii().data() << " = "
|
---|
645 | << setw(10) << setprecision(3) << par->xx
|
---|
646 | << " +- " << setw(6) << setprecision(3)
|
---|
647 | << sqrt(_QQ(par->index,par->index))
|
---|
648 | << " nEpo = " << par->numEpo;
|
---|
649 | }
|
---|
650 | else if (par->type == bncParam::TROPO) {
|
---|
651 | double aprTrp = delay_saast(M_PI/2.0);
|
---|
652 | strB << "\n trp = " << par->prn.toAscii().data()
|
---|
653 | << setw(7) << setprecision(3) << aprTrp << " "
|
---|
654 | << setw(6) << setprecision(3) << showpos << par->xx << noshowpos
|
---|
655 | << " +- " << setw(6) << setprecision(3)
|
---|
656 | << sqrt(_QQ(par->index,par->index));
|
---|
657 | newPos->xnt[6] = aprTrp + par->xx;
|
---|
658 | }
|
---|
659 | else if (par->type == bncParam::GLONASS_OFFSET) {
|
---|
660 | strB << "\n offGlo = " << setw(10) << setprecision(3) << par->xx
|
---|
661 | << " +- " << setw(6) << setprecision(3)
|
---|
662 | << sqrt(_QQ(par->index,par->index));
|
---|
663 | }
|
---|
664 | else if (par->type == bncParam::GALILEO_OFFSET) {
|
---|
665 | strB << "\n offGal = " << setw(10) << setprecision(3) << par->xx
|
---|
666 | << " +- " << setw(6) << setprecision(3)
|
---|
667 | << sqrt(_QQ(par->index,par->index));
|
---|
668 | }
|
---|
669 | }
|
---|
670 | strB << '\n';
|
---|
671 | _log += strB.str().c_str();
|
---|
672 | _pppClient->emitNewMessage(_log, false);
|
---|
673 |
|
---|
674 | // Final Message (both log file and screen)
|
---|
675 | // ----------------------------------------
|
---|
676 | ostringstream strC;
|
---|
677 | strC.setf(ios::fixed);
|
---|
678 | strC << _staID.data() << " PPP "
|
---|
679 | << epoData->tt.timestr(1) << " " << epoData->sizeAll() << " "
|
---|
680 | << setw(14) << setprecision(3) << x() << " +- "
|
---|
681 | << setw(6) << setprecision(3) << sqrt(_QQ(1,1)) << " "
|
---|
682 | << setw(14) << setprecision(3) << y() << " +- "
|
---|
683 | << setw(6) << setprecision(3) << sqrt(_QQ(2,2)) << " "
|
---|
684 | << setw(14) << setprecision(3) << z() << " +- "
|
---|
685 | << setw(6) << setprecision(3) << sqrt(_QQ(3,3));
|
---|
686 |
|
---|
687 | // NEU Output
|
---|
688 | // ----------
|
---|
689 | if (_opt->refCrdSet()) {
|
---|
690 | newPos->xnt[0] = x() - _opt->refCrd[0];
|
---|
691 | newPos->xnt[1] = y() - _opt->refCrd[1];
|
---|
692 | newPos->xnt[2] = z() - _opt->refCrd[2];
|
---|
693 |
|
---|
694 | double ellRef[3];
|
---|
695 | xyz2ell(_opt->refCrd, ellRef);
|
---|
696 | xyz2neu(ellRef, newPos->xnt, &newPos->xnt[3]);
|
---|
697 |
|
---|
698 | strC << " NEU "
|
---|
699 | << setw(8) << setprecision(3) << newPos->xnt[3] << " "
|
---|
700 | << setw(8) << setprecision(3) << newPos->xnt[4] << " "
|
---|
701 | << setw(8) << setprecision(3) << newPos->xnt[5] << endl;
|
---|
702 |
|
---|
703 | }
|
---|
704 |
|
---|
705 | _pppClient->emitNewMessage(QByteArray(strC.str().c_str()), true);
|
---|
706 |
|
---|
707 | if (_opt->pppAverage == 0.0) {
|
---|
708 | delete newPos;
|
---|
709 | }
|
---|
710 | else {
|
---|
711 |
|
---|
712 | _posAverage.push_back(newPos);
|
---|
713 |
|
---|
714 | // Compute the Mean
|
---|
715 | // ----------------
|
---|
716 | ColumnVector mean(7); mean = 0.0;
|
---|
717 |
|
---|
718 | QMutableVectorIterator<pppPos*> it(_posAverage);
|
---|
719 | while (it.hasNext()) {
|
---|
720 | pppPos* pp = it.next();
|
---|
721 | if ( (epoData->tt - pp->time) >= _opt->pppAverage ) {
|
---|
722 | delete pp;
|
---|
723 | it.remove();
|
---|
724 | }
|
---|
725 | else {
|
---|
726 | for (int ii = 0; ii < 7; ++ii) {
|
---|
727 | mean[ii] += pp->xnt[ii];
|
---|
728 | }
|
---|
729 | }
|
---|
730 | }
|
---|
731 |
|
---|
732 | int nn = _posAverage.size();
|
---|
733 |
|
---|
734 | if (nn > 0) {
|
---|
735 |
|
---|
736 | mean /= nn;
|
---|
737 |
|
---|
738 | // Compute the Deviation
|
---|
739 | // ---------------------
|
---|
740 | ColumnVector std(7); std = 0.0;
|
---|
741 | QVectorIterator<pppPos*> it2(_posAverage);
|
---|
742 | while (it2.hasNext()) {
|
---|
743 | pppPos* pp = it2.next();
|
---|
744 | for (int ii = 0; ii < 7; ++ii) {
|
---|
745 | std[ii] += (pp->xnt[ii] - mean[ii]) * (pp->xnt[ii] - mean[ii]);
|
---|
746 | }
|
---|
747 | }
|
---|
748 | for (int ii = 0; ii < 7; ++ii) {
|
---|
749 | std[ii] = sqrt(std[ii] / nn);
|
---|
750 | }
|
---|
751 |
|
---|
752 | if (_opt->refCrdSet()) {
|
---|
753 | ostringstream strD; strD.setf(ios::fixed);
|
---|
754 | strD << _staID.data() << " AVE-XYZ "
|
---|
755 | << epoData->tt.timestr(1) << " "
|
---|
756 | << setw(13) << setprecision(3) << mean[0] + _opt->refCrd[0] << " +- "
|
---|
757 | << setw(6) << setprecision(3) << std[0] << " "
|
---|
758 | << setw(14) << setprecision(3) << mean[1] + _opt->refCrd[1] << " +- "
|
---|
759 | << setw(6) << setprecision(3) << std[1] << " "
|
---|
760 | << setw(14) << setprecision(3) << mean[2] + _opt->refCrd[2] << " +- "
|
---|
761 | << setw(6) << setprecision(3) << std[2];
|
---|
762 | _pppClient->emitNewMessage(QByteArray(strD.str().c_str()), true);
|
---|
763 |
|
---|
764 | ostringstream strE; strE.setf(ios::fixed);
|
---|
765 | strE << _staID.data() << " AVE-NEU "
|
---|
766 | << epoData->tt.timestr(1) << " "
|
---|
767 | << setw(13) << setprecision(3) << mean[3] << " +- "
|
---|
768 | << setw(6) << setprecision(3) << std[3] << " "
|
---|
769 | << setw(14) << setprecision(3) << mean[4] << " +- "
|
---|
770 | << setw(6) << setprecision(3) << std[4] << " "
|
---|
771 | << setw(14) << setprecision(3) << mean[5] << " +- "
|
---|
772 | << setw(6) << setprecision(3) << std[5];
|
---|
773 | _pppClient->emitNewMessage(QByteArray(strE.str().c_str()), true);
|
---|
774 |
|
---|
775 | if (_opt->estTropo) {
|
---|
776 | ostringstream strF; strF.setf(ios::fixed);
|
---|
777 | strF << _staID.data() << " AVE-TRP "
|
---|
778 | << epoData->tt.timestr(1) << " "
|
---|
779 | << setw(13) << setprecision(3) << mean[6] << " +- "
|
---|
780 | << setw(6) << setprecision(3) << std[6] << endl;
|
---|
781 | _pppClient->emitNewMessage(QByteArray(strF.str().c_str()), true);
|
---|
782 | }
|
---|
783 | }
|
---|
784 | }
|
---|
785 | }
|
---|
786 |
|
---|
787 | // NMEA Output
|
---|
788 | // -----------
|
---|
789 | double xyz[3];
|
---|
790 | xyz[0] = x();
|
---|
791 | xyz[1] = y();
|
---|
792 | xyz[2] = z();
|
---|
793 | double ell[3];
|
---|
794 | xyz2ell(xyz, ell);
|
---|
795 | double phiDeg = ell[0] * 180 / M_PI;
|
---|
796 | double lamDeg = ell[1] * 180 / M_PI;
|
---|
797 |
|
---|
798 | char phiCh = 'N';
|
---|
799 | if (phiDeg < 0) {
|
---|
800 | phiDeg = -phiDeg;
|
---|
801 | phiCh = 'S';
|
---|
802 | }
|
---|
803 | char lamCh = 'E';
|
---|
804 | if (lamDeg < 0) {
|
---|
805 | lamDeg = -lamDeg;
|
---|
806 | lamCh = 'W';
|
---|
807 | }
|
---|
808 |
|
---|
809 | string datestr = epoData->tt.datestr(0); // yyyymmdd
|
---|
810 | ostringstream strRMC;
|
---|
811 | strRMC.setf(ios::fixed);
|
---|
812 | strRMC << "GPRMC,"
|
---|
813 | << epoData->tt.timestr(0,0) << ",A,"
|
---|
814 | << setw(2) << setfill('0') << int(phiDeg)
|
---|
815 | << setw(6) << setprecision(3) << setfill('0')
|
---|
816 | << fmod(60*phiDeg,60) << ',' << phiCh << ','
|
---|
817 | << setw(3) << setfill('0') << int(lamDeg)
|
---|
818 | << setw(6) << setprecision(3) << setfill('0')
|
---|
819 | << fmod(60*lamDeg,60) << ',' << lamCh << ",,,"
|
---|
820 | << datestr[6] << datestr[7] << datestr[4] << datestr[5]
|
---|
821 | << datestr[2] << datestr[3] << ",,";
|
---|
822 |
|
---|
823 | writeNMEAstr(QString(strRMC.str().c_str()));
|
---|
824 |
|
---|
825 | double dop = 2.0; // TODO
|
---|
826 |
|
---|
827 | ostringstream strGGA;
|
---|
828 | strGGA.setf(ios::fixed);
|
---|
829 | strGGA << "GPGGA,"
|
---|
830 | << epoData->tt.timestr(0,0) << ','
|
---|
831 | << setw(2) << setfill('0') << int(phiDeg)
|
---|
832 | << setw(10) << setprecision(7) << setfill('0')
|
---|
833 | << fmod(60*phiDeg,60) << ',' << phiCh << ','
|
---|
834 | << setw(3) << setfill('0') << int(lamDeg)
|
---|
835 | << setw(10) << setprecision(7) << setfill('0')
|
---|
836 | << fmod(60*lamDeg,60) << ',' << lamCh
|
---|
837 | << ",1," << setw(2) << setfill('0') << epoData->sizeAll() << ','
|
---|
838 | << setw(3) << setprecision(1) << dop << ','
|
---|
839 | << setprecision(3) << ell[2] << ",M,0.0,M,,";
|
---|
840 |
|
---|
841 | writeNMEAstr(QString(strGGA.str().c_str()));
|
---|
842 |
|
---|
843 | _lastTimeOK = _time; // remember time of last successful update
|
---|
844 | return success;
|
---|
845 | }
|
---|
846 |
|
---|
847 | // Outlier Detection
|
---|
848 | ////////////////////////////////////////////////////////////////////////////
|
---|
849 | QString bncModel::outlierDetection(int iPhase, const ColumnVector& vv,
|
---|
850 | QMap<QString, t_satData*>& satData) {
|
---|
851 |
|
---|
852 | Tracer tracer("bncModel::outlierDetection");
|
---|
853 |
|
---|
854 | QString prnGPS;
|
---|
855 | QString prnGlo;
|
---|
856 | double maxResGPS = 0.0;
|
---|
857 | double maxResGlo = 0.0;
|
---|
858 | findMaxRes(vv, satData, prnGPS, prnGlo, maxResGPS, maxResGlo);
|
---|
859 |
|
---|
860 | if (iPhase == 1) {
|
---|
861 | if (maxResGlo > MAXRES_PHASE_GLONASS) {
|
---|
862 | _log += "Outlier Phase " + prnGlo + " "
|
---|
863 | + QByteArray::number(maxResGlo, 'f', 3) + "\n";
|
---|
864 | return prnGlo;
|
---|
865 | }
|
---|
866 | else if (maxResGPS > MAXRES_PHASE_GPS) {
|
---|
867 | _log += "Outlier Phase " + prnGPS + " "
|
---|
868 | + QByteArray::number(maxResGPS, 'f', 3) + "\n";
|
---|
869 | return prnGPS;
|
---|
870 | }
|
---|
871 | }
|
---|
872 | else if (iPhase == 0 && maxResGPS > MAXRES_CODE) {
|
---|
873 | _log += "Outlier Code " + prnGPS + " "
|
---|
874 | + QByteArray::number(maxResGPS, 'f', 3) + "\n";
|
---|
875 | return prnGPS;
|
---|
876 | }
|
---|
877 |
|
---|
878 | return QString();
|
---|
879 | }
|
---|
880 |
|
---|
881 | //
|
---|
882 | ////////////////////////////////////////////////////////////////////////////
|
---|
883 | void bncModel::writeNMEAstr(const QString& nmStr) {
|
---|
884 |
|
---|
885 | Tracer tracer("bncModel::writeNMEAstr");
|
---|
886 |
|
---|
887 | unsigned char XOR = 0;
|
---|
888 | for (int ii = 0; ii < nmStr.length(); ii++) {
|
---|
889 | XOR ^= (unsigned char) nmStr[ii].toAscii();
|
---|
890 | }
|
---|
891 |
|
---|
892 | QString outStr = '$' + nmStr
|
---|
893 | + QString("*%1\n").arg(int(XOR), 0, 16).toUpper();
|
---|
894 |
|
---|
895 | if (_nmeaStream) {
|
---|
896 | *_nmeaStream << outStr;
|
---|
897 | _nmeaStream->flush();
|
---|
898 | }
|
---|
899 |
|
---|
900 | _pppClient->emitNewNMEAstr(outStr.toAscii());
|
---|
901 | }
|
---|
902 |
|
---|
903 | //
|
---|
904 | //////////////////////////////////////////////////////////////////////////////
|
---|
905 | void bncModel::kalman(const Matrix& AA, const ColumnVector& ll,
|
---|
906 | const DiagonalMatrix& PP,
|
---|
907 | SymmetricMatrix& QQ, ColumnVector& dx) {
|
---|
908 |
|
---|
909 | Tracer tracer("bncModel::kalman");
|
---|
910 |
|
---|
911 | int nPar = AA.Ncols();
|
---|
912 | #if 1
|
---|
913 | int nObs = AA.Nrows();
|
---|
914 | UpperTriangularMatrix SS = Cholesky(QQ).t();
|
---|
915 |
|
---|
916 | Matrix SA = SS*AA.t();
|
---|
917 | Matrix SRF(nObs+nPar, nObs+nPar); SRF = 0;
|
---|
918 | for (int ii = 1; ii <= nObs; ++ii) {
|
---|
919 | SRF(ii,ii) = 1.0 / sqrt(PP(ii,ii));
|
---|
920 | }
|
---|
921 |
|
---|
922 | SRF.SubMatrix (nObs+1, nObs+nPar, 1, nObs) = SA;
|
---|
923 | SRF.SymSubMatrix(nObs+1, nObs+nPar) = SS;
|
---|
924 |
|
---|
925 | UpperTriangularMatrix UU;
|
---|
926 | QRZ(SRF, UU);
|
---|
927 |
|
---|
928 | SS = UU.SymSubMatrix(nObs+1, nObs+nPar);
|
---|
929 | UpperTriangularMatrix SH_rt = UU.SymSubMatrix(1, nObs);
|
---|
930 | Matrix YY = UU.SubMatrix(1, nObs, nObs+1, nObs+nPar);
|
---|
931 |
|
---|
932 | UpperTriangularMatrix SHi = SH_rt.i();
|
---|
933 |
|
---|
934 | Matrix KT = SHi * YY;
|
---|
935 | SymmetricMatrix Hi; Hi << SHi * SHi.t();
|
---|
936 |
|
---|
937 | dx = KT.t() * ll;
|
---|
938 | QQ << (SS.t() * SS);
|
---|
939 | #else
|
---|
940 | DiagonalMatrix Ql = PP.i();
|
---|
941 | Matrix DD = QQ * AA.t();
|
---|
942 | SymmetricMatrix SM(nPar); SM << AA * DD + Ql;
|
---|
943 | UpperTriangularMatrix UU = Cholesky(SM).t();
|
---|
944 | UpperTriangularMatrix Ui = UU.i();
|
---|
945 | Matrix EE = DD * Ui;
|
---|
946 | Matrix KK = EE * Ui.t();
|
---|
947 | QQ << QQ - EE * EE.t();
|
---|
948 | dx = KK * ll;
|
---|
949 | #endif
|
---|
950 | }
|
---|
951 |
|
---|
952 | // Phase Wind-Up Correction
|
---|
953 | ///////////////////////////////////////////////////////////////////////////
|
---|
954 | double bncModel::windUp(const QString& prn, const ColumnVector& rSat,
|
---|
955 | const ColumnVector& rRec) {
|
---|
956 |
|
---|
957 | Tracer tracer("bncModel::windUp");
|
---|
958 |
|
---|
959 | double Mjd = _time.mjd() + _time.daysec() / 86400.0;
|
---|
960 |
|
---|
961 | // First time - initialize to zero
|
---|
962 | // -------------------------------
|
---|
963 | if (!_windUpTime.contains(prn)) {
|
---|
964 | _windUpSum[prn] = 0.0;
|
---|
965 | }
|
---|
966 |
|
---|
967 | // Compute the correction for new time
|
---|
968 | // -----------------------------------
|
---|
969 | if (!_windUpTime.contains(prn) || _windUpTime[prn] != Mjd) {
|
---|
970 | _windUpTime[prn] = Mjd;
|
---|
971 |
|
---|
972 | // Unit Vector GPS Satellite --> Receiver
|
---|
973 | // --------------------------------------
|
---|
974 | ColumnVector rho = rRec - rSat;
|
---|
975 | rho /= rho.norm_Frobenius();
|
---|
976 |
|
---|
977 | // GPS Satellite unit Vectors sz, sy, sx
|
---|
978 | // -------------------------------------
|
---|
979 | ColumnVector sz = -rSat / rSat.norm_Frobenius();
|
---|
980 |
|
---|
981 | ColumnVector xSun = Sun(Mjd);
|
---|
982 | xSun /= xSun.norm_Frobenius();
|
---|
983 |
|
---|
984 | ColumnVector sy = crossproduct(sz, xSun);
|
---|
985 | ColumnVector sx = crossproduct(sy, sz);
|
---|
986 |
|
---|
987 | // Effective Dipole of the GPS Satellite Antenna
|
---|
988 | // ---------------------------------------------
|
---|
989 | ColumnVector dipSat = sx - rho * DotProduct(rho,sx)
|
---|
990 | - crossproduct(rho, sy);
|
---|
991 |
|
---|
992 | // Receiver unit Vectors rx, ry
|
---|
993 | // ----------------------------
|
---|
994 | ColumnVector rx(3);
|
---|
995 | ColumnVector ry(3);
|
---|
996 |
|
---|
997 | double recEll[3]; xyz2ell(rRec.data(), recEll) ;
|
---|
998 | double neu[3];
|
---|
999 |
|
---|
1000 | neu[0] = 1.0;
|
---|
1001 | neu[1] = 0.0;
|
---|
1002 | neu[2] = 0.0;
|
---|
1003 | neu2xyz(recEll, neu, rx.data());
|
---|
1004 |
|
---|
1005 | neu[0] = 0.0;
|
---|
1006 | neu[1] = -1.0;
|
---|
1007 | neu[2] = 0.0;
|
---|
1008 | neu2xyz(recEll, neu, ry.data());
|
---|
1009 |
|
---|
1010 | // Effective Dipole of the Receiver Antenna
|
---|
1011 | // ----------------------------------------
|
---|
1012 | ColumnVector dipRec = rx - rho * DotProduct(rho,rx)
|
---|
1013 | + crossproduct(rho, ry);
|
---|
1014 |
|
---|
1015 | // Resulting Effect
|
---|
1016 | // ----------------
|
---|
1017 | double alpha = DotProduct(dipSat,dipRec) /
|
---|
1018 | (dipSat.norm_Frobenius() * dipRec.norm_Frobenius());
|
---|
1019 |
|
---|
1020 | if (alpha > 1.0) alpha = 1.0;
|
---|
1021 | if (alpha < -1.0) alpha = -1.0;
|
---|
1022 |
|
---|
1023 | double dphi = acos(alpha) / 2.0 / M_PI; // in cycles
|
---|
1024 |
|
---|
1025 | if ( DotProduct(rho, crossproduct(dipSat, dipRec)) < 0.0 ) {
|
---|
1026 | dphi = -dphi;
|
---|
1027 | }
|
---|
1028 |
|
---|
1029 | _windUpSum[prn] = floor(_windUpSum[prn] - dphi + 0.5) + dphi;
|
---|
1030 | }
|
---|
1031 |
|
---|
1032 | return _windUpSum[prn];
|
---|
1033 | }
|
---|
1034 |
|
---|
1035 | //
|
---|
1036 | ///////////////////////////////////////////////////////////////////////////
|
---|
1037 | void bncModel::cmpEle(t_satData* satData) {
|
---|
1038 | Tracer tracer("bncModel::cmpEle");
|
---|
1039 | ColumnVector rr = satData->xx - _xcBanc.Rows(1,3);
|
---|
1040 | double rho = rr.norm_Frobenius();
|
---|
1041 |
|
---|
1042 | double neu[3];
|
---|
1043 | xyz2neu(_ellBanc.data(), rr.data(), neu);
|
---|
1044 |
|
---|
1045 | satData->eleSat = acos( sqrt(neu[0]*neu[0] + neu[1]*neu[1]) / rho );
|
---|
1046 | if (neu[2] < 0) {
|
---|
1047 | satData->eleSat *= -1.0;
|
---|
1048 | }
|
---|
1049 | satData->azSat = atan2(neu[1], neu[0]);
|
---|
1050 | }
|
---|
1051 |
|
---|
1052 | //
|
---|
1053 | ///////////////////////////////////////////////////////////////////////////
|
---|
1054 | void bncModel::addAmb(t_satData* satData) {
|
---|
1055 | Tracer tracer("bncModel::addAmb");
|
---|
1056 | bool found = false;
|
---|
1057 | for (int iPar = 1; iPar <= _params.size(); iPar++) {
|
---|
1058 | if (_params[iPar-1]->type == bncParam::AMB_L3 &&
|
---|
1059 | _params[iPar-1]->prn == satData->prn) {
|
---|
1060 | found = true;
|
---|
1061 | break;
|
---|
1062 | }
|
---|
1063 | }
|
---|
1064 | if (!found) {
|
---|
1065 | bncParam* par = new bncParam(bncParam::AMB_L3,
|
---|
1066 | _params.size()+1, satData->prn);
|
---|
1067 | _params.push_back(par);
|
---|
1068 | par->xx = satData->L3 - cmpValue(satData, true);
|
---|
1069 | }
|
---|
1070 | }
|
---|
1071 |
|
---|
1072 | //
|
---|
1073 | ///////////////////////////////////////////////////////////////////////////
|
---|
1074 | void bncModel::addObs(int iPhase, unsigned& iObs, t_satData* satData,
|
---|
1075 | Matrix& AA, ColumnVector& ll, DiagonalMatrix& PP) {
|
---|
1076 |
|
---|
1077 | Tracer tracer("bncModel::addObs");
|
---|
1078 |
|
---|
1079 | const double ELEWGHT = 20.0;
|
---|
1080 | double ellWgtCoef = 1.0;
|
---|
1081 | double eleD = satData->eleSat * 180.0 / M_PI;
|
---|
1082 | if (eleD < ELEWGHT) {
|
---|
1083 | ellWgtCoef = 1.5 - 0.5 / (ELEWGHT - 10.0) * (eleD - 10.0);
|
---|
1084 | }
|
---|
1085 |
|
---|
1086 | // Remember Observation Index
|
---|
1087 | // --------------------------
|
---|
1088 | ++iObs;
|
---|
1089 | satData->obsIndex = iObs;
|
---|
1090 |
|
---|
1091 | // Phase Observations
|
---|
1092 | // ------------------
|
---|
1093 | if (iPhase == 1) {
|
---|
1094 | ll(iObs) = satData->L3 - cmpValue(satData, true);
|
---|
1095 | double sigL3 = _opt->sigL3;
|
---|
1096 | if (satData->system() == 'R') {
|
---|
1097 | sigL3 *= GLONASS_WEIGHT_FACTOR;
|
---|
1098 | }
|
---|
1099 | PP(iObs,iObs) = 1.0 / (sigL3 * sigL3) / (ellWgtCoef * ellWgtCoef);
|
---|
1100 | for (int iPar = 1; iPar <= _params.size(); iPar++) {
|
---|
1101 | if (_params[iPar-1]->type == bncParam::AMB_L3 &&
|
---|
1102 | _params[iPar-1]->prn == satData->prn) {
|
---|
1103 | ll(iObs) -= _params[iPar-1]->xx;
|
---|
1104 | }
|
---|
1105 | AA(iObs, iPar) = _params[iPar-1]->partial(satData, true);
|
---|
1106 | }
|
---|
1107 | }
|
---|
1108 |
|
---|
1109 | // Code Observations
|
---|
1110 | // -----------------
|
---|
1111 | else {
|
---|
1112 | ll(iObs) = satData->P3 - cmpValue(satData, false);
|
---|
1113 | PP(iObs,iObs) = 1.0 / (_opt->sigP3 * _opt->sigP3) / (ellWgtCoef * ellWgtCoef);
|
---|
1114 | for (int iPar = 1; iPar <= _params.size(); iPar++) {
|
---|
1115 | AA(iObs, iPar) = _params[iPar-1]->partial(satData, false);
|
---|
1116 | }
|
---|
1117 | }
|
---|
1118 | }
|
---|
1119 |
|
---|
1120 | //
|
---|
1121 | ///////////////////////////////////////////////////////////////////////////
|
---|
1122 | QByteArray bncModel::printRes(int iPhase, const ColumnVector& vv,
|
---|
1123 | const QMap<QString, t_satData*>& satDataMap) {
|
---|
1124 |
|
---|
1125 | Tracer tracer("bncModel::printRes");
|
---|
1126 |
|
---|
1127 | ostringstream str;
|
---|
1128 | str.setf(ios::fixed);
|
---|
1129 |
|
---|
1130 | QMapIterator<QString, t_satData*> it(satDataMap);
|
---|
1131 | while (it.hasNext()) {
|
---|
1132 | it.next();
|
---|
1133 | t_satData* satData = it.value();
|
---|
1134 | if (satData->obsIndex != 0) {
|
---|
1135 | str << _time.timestr(1)
|
---|
1136 | << " RES " << satData->prn.toAscii().data()
|
---|
1137 | << (iPhase ? " L3 " : " P3 ")
|
---|
1138 | << setw(9) << setprecision(4) << vv(satData->obsIndex) << endl;
|
---|
1139 | }
|
---|
1140 | }
|
---|
1141 |
|
---|
1142 | return QByteArray(str.str().c_str());
|
---|
1143 | }
|
---|
1144 |
|
---|
1145 | //
|
---|
1146 | ///////////////////////////////////////////////////////////////////////////
|
---|
1147 | void bncModel::findMaxRes(const ColumnVector& vv,
|
---|
1148 | const QMap<QString, t_satData*>& satData,
|
---|
1149 | QString& prnGPS, QString& prnGlo,
|
---|
1150 | double& maxResGPS, double& maxResGlo) {
|
---|
1151 |
|
---|
1152 | Tracer tracer("bncModel::findMaxRes");
|
---|
1153 |
|
---|
1154 | maxResGPS = 0.0;
|
---|
1155 | maxResGlo = 0.0;
|
---|
1156 |
|
---|
1157 | QMapIterator<QString, t_satData*> it(satData);
|
---|
1158 | while (it.hasNext()) {
|
---|
1159 | it.next();
|
---|
1160 | t_satData* satData = it.value();
|
---|
1161 | if (satData->obsIndex != 0) {
|
---|
1162 | QString prn = satData->prn;
|
---|
1163 | if (prn[0] == 'R') {
|
---|
1164 | if (fabs(vv(satData->obsIndex)) > maxResGlo) {
|
---|
1165 | maxResGlo = fabs(vv(satData->obsIndex));
|
---|
1166 | prnGlo = prn;
|
---|
1167 | }
|
---|
1168 | }
|
---|
1169 | else {
|
---|
1170 | if (fabs(vv(satData->obsIndex)) > maxResGPS) {
|
---|
1171 | maxResGPS = fabs(vv(satData->obsIndex));
|
---|
1172 | prnGPS = prn;
|
---|
1173 | }
|
---|
1174 | }
|
---|
1175 | }
|
---|
1176 | }
|
---|
1177 | }
|
---|
1178 |
|
---|
1179 | // Update Step (private - loop over outliers)
|
---|
1180 | ////////////////////////////////////////////////////////////////////////////
|
---|
1181 | t_irc bncModel::update_p(t_epoData* epoData) {
|
---|
1182 |
|
---|
1183 | Tracer tracer("bncModel::update_p");
|
---|
1184 |
|
---|
1185 | // Save Variance-Covariance Matrix, and Status Vector
|
---|
1186 | // --------------------------------------------------
|
---|
1187 | rememberState(epoData);
|
---|
1188 |
|
---|
1189 | QString lastOutlierPrn;
|
---|
1190 |
|
---|
1191 | // Try with all satellites, then with all minus one, etc.
|
---|
1192 | // ------------------------------------------------------
|
---|
1193 | while (selectSatellites(lastOutlierPrn, epoData->satData) == success) {
|
---|
1194 |
|
---|
1195 | QByteArray strResCode;
|
---|
1196 | QByteArray strResPhase;
|
---|
1197 |
|
---|
1198 | // Bancroft Solution
|
---|
1199 | // -----------------
|
---|
1200 | if (cmpBancroft(epoData) != success) {
|
---|
1201 | break;
|
---|
1202 | }
|
---|
1203 |
|
---|
1204 | // First update using code observations, then phase observations
|
---|
1205 | // -------------------------------------------------------------
|
---|
1206 | for (int iPhase = 0; iPhase <= (_opt->usePhase ? 1 : 0); iPhase++) {
|
---|
1207 |
|
---|
1208 | // Status Prediction
|
---|
1209 | // -----------------
|
---|
1210 | predict(iPhase, epoData);
|
---|
1211 |
|
---|
1212 | // Create First-Design Matrix
|
---|
1213 | // --------------------------
|
---|
1214 | unsigned nPar = _params.size();
|
---|
1215 | unsigned nObs = 0;
|
---|
1216 | if (iPhase == 0) {
|
---|
1217 | nObs = epoData->sizeAll() - epoData->sizeSys('R'); // Glonass code not used
|
---|
1218 | }
|
---|
1219 | else {
|
---|
1220 | nObs = epoData->sizeAll();
|
---|
1221 | }
|
---|
1222 |
|
---|
1223 | // Prepare first-design Matrix, vector observed-computed
|
---|
1224 | // -----------------------------------------------------
|
---|
1225 | Matrix AA(nObs, nPar); // first design matrix
|
---|
1226 | ColumnVector ll(nObs); // tems observed-computed
|
---|
1227 | DiagonalMatrix PP(nObs); PP = 0.0;
|
---|
1228 |
|
---|
1229 | unsigned iObs = 0;
|
---|
1230 | QMapIterator<QString, t_satData*> it(epoData->satData);
|
---|
1231 | while (it.hasNext()) {
|
---|
1232 | it.next();
|
---|
1233 | t_satData* satData = it.value();
|
---|
1234 | if (iPhase == 1 || satData->system() != 'R') {
|
---|
1235 | QString prn = satData->prn;
|
---|
1236 | addObs(iPhase, iObs, satData, AA, ll, PP);
|
---|
1237 | }
|
---|
1238 | }
|
---|
1239 |
|
---|
1240 | // Compute Filter Update
|
---|
1241 | // ---------------------
|
---|
1242 | ColumnVector dx;
|
---|
1243 | kalman(AA, ll, PP, _QQ, dx);
|
---|
1244 | ColumnVector vv = ll - AA * dx;
|
---|
1245 |
|
---|
1246 | // Print Residuals
|
---|
1247 | // ---------------
|
---|
1248 | if (iPhase == 0) {
|
---|
1249 | strResCode = printRes(iPhase, vv, epoData->satData);
|
---|
1250 | }
|
---|
1251 | else {
|
---|
1252 | strResPhase = printRes(iPhase, vv, epoData->satData);
|
---|
1253 | }
|
---|
1254 |
|
---|
1255 | // Check the residuals
|
---|
1256 | // -------------------
|
---|
1257 | lastOutlierPrn = outlierDetection(iPhase, vv, epoData->satData);
|
---|
1258 |
|
---|
1259 | // No Outlier Detected
|
---|
1260 | // -------------------
|
---|
1261 | if (lastOutlierPrn.isEmpty()) {
|
---|
1262 |
|
---|
1263 | QVectorIterator<bncParam*> itPar(_params);
|
---|
1264 | while (itPar.hasNext()) {
|
---|
1265 | bncParam* par = itPar.next();
|
---|
1266 | par->xx += dx(par->index);
|
---|
1267 | }
|
---|
1268 |
|
---|
1269 | if (!_opt->usePhase || iPhase == 1) {
|
---|
1270 | if (_outlierGPS.size() > 0 || _outlierGlo.size() > 0) {
|
---|
1271 | _log += "Neglected PRNs: ";
|
---|
1272 | if (!_outlierGPS.isEmpty()) {
|
---|
1273 | _log += _outlierGPS.last() + ' ';
|
---|
1274 | }
|
---|
1275 | QStringListIterator itGlo(_outlierGlo);
|
---|
1276 | while (itGlo.hasNext()) {
|
---|
1277 | QString prn = itGlo.next();
|
---|
1278 | _log += prn + ' ';
|
---|
1279 | }
|
---|
1280 | }
|
---|
1281 | _log += '\n';
|
---|
1282 |
|
---|
1283 | _log += strResCode + strResPhase;
|
---|
1284 |
|
---|
1285 | return success;
|
---|
1286 | }
|
---|
1287 | }
|
---|
1288 |
|
---|
1289 | // Outlier Found
|
---|
1290 | // -------------
|
---|
1291 | else {
|
---|
1292 | restoreState(epoData);
|
---|
1293 | break;
|
---|
1294 | }
|
---|
1295 |
|
---|
1296 | } // for iPhase
|
---|
1297 |
|
---|
1298 | } // while selectSatellites
|
---|
1299 |
|
---|
1300 | restoreState(epoData);
|
---|
1301 | return failure;
|
---|
1302 | }
|
---|
1303 |
|
---|
1304 | // Remeber Original State Vector and Variance-Covariance Matrix
|
---|
1305 | ////////////////////////////////////////////////////////////////////////////
|
---|
1306 | void bncModel::rememberState(t_epoData* epoData) {
|
---|
1307 |
|
---|
1308 | _QQ_sav = _QQ;
|
---|
1309 |
|
---|
1310 | QVectorIterator<bncParam*> itSav(_params_sav);
|
---|
1311 | while (itSav.hasNext()) {
|
---|
1312 | bncParam* par = itSav.next();
|
---|
1313 | delete par;
|
---|
1314 | }
|
---|
1315 | _params_sav.clear();
|
---|
1316 |
|
---|
1317 | QVectorIterator<bncParam*> it(_params);
|
---|
1318 | while (it.hasNext()) {
|
---|
1319 | bncParam* par = it.next();
|
---|
1320 | _params_sav.push_back(new bncParam(*par));
|
---|
1321 | }
|
---|
1322 |
|
---|
1323 | _epoData_sav->deepCopy(epoData);
|
---|
1324 | }
|
---|
1325 |
|
---|
1326 | // Restore Original State Vector and Variance-Covariance Matrix
|
---|
1327 | ////////////////////////////////////////////////////////////////////////////
|
---|
1328 | void bncModel::restoreState(t_epoData* epoData) {
|
---|
1329 |
|
---|
1330 | _QQ = _QQ_sav;
|
---|
1331 |
|
---|
1332 | QVectorIterator<bncParam*> it(_params);
|
---|
1333 | while (it.hasNext()) {
|
---|
1334 | bncParam* par = it.next();
|
---|
1335 | delete par;
|
---|
1336 | }
|
---|
1337 | _params.clear();
|
---|
1338 |
|
---|
1339 | QVectorIterator<bncParam*> itSav(_params_sav);
|
---|
1340 | while (itSav.hasNext()) {
|
---|
1341 | bncParam* par = itSav.next();
|
---|
1342 | _params.push_back(new bncParam(*par));
|
---|
1343 | }
|
---|
1344 |
|
---|
1345 | epoData->deepCopy(_epoData_sav);
|
---|
1346 | }
|
---|
1347 |
|
---|
1348 | //
|
---|
1349 | ////////////////////////////////////////////////////////////////////////////
|
---|
1350 | t_irc bncModel::selectSatellites(const QString& lastOutlierPrn,
|
---|
1351 | QMap<QString, t_satData*>& satData) {
|
---|
1352 |
|
---|
1353 | // First Call
|
---|
1354 | // ----------
|
---|
1355 | if (lastOutlierPrn.isEmpty()) {
|
---|
1356 | _outlierGPS.clear();
|
---|
1357 | _outlierGlo.clear();
|
---|
1358 | return success;
|
---|
1359 | }
|
---|
1360 |
|
---|
1361 | // Second and next trials
|
---|
1362 | // ----------------------
|
---|
1363 | else {
|
---|
1364 |
|
---|
1365 | if (lastOutlierPrn[0] == 'R') {
|
---|
1366 | _outlierGlo << lastOutlierPrn;
|
---|
1367 | }
|
---|
1368 |
|
---|
1369 | // Remove all Glonass Outliers
|
---|
1370 | // ---------------------------
|
---|
1371 | QStringListIterator it(_outlierGlo);
|
---|
1372 | while (it.hasNext()) {
|
---|
1373 | QString prn = it.next();
|
---|
1374 | if (satData.contains(prn)) {
|
---|
1375 | delete satData.take(prn);
|
---|
1376 | }
|
---|
1377 | }
|
---|
1378 |
|
---|
1379 | if (lastOutlierPrn[0] == 'R') {
|
---|
1380 | _outlierGPS.clear();
|
---|
1381 | return success;
|
---|
1382 | }
|
---|
1383 |
|
---|
1384 | // GPS Outlier appeared for the first time - try to delete it
|
---|
1385 | // ----------------------------------------------------------
|
---|
1386 | if (_outlierGPS.indexOf(lastOutlierPrn) == -1) {
|
---|
1387 | _outlierGPS << lastOutlierPrn;
|
---|
1388 | if (satData.contains(lastOutlierPrn)) {
|
---|
1389 | delete satData.take(lastOutlierPrn);
|
---|
1390 | }
|
---|
1391 | return success;
|
---|
1392 | }
|
---|
1393 |
|
---|
1394 | }
|
---|
1395 |
|
---|
1396 | return failure;
|
---|
1397 | }
|
---|