1 | #include <sstream>
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2 | #include <iostream>
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3 | #include <iomanip>
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4 | #include <cstring>
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5 |
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6 | #include <newmatio.h>
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7 |
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8 | #include "ephemeris.h"
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9 | #include "bncutils.h"
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10 | #include "bnctime.h"
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11 | #include "bnccore.h"
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12 | #include "bncutils.h"
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13 | #include "satObs.h"
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14 | #include "pppInclude.h"
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15 | #include "pppModel.h"
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16 |
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17 | using namespace std;
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18 |
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19 | // Constructor
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20 | ////////////////////////////////////////////////////////////////////////////
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21 | t_eph::t_eph() {
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22 | _checkState = unchecked;
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23 | _orbCorr = 0;
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24 | _clkCorr = 0;
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25 | }
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26 | // Destructor
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27 | ////////////////////////////////////////////////////////////////////////////
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28 | t_eph::~t_eph() {
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29 | if (_orbCorr)
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30 | delete _orbCorr;
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31 | if (_clkCorr)
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32 | delete _clkCorr;
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33 | }
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34 |
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35 | //
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36 | ////////////////////////////////////////////////////////////////////////////
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37 | void t_eph::setOrbCorr(const t_orbCorr* orbCorr) {
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38 | if (_orbCorr) {
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39 | delete _orbCorr;
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40 | _orbCorr = 0;
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41 | }
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42 | _orbCorr = new t_orbCorr(*orbCorr);
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43 | }
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44 |
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45 | //
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46 | ////////////////////////////////////////////////////////////////////////////
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47 | void t_eph::setClkCorr(const t_clkCorr* clkCorr) {
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48 | if (_clkCorr) {
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49 | delete _clkCorr;
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50 | _clkCorr = 0;
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51 | }
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52 | _clkCorr = new t_clkCorr(*clkCorr);
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53 | }
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54 |
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55 | //
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56 | ////////////////////////////////////////////////////////////////////////////
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57 | t_irc t_eph::getCrd(const bncTime& tt, ColumnVector& xc, ColumnVector& vv, bool useCorr) const {
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58 |
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59 | if (_checkState == bad ||
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60 | _checkState == unhealthy ||
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61 | _checkState == outdated) {
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62 | return failure;
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63 | }
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64 |
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65 | xc.ReSize(6);
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66 | vv.ReSize(3);
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67 | if (position(tt.gpsw(), tt.gpssec(), xc.data(), vv.data()) != success) {
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68 | return failure;
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69 | }
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70 | if (useCorr) {
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71 | if (_orbCorr && _clkCorr) {
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72 | double dtO = tt - _orbCorr->_time;
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73 | if (_orbCorr->_updateInt) {
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74 | dtO -= (0.5 * ssrUpdateInt[_orbCorr->_updateInt]);
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75 | }
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76 | ColumnVector dx(3);
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77 | dx[0] = _orbCorr->_xr[0] + _orbCorr->_dotXr[0] * dtO;
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78 | dx[1] = _orbCorr->_xr[1] + _orbCorr->_dotXr[1] * dtO;
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79 | dx[2] = _orbCorr->_xr[2] + _orbCorr->_dotXr[2] * dtO;
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80 |
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81 | RSW_to_XYZ(xc.Rows(1,3), vv.Rows(1,3), dx, dx);
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82 |
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83 | xc[0] -= dx[0];
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84 | xc[1] -= dx[1];
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85 | xc[2] -= dx[2];
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86 |
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87 | ColumnVector dv(3);
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88 | RSW_to_XYZ(xc.Rows(1,3), vv.Rows(1,3), _orbCorr->_dotXr, dv);
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89 |
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90 | vv[0] -= dv[0];
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91 | vv[1] -= dv[1];
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92 | vv[2] -= dv[2];
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93 |
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94 | double dtC = tt - _clkCorr->_time;
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95 | if (_clkCorr->_updateInt) {
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96 | dtC -= (0.5 * ssrUpdateInt[_clkCorr->_updateInt]);
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97 | }
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98 | xc[3] += _clkCorr->_dClk + _clkCorr->_dotDClk * dtC + _clkCorr->_dotDotDClk * dtC * dtC;
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99 | }
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100 | else {
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101 | return failure;
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102 | }
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103 | }
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104 | return success;
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105 | }
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106 |
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107 | //
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108 | //////////////////////////////////////////////////////////////////////////////
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109 | QString t_eph::rinexDateStr(const bncTime& tt, const t_prn& prn, double version) {
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110 | QString prnStr(prn.toString().c_str());
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111 | return rinexDateStr(tt, prnStr, version);
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112 | }
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113 |
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114 | //
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115 | //////////////////////////////////////////////////////////////////////////////
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116 | QString t_eph::rinexDateStr(const bncTime& tt, const QString& prnStr, double version) {
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117 |
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118 | QString datStr;
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119 |
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120 | unsigned year, month, day, hour, min;
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121 | double sec;
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122 | tt.civil_date(year, month, day);
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123 | tt.civil_time(hour, min, sec);
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124 |
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125 | QTextStream out(&datStr);
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126 |
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127 | if (version < 3.0) {
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128 | QString prnHlp = prnStr.mid(1,2); if (prnHlp[0] == '0') prnHlp[0] = ' ';
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129 | out << prnHlp << QString(" %1 %2 %3 %4 %5%6")
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130 | .arg(year % 100, 2, 10, QChar('0'))
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131 | .arg(month, 2)
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132 | .arg(day, 2)
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133 | .arg(hour, 2)
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134 | .arg(min, 2)
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135 | .arg(sec, 5, 'f',1);
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136 | }
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137 | else {
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138 | out << prnStr << QString(" %1 %2 %3 %4 %5 %6")
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139 | .arg(year, 4)
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140 | .arg(month, 2, 10, QChar('0'))
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141 | .arg(day, 2, 10, QChar('0'))
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142 | .arg(hour, 2, 10, QChar('0'))
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143 | .arg(min, 2, 10, QChar('0'))
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144 | .arg(int(sec), 2, 10, QChar('0'));
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145 | }
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146 |
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147 | return datStr;
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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_ephGPS::t_ephGPS(double rnxVersion, const QStringList& lines) {
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153 |
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154 | const int nLines = 8;
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155 |
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156 | if (lines.size() != nLines) {
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157 | _checkState = bad;
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158 | return;
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159 | }
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160 |
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161 | // RINEX Format
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162 | // ------------
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163 | int fieldLen = 19;
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164 |
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165 | int pos[4];
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166 | pos[0] = (rnxVersion <= 2.12) ? 3 : 4;
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167 | pos[1] = pos[0] + fieldLen;
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168 | pos[2] = pos[1] + fieldLen;
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169 | pos[3] = pos[2] + fieldLen;
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170 |
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171 | // Read eight lines
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172 | // ----------------
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173 | for (int iLine = 0; iLine < nLines; iLine++) {
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174 | QString line = lines[iLine];
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175 |
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176 | if ( iLine == 0 ) {
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177 | QTextStream in(line.left(pos[1]).toLatin1());
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178 | int year, month, day, hour, min;
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179 | double sec;
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180 |
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181 | QString prnStr, n;
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182 | in >> prnStr;
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183 |
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184 | if (prnStr.size() == 1 &&
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185 | (prnStr[0] == 'G' ||
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186 | prnStr[0] == 'J' ||
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187 | prnStr[0] == 'I')) {
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188 | in >> n;
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189 | prnStr.append(n);
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190 | }
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191 |
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192 | in >> year >> month >> day >> hour >> min >> sec;
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193 | if (prnStr.at(0) == 'G') {
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194 | _prn.set('G', prnStr.mid(1).toInt());
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195 | }
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196 | else if (prnStr.at(0) == 'J') {
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197 | _prn.set('J', prnStr.mid(1).toInt());
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198 | }
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199 | else if (prnStr.at(0) == 'I') {
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200 | _prn.set('I', prnStr.mid(1).toInt());
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201 | }
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202 | else {
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203 | _prn.set('G', prnStr.toInt());
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204 | }
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205 |
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206 | if (year < 80) {
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207 | year += 2000;
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208 | }
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209 | else if (year < 100) {
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210 | year += 1900;
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211 | }
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212 |
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213 | _TOC.set(year, month, day, hour, min, sec);
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214 |
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215 | if ( readDbl(line, pos[1], fieldLen, _clock_bias ) ||
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216 | readDbl(line, pos[2], fieldLen, _clock_drift ) ||
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217 | readDbl(line, pos[3], fieldLen, _clock_driftrate) ) {
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218 | _checkState = bad;
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219 | return;
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220 | }
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221 | }
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222 |
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223 | else if ( iLine == 1 ) {
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224 | if ( readDbl(line, pos[0], fieldLen, _IODE ) ||
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225 | readDbl(line, pos[1], fieldLen, _Crs ) ||
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226 | readDbl(line, pos[2], fieldLen, _Delta_n) ||
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227 | readDbl(line, pos[3], fieldLen, _M0 ) ) {
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228 | _checkState = bad;
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229 | return;
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230 | }
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231 | }
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232 |
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233 | else if ( iLine == 2 ) {
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234 | if ( readDbl(line, pos[0], fieldLen, _Cuc ) ||
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235 | readDbl(line, pos[1], fieldLen, _e ) ||
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236 | readDbl(line, pos[2], fieldLen, _Cus ) ||
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237 | readDbl(line, pos[3], fieldLen, _sqrt_A) ) {
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238 | _checkState = bad;
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239 | return;
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240 | }
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241 | }
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242 |
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243 | else if ( iLine == 3 ) {
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244 | if ( readDbl(line, pos[0], fieldLen, _TOEsec) ||
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245 | readDbl(line, pos[1], fieldLen, _Cic ) ||
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246 | readDbl(line, pos[2], fieldLen, _OMEGA0) ||
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247 | readDbl(line, pos[3], fieldLen, _Cis ) ) {
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248 | _checkState = bad;
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249 | return;
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250 | }
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251 | }
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252 |
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253 | else if ( iLine == 4 ) {
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254 | if ( readDbl(line, pos[0], fieldLen, _i0 ) ||
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255 | readDbl(line, pos[1], fieldLen, _Crc ) ||
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256 | readDbl(line, pos[2], fieldLen, _omega ) ||
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257 | readDbl(line, pos[3], fieldLen, _OMEGADOT) ) {
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258 | _checkState = bad;
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259 | return;
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260 | }
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261 | }
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262 |
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263 | else if ( iLine == 5 && type() != t_eph::IRNSS) {
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264 | if ( readDbl(line, pos[0], fieldLen, _IDOT ) ||
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265 | readDbl(line, pos[1], fieldLen, _L2Codes) ||
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266 | readDbl(line, pos[2], fieldLen, _TOEweek ) ||
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267 | readDbl(line, pos[3], fieldLen, _L2PFlag) ) {
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268 | _checkState = bad;
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269 | return;
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270 | }
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271 | }
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272 | else if ( iLine == 5 && type() == t_eph::IRNSS) {
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273 | if ( readDbl(line, pos[0], fieldLen, _IDOT ) ||
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274 | readDbl(line, pos[2], fieldLen, _TOEweek) ) {
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275 | _checkState = bad;
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276 | return;
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277 | }
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278 | }
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279 |
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280 | else if ( iLine == 6 && type() != t_eph::IRNSS) {
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281 | if ( readDbl(line, pos[0], fieldLen, _ura ) ||
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282 | readDbl(line, pos[1], fieldLen, _health) ||
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283 | readDbl(line, pos[2], fieldLen, _TGD ) ||
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284 | readDbl(line, pos[3], fieldLen, _IODC ) ) {
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285 | _checkState = bad;
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286 | return;
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287 | }
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288 | }
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289 | else if ( iLine == 6 && type() == t_eph::IRNSS) {
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290 | if ( readDbl(line, pos[0], fieldLen, _ura ) ||
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291 | readDbl(line, pos[1], fieldLen, _health) ||
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292 | readDbl(line, pos[2], fieldLen, _TGD ) ) {
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293 | _checkState = bad;
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294 | return;
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295 | }
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296 | }
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297 | else if ( iLine == 7 ) {
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298 | if ( readDbl(line, pos[0], fieldLen, _TOT) ) {
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299 | _checkState = bad;
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300 | return;
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301 | }
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302 | // fitInterval is not valid for IRNSS
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303 | if (type() != t_eph::IRNSS) {
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304 | double fitIntervalRnx;
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305 | readDbl(line, pos[1], fieldLen, fitIntervalRnx);
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306 | if (type() == t_eph::GPS) { // in RINEX specified allways as time period for GPS
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307 | _fitInterval = fitIntervalRnx;
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308 | } else if (type() == t_eph::QZSS) { // specified as flag for QZSS
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309 | if (rnxVersion == 3.02) {
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310 | _fitInterval = fitIntervalRnx; // specified as time period
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311 | }
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312 | else {
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313 | _fitInterval = fitIntervalFromFlag(fitIntervalRnx, _IODC, t_eph::QZSS);
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314 | }
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315 | }
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316 | }
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317 | }
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318 | }
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319 | }
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320 |
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321 | // Compute GPS Satellite Position (virtual)
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322 | ////////////////////////////////////////////////////////////////////////////
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323 | t_irc t_ephGPS::position(int GPSweek, double GPSweeks, double* xc, double* vv) const {
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324 |
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325 | static const double omegaEarth = 7292115.1467e-11;
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326 | static const double gmGRS = 398.6005e12;
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327 |
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328 | memset(xc, 0, 6*sizeof(double));
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329 | memset(vv, 0, 3*sizeof(double));
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330 |
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331 | double a0 = _sqrt_A * _sqrt_A;
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332 | if (a0 == 0) {
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333 | return failure;
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334 | }
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335 |
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336 | double n0 = sqrt(gmGRS/(a0*a0*a0));
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337 |
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338 | bncTime tt(GPSweek, GPSweeks);
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339 | double tk = tt - bncTime(int(_TOEweek), _TOEsec);
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340 |
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341 | double n = n0 + _Delta_n;
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342 | double M = _M0 + n*tk;
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343 | double E = M;
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344 | double E_last;
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345 | int nLoop = 0;
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346 | do {
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347 | E_last = E;
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348 | E = M + _e*sin(E);
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349 |
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350 | if (++nLoop == 100) {
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351 | return failure;
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352 | }
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353 | } while ( fabs(E-E_last)*a0 > 0.001);
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354 | double v = 2.0*atan( sqrt( (1.0 + _e)/(1.0 - _e) )*tan( E/2 ) );
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355 | double u0 = v + _omega;
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356 | double sin2u0 = sin(2*u0);
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357 | double cos2u0 = cos(2*u0);
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358 | double r = a0*(1 - _e*cos(E)) + _Crc*cos2u0 + _Crs*sin2u0;
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359 | double i = _i0 + _IDOT*tk + _Cic*cos2u0 + _Cis*sin2u0;
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360 | double u = u0 + _Cuc*cos2u0 + _Cus*sin2u0;
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361 | double xp = r*cos(u);
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362 | double yp = r*sin(u);
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363 | double OM = _OMEGA0 + (_OMEGADOT - omegaEarth)*tk -
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364 | omegaEarth*_TOEsec;
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365 |
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366 | double sinom = sin(OM);
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367 | double cosom = cos(OM);
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368 | double sini = sin(i);
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369 | double cosi = cos(i);
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370 | xc[0] = xp*cosom - yp*cosi*sinom;
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371 | xc[1] = xp*sinom + yp*cosi*cosom;
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372 | xc[2] = yp*sini;
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373 |
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374 | double tc = tt - _TOC;
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375 | xc[3] = _clock_bias + _clock_drift*tc + _clock_driftrate*tc*tc;
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376 |
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377 | // Velocity
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378 | // --------
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379 | double tanv2 = tan(v/2);
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380 | double dEdM = 1 / (1 - _e*cos(E));
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381 | double dotv = sqrt((1.0 + _e)/(1.0 - _e)) / cos(E/2)/cos(E/2) / (1 + tanv2*tanv2)
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382 | * dEdM * n;
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383 | double dotu = dotv + (-_Cuc*sin2u0 + _Cus*cos2u0)*2*dotv;
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384 | double dotom = _OMEGADOT - omegaEarth;
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385 | double doti = _IDOT + (-_Cic*sin2u0 + _Cis*cos2u0)*2*dotv;
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386 | double dotr = a0 * _e*sin(E) * dEdM * n
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387 | + (-_Crc*sin2u0 + _Crs*cos2u0)*2*dotv;
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388 | double dotx = dotr*cos(u) - r*sin(u)*dotu;
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389 | double doty = dotr*sin(u) + r*cos(u)*dotu;
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390 |
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391 | vv[0] = cosom *dotx - cosi*sinom *doty // dX / dr
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392 | - xp*sinom*dotom - yp*cosi*cosom*dotom // dX / dOMEGA
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393 | + yp*sini*sinom*doti; // dX / di
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394 |
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395 | vv[1] = sinom *dotx + cosi*cosom *doty
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396 | + xp*cosom*dotom - yp*cosi*sinom*dotom
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397 | - yp*sini*cosom*doti;
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398 |
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399 | vv[2] = sini *doty + yp*cosi *doti;
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400 |
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401 | // Relativistic Correction
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402 | // -----------------------
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403 | xc[3] -= 4.442807633e-10 * _e * sqrt(a0) *sin(E);
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404 |
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405 | xc[4] = _clock_drift + _clock_driftrate*tc;
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406 | xc[5] = _clock_driftrate;
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407 |
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408 | return success;
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409 | }
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410 |
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411 | // RINEX Format String
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412 | //////////////////////////////////////////////////////////////////////////////
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413 | QString t_ephGPS::toString(double version) const {
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414 |
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415 | QString rnxStr = rinexDateStr(_TOC, _prn, version);
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416 |
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417 | QTextStream out(&rnxStr);
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418 |
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419 | out << QString("%1%2%3\n")
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420 | .arg(_clock_bias, 19, 'e', 12)
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421 | .arg(_clock_drift, 19, 'e', 12)
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422 | .arg(_clock_driftrate, 19, 'e', 12);
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423 |
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424 | QString fmt = version < 3.0 ? " %1%2%3%4\n" : " %1%2%3%4\n";
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425 |
|
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426 | out << QString(fmt)
|
---|
427 | .arg(_IODE, 19, 'e', 12)
|
---|
428 | .arg(_Crs, 19, 'e', 12)
|
---|
429 | .arg(_Delta_n, 19, 'e', 12)
|
---|
430 | .arg(_M0, 19, 'e', 12);
|
---|
431 |
|
---|
432 | out << QString(fmt)
|
---|
433 | .arg(_Cuc, 19, 'e', 12)
|
---|
434 | .arg(_e, 19, 'e', 12)
|
---|
435 | .arg(_Cus, 19, 'e', 12)
|
---|
436 | .arg(_sqrt_A, 19, 'e', 12);
|
---|
437 |
|
---|
438 | out << QString(fmt)
|
---|
439 | .arg(_TOEsec, 19, 'e', 12)
|
---|
440 | .arg(_Cic, 19, 'e', 12)
|
---|
441 | .arg(_OMEGA0, 19, 'e', 12)
|
---|
442 | .arg(_Cis, 19, 'e', 12);
|
---|
443 |
|
---|
444 | out << QString(fmt)
|
---|
445 | .arg(_i0, 19, 'e', 12)
|
---|
446 | .arg(_Crc, 19, 'e', 12)
|
---|
447 | .arg(_omega, 19, 'e', 12)
|
---|
448 | .arg(_OMEGADOT, 19, 'e', 12);
|
---|
449 |
|
---|
450 | if (type() == t_eph::IRNSS) {
|
---|
451 | out << QString(fmt)
|
---|
452 | .arg(_IDOT, 19, 'e', 12)
|
---|
453 | .arg(0.0, 19, 'e', 12)
|
---|
454 | .arg(_TOEweek, 19, 'e', 12)
|
---|
455 | .arg(0.0, 19, 'e', 12);
|
---|
456 | }
|
---|
457 | else {
|
---|
458 | out << QString(fmt)
|
---|
459 | .arg(_IDOT, 19, 'e', 12)
|
---|
460 | .arg(_L2Codes, 19, 'e', 12)
|
---|
461 | .arg(_TOEweek, 19, 'e', 12)
|
---|
462 | .arg(_L2PFlag, 19, 'e', 12);
|
---|
463 | }
|
---|
464 |
|
---|
465 | if (type() == t_eph::IRNSS) {
|
---|
466 | out << QString(fmt)
|
---|
467 | .arg(_ura, 19, 'e', 12)
|
---|
468 | .arg(_health, 19, 'e', 12)
|
---|
469 | .arg(_TGD, 19, 'e', 12)
|
---|
470 | .arg(0.0, 19, 'e', 12);
|
---|
471 | }
|
---|
472 | else {
|
---|
473 | out << QString(fmt)
|
---|
474 | .arg(_ura, 19, 'e', 12)
|
---|
475 | .arg(_health, 19, 'e', 12)
|
---|
476 | .arg(_TGD, 19, 'e', 12)
|
---|
477 | .arg(_IODC, 19, 'e', 12);
|
---|
478 | }
|
---|
479 |
|
---|
480 | double tot = _TOT;
|
---|
481 | if (tot == 0.9999e9 && version < 3.0) {
|
---|
482 | tot = 0.0;
|
---|
483 | }
|
---|
484 | // fitInterval
|
---|
485 | if (type() == t_eph::IRNSS) {// not valid for IRNSS
|
---|
486 | out << QString(fmt)
|
---|
487 | .arg(tot, 19, 'e', 12)
|
---|
488 | .arg(0.0, 19, 'e', 12)
|
---|
489 | .arg("", 19, QChar(' '))
|
---|
490 | .arg("", 19, QChar(' '));
|
---|
491 | }
|
---|
492 | else {
|
---|
493 | // for GPS and QZSS in version 3.02 specified in hours
|
---|
494 | double fitIntervalRnx = _fitInterval;
|
---|
495 | // otherwise specified as flag
|
---|
496 | if (type() == t_eph::QZSS && version != 3.02) {
|
---|
497 | (_fitInterval == 2.0) ? fitIntervalRnx = 0.0 : fitIntervalRnx = 1.0;
|
---|
498 | }
|
---|
499 | out << QString(fmt)
|
---|
500 | .arg(tot, 19, 'e', 12)
|
---|
501 | .arg(fitIntervalRnx, 19, 'e', 12)
|
---|
502 | .arg("", 19, QChar(' '))
|
---|
503 | .arg("", 19, QChar(' '));
|
---|
504 | }
|
---|
505 | return rnxStr;
|
---|
506 | }
|
---|
507 |
|
---|
508 | // Constructor
|
---|
509 | //////////////////////////////////////////////////////////////////////////////
|
---|
510 | t_ephGlo::t_ephGlo(double rnxVersion, const QStringList& lines) {
|
---|
511 |
|
---|
512 | int nLines = 4;
|
---|
513 | if (rnxVersion >= 3.05) {
|
---|
514 | nLines += 1;
|
---|
515 | _flags_unknown = false;
|
---|
516 | }
|
---|
517 | else {
|
---|
518 | _M_delta_tau = 0.9999e9; // unknown
|
---|
519 | _M_FT = 1.5e1; // unknown
|
---|
520 | _flags_unknown = true;
|
---|
521 | }
|
---|
522 |
|
---|
523 | if (lines.size() != nLines) {
|
---|
524 | _checkState = bad;
|
---|
525 | return;
|
---|
526 | }
|
---|
527 |
|
---|
528 | // RINEX Format
|
---|
529 | // ------------
|
---|
530 | int fieldLen = 19;
|
---|
531 | double statusflags = 0.0;
|
---|
532 | double healthflags = 0.0;
|
---|
533 |
|
---|
534 | int pos[4];
|
---|
535 | pos[0] = (rnxVersion <= 2.12) ? 3 : 4;
|
---|
536 | pos[1] = pos[0] + fieldLen;
|
---|
537 | pos[2] = pos[1] + fieldLen;
|
---|
538 | pos[3] = pos[2] + fieldLen;
|
---|
539 |
|
---|
540 | // Read four lines
|
---|
541 | // ---------------
|
---|
542 | for (int iLine = 0; iLine < nLines; iLine++) {
|
---|
543 | QString line = lines[iLine];
|
---|
544 |
|
---|
545 | if ( iLine == 0 ) {
|
---|
546 | QTextStream in(line.left(pos[1]).toLatin1());
|
---|
547 |
|
---|
548 | int year, month, day, hour, min;
|
---|
549 | double sec;
|
---|
550 |
|
---|
551 | QString prnStr, n;
|
---|
552 | in >> prnStr;
|
---|
553 | if (prnStr.size() == 1 && prnStr[0] == 'R') {
|
---|
554 | in >> n;
|
---|
555 | prnStr.append(n);
|
---|
556 | }
|
---|
557 | in >> year >> month >> day >> hour >> min >> sec;
|
---|
558 | if (prnStr.at(0) == 'R') {
|
---|
559 | _prn.set('R', prnStr.mid(1).toInt());
|
---|
560 | }
|
---|
561 | else {
|
---|
562 | _prn.set('R', prnStr.toInt());
|
---|
563 | }
|
---|
564 |
|
---|
565 | if (year < 80) {
|
---|
566 | year += 2000;
|
---|
567 | }
|
---|
568 | else if (year < 100) {
|
---|
569 | year += 1900;
|
---|
570 | }
|
---|
571 |
|
---|
572 | _gps_utc = gnumleap(year, month, day);
|
---|
573 |
|
---|
574 | _TOC.set(year, month, day, hour, min, sec);
|
---|
575 | _TOC = _TOC + _gps_utc;
|
---|
576 | int nd = int((_TOC.gpssec())) / (24.0*60.0*60.0);
|
---|
577 | if ( readDbl(line, pos[1], fieldLen, _tau ) ||
|
---|
578 | readDbl(line, pos[2], fieldLen, _gamma) ||
|
---|
579 | readDbl(line, pos[3], fieldLen, _tki ) ) {
|
---|
580 | _checkState = bad;
|
---|
581 | return;
|
---|
582 | }
|
---|
583 | _tki -= nd * 86400.0;
|
---|
584 | _tau = -_tau;
|
---|
585 | }
|
---|
586 |
|
---|
587 | else if ( iLine == 1 ) {
|
---|
588 | if ( readDbl(line, pos[0], fieldLen, _x_pos ) ||
|
---|
589 | readDbl(line, pos[1], fieldLen, _x_velocity ) ||
|
---|
590 | readDbl(line, pos[2], fieldLen, _x_acceleration) ||
|
---|
591 | readDbl(line, pos[3], fieldLen, _health ) ) {
|
---|
592 | _checkState = bad;
|
---|
593 | return;
|
---|
594 | }
|
---|
595 | }
|
---|
596 |
|
---|
597 | else if ( iLine == 2 ) {
|
---|
598 | if ( readDbl(line, pos[0], fieldLen, _y_pos ) ||
|
---|
599 | readDbl(line, pos[1], fieldLen, _y_velocity ) ||
|
---|
600 | readDbl(line, pos[2], fieldLen, _y_acceleration ) ||
|
---|
601 | readDbl(line, pos[3], fieldLen, _frequency_number) ) {
|
---|
602 | _checkState = bad;
|
---|
603 | return;
|
---|
604 | }
|
---|
605 | }
|
---|
606 |
|
---|
607 | else if ( iLine == 3 ) {
|
---|
608 | if ( readDbl(line, pos[0], fieldLen, _z_pos ) ||
|
---|
609 | readDbl(line, pos[1], fieldLen, _z_velocity ) ||
|
---|
610 | readDbl(line, pos[2], fieldLen, _z_acceleration) ||
|
---|
611 | readDbl(line, pos[3], fieldLen, _E ) ) {
|
---|
612 | _checkState = bad;
|
---|
613 | return;
|
---|
614 | }
|
---|
615 | }
|
---|
616 |
|
---|
617 | else if ( iLine == 4 ) {
|
---|
618 | if ( readDbl(line, pos[0], fieldLen, statusflags ) ||
|
---|
619 | readDbl(line, pos[1], fieldLen, _M_delta_tau ) ||
|
---|
620 | readDbl(line, pos[2], fieldLen, _M_FT ) ||
|
---|
621 | readDbl(line, pos[3], fieldLen, healthflags ) ) {
|
---|
622 | _checkState = bad;
|
---|
623 | return;
|
---|
624 | }
|
---|
625 | else {
|
---|
626 | // status flags
|
---|
627 | // ============
|
---|
628 | // bit 0-1
|
---|
629 | _M_P = double(bitExtracted(statusflags, 2, 0));
|
---|
630 | // bit 2-3
|
---|
631 | _P1 = double(bitExtracted(statusflags, 2, 2));
|
---|
632 | // bit 4
|
---|
633 | _P2 = double(bitExtracted(statusflags, 1, 4));
|
---|
634 | // bit 5
|
---|
635 | _P3 = double(bitExtracted(statusflags, 1, 5));
|
---|
636 | // bit 6
|
---|
637 | _M_P4 = double(bitExtracted(statusflags, 1, 6));
|
---|
638 | // bit 7-8
|
---|
639 | _M_M = double(bitExtracted(statusflags, 2, 7));
|
---|
640 | /// GLO M/K exclusive flags/values only valid if flag M is set to '01'
|
---|
641 | if (!_M_M) {
|
---|
642 | _M_P4 = 0.0;
|
---|
643 | _M_P = 0.0;
|
---|
644 | }
|
---|
645 | // health flags
|
---|
646 | // ============
|
---|
647 | // bit 0 (is to be ignored, if bit 1 is zero)
|
---|
648 | _almanac_health = double(bitExtracted(healthflags, 1, 0));
|
---|
649 | // bit 1
|
---|
650 | _almanac_health_availablility_indicator = double(bitExtracted(healthflags, 1, 1));
|
---|
651 | // bit 2
|
---|
652 | _M_l3 = double(bitExtracted(healthflags, 1, 2));
|
---|
653 | }
|
---|
654 | }
|
---|
655 | }
|
---|
656 |
|
---|
657 | // Initialize status vector
|
---|
658 | // ------------------------
|
---|
659 | _tt = _TOC;
|
---|
660 | _xv.ReSize(6); _xv = 0.0;
|
---|
661 | _xv(1) = _x_pos * 1.e3;
|
---|
662 | _xv(2) = _y_pos * 1.e3;
|
---|
663 | _xv(3) = _z_pos * 1.e3;
|
---|
664 | _xv(4) = _x_velocity * 1.e3;
|
---|
665 | _xv(5) = _y_velocity * 1.e3;
|
---|
666 | _xv(6) = _z_velocity * 1.e3;
|
---|
667 | }
|
---|
668 |
|
---|
669 | // Compute Glonass Satellite Position (virtual)
|
---|
670 | ////////////////////////////////////////////////////////////////////////////
|
---|
671 | t_irc t_ephGlo::position(int GPSweek, double GPSweeks, double* xc, double* vv) const {
|
---|
672 |
|
---|
673 | static const double nominalStep = 10.0;
|
---|
674 |
|
---|
675 | memset(xc, 0, 6*sizeof(double));
|
---|
676 | memset(vv, 0, 3*sizeof(double));
|
---|
677 |
|
---|
678 | double dtPos = bncTime(GPSweek, GPSweeks) - _tt;
|
---|
679 |
|
---|
680 | if (fabs(dtPos) > 24 * 3600.0) {
|
---|
681 | return failure;
|
---|
682 | }
|
---|
683 |
|
---|
684 | int nSteps = int(fabs(dtPos) / nominalStep) + 1;
|
---|
685 | double step = dtPos / nSteps;
|
---|
686 |
|
---|
687 | double acc[3];
|
---|
688 | acc[0] = _x_acceleration * 1.e3;
|
---|
689 | acc[1] = _y_acceleration * 1.e3;
|
---|
690 | acc[2] = _z_acceleration * 1.e3;
|
---|
691 |
|
---|
692 | for (int ii = 1; ii <= nSteps; ii++) {
|
---|
693 | _xv = rungeKutta4(_tt.gpssec(), _xv, step, acc, glo_deriv);
|
---|
694 | _tt = _tt + step;
|
---|
695 | }
|
---|
696 |
|
---|
697 | // Position and Velocity
|
---|
698 | // ---------------------
|
---|
699 | xc[0] = _xv(1);
|
---|
700 | xc[1] = _xv(2);
|
---|
701 | xc[2] = _xv(3);
|
---|
702 |
|
---|
703 | vv[0] = _xv(4);
|
---|
704 | vv[1] = _xv(5);
|
---|
705 | vv[2] = _xv(6);
|
---|
706 |
|
---|
707 | // Clock Correction
|
---|
708 | // ----------------
|
---|
709 | double dtClk = bncTime(GPSweek, GPSweeks) - _TOC;
|
---|
710 | xc[3] = -_tau + _gamma * dtClk;
|
---|
711 |
|
---|
712 | xc[4] = _gamma;
|
---|
713 | xc[5] = 0.0;
|
---|
714 |
|
---|
715 | return success;
|
---|
716 | }
|
---|
717 |
|
---|
718 | // RINEX Format String
|
---|
719 | //////////////////////////////////////////////////////////////////////////////
|
---|
720 | QString t_ephGlo::toString(double version) const {
|
---|
721 |
|
---|
722 | QString rnxStr = rinexDateStr(_TOC -_gps_utc, _prn, version);
|
---|
723 | int nd = int((_TOC - _gps_utc).gpssec()) / (24.0*60.0*60.0);
|
---|
724 | QTextStream out(&rnxStr);
|
---|
725 |
|
---|
726 | out << QString("%1%2%3\n")
|
---|
727 | .arg(-_tau, 19, 'e', 12)
|
---|
728 | .arg(_gamma, 19, 'e', 12)
|
---|
729 | .arg(_tki+nd*86400.0, 19, 'e', 12);
|
---|
730 |
|
---|
731 | QString fmt = version < 3.0 ? " %1%2%3%4\n" : " %1%2%3%4\n";
|
---|
732 |
|
---|
733 | out << QString(fmt)
|
---|
734 | .arg(_x_pos, 19, 'e', 12)
|
---|
735 | .arg(_x_velocity, 19, 'e', 12)
|
---|
736 | .arg(_x_acceleration, 19, 'e', 12)
|
---|
737 | .arg(_health, 19, 'e', 12);
|
---|
738 |
|
---|
739 | out << QString(fmt)
|
---|
740 | .arg(_y_pos, 19, 'e', 12)
|
---|
741 | .arg(_y_velocity, 19, 'e', 12)
|
---|
742 | .arg(_y_acceleration, 19, 'e', 12)
|
---|
743 | .arg(_frequency_number, 19, 'e', 12);
|
---|
744 |
|
---|
745 | out << QString(fmt)
|
---|
746 | .arg(_z_pos, 19, 'e', 12)
|
---|
747 | .arg(_z_velocity, 19, 'e', 12)
|
---|
748 | .arg(_z_acceleration, 19, 'e', 12)
|
---|
749 | .arg(_E, 19, 'e', 12);
|
---|
750 |
|
---|
751 | if (version >= 3.05) {
|
---|
752 | // unknown (RINEX version < 3.05)
|
---|
753 | if (_flags_unknown) {
|
---|
754 | out << QString(fmt)
|
---|
755 | .arg("", 19, QChar(' ')) // statusflags blank if unknown
|
---|
756 | .arg(_M_delta_tau, 19, 'e', 12)
|
---|
757 | .arg(_M_FT, 19, 'e', 12)
|
---|
758 | .arg("", 19, QChar(' ')); // healthflags blank if unknown
|
---|
759 | }
|
---|
760 | else {
|
---|
761 | int statusflags = 0;
|
---|
762 | // bit 7-8
|
---|
763 | if (_M_M == 2.0) {
|
---|
764 | statusflags |= (1<<7);
|
---|
765 | }
|
---|
766 | // bit 6
|
---|
767 | if (_M_P4) {
|
---|
768 | statusflags |= (1<<6);
|
---|
769 | }
|
---|
770 | // bit 5
|
---|
771 | if (_P3) {
|
---|
772 | statusflags |= (1<<5);
|
---|
773 | }
|
---|
774 | // bit 4
|
---|
775 | if (_P2) {
|
---|
776 | statusflags |= (1<<4);
|
---|
777 | }
|
---|
778 | // bit 2-3
|
---|
779 | if (_P1 == 2.0) {
|
---|
780 | statusflags |= (1<<2);
|
---|
781 | }
|
---|
782 | else if (_P1 == 1.0) {
|
---|
783 | statusflags |= (1<<3);
|
---|
784 | }
|
---|
785 | else if (_P1 == 3.0) {
|
---|
786 | statusflags |= (1<<2);
|
---|
787 | statusflags |= (1<<3);
|
---|
788 | }
|
---|
789 | // bit 0-1
|
---|
790 | if (_M_P == 2.0) {
|
---|
791 | statusflags |= (1<<0);
|
---|
792 | }
|
---|
793 | else if (_M_P == 1.0) {
|
---|
794 | statusflags |= (1<<1);
|
---|
795 | }
|
---|
796 | else if (_M_P == 3.0) {
|
---|
797 | statusflags |= (1<<0);
|
---|
798 | statusflags |= (1<<1);
|
---|
799 | }
|
---|
800 | // health flags
|
---|
801 | // ============
|
---|
802 | int healthflags = 0;
|
---|
803 | // bit 0 (is to be ignored, if bit 1 is zero)
|
---|
804 | if (_almanac_health) {
|
---|
805 | healthflags |= (1<<0);
|
---|
806 | }
|
---|
807 | // bit 1
|
---|
808 | if (_almanac_health_availablility_indicator) {
|
---|
809 | healthflags |= (1<<1);
|
---|
810 | }
|
---|
811 | // bit 2
|
---|
812 | if (_M_l3) {
|
---|
813 | healthflags |= (1<<2);
|
---|
814 | }
|
---|
815 | out << QString(fmt)
|
---|
816 | .arg(double(statusflags), 19, 'e', 12)
|
---|
817 | .arg(_M_delta_tau, 19, 'e', 12)
|
---|
818 | .arg(_M_FT, 19, 'e', 12)
|
---|
819 | .arg(double(healthflags), 19, 'e', 12);
|
---|
820 | }
|
---|
821 | }
|
---|
822 |
|
---|
823 | return rnxStr;
|
---|
824 | }
|
---|
825 |
|
---|
826 | // Derivative of the state vector using a simple force model (static)
|
---|
827 | ////////////////////////////////////////////////////////////////////////////
|
---|
828 | ColumnVector t_ephGlo::glo_deriv(double /* tt */, const ColumnVector& xv,
|
---|
829 | double* acc) {
|
---|
830 |
|
---|
831 | // State vector components
|
---|
832 | // -----------------------
|
---|
833 | ColumnVector rr = xv.rows(1,3);
|
---|
834 | ColumnVector vv = xv.rows(4,6);
|
---|
835 |
|
---|
836 | // Acceleration
|
---|
837 | // ------------
|
---|
838 | static const double gmWGS = 398.60044e12;
|
---|
839 | static const double AE = 6378136.0;
|
---|
840 | static const double OMEGA = 7292115.e-11;
|
---|
841 | static const double C20 = -1082.6257e-6;
|
---|
842 |
|
---|
843 | double rho = rr.NormFrobenius();
|
---|
844 | double t1 = -gmWGS/(rho*rho*rho);
|
---|
845 | double t2 = 3.0/2.0 * C20 * (gmWGS*AE*AE) / (rho*rho*rho*rho*rho);
|
---|
846 | double t3 = OMEGA * OMEGA;
|
---|
847 | double t4 = 2.0 * OMEGA;
|
---|
848 | double z2 = rr(3) * rr(3);
|
---|
849 |
|
---|
850 | // Vector of derivatives
|
---|
851 | // ---------------------
|
---|
852 | ColumnVector va(6);
|
---|
853 | va(1) = vv(1);
|
---|
854 | va(2) = vv(2);
|
---|
855 | va(3) = vv(3);
|
---|
856 | va(4) = (t1 + t2*(1.0-5.0*z2/(rho*rho)) + t3) * rr(1) + t4*vv(2) + acc[0];
|
---|
857 | va(5) = (t1 + t2*(1.0-5.0*z2/(rho*rho)) + t3) * rr(2) - t4*vv(1) + acc[1];
|
---|
858 | va(6) = (t1 + t2*(3.0-5.0*z2/(rho*rho)) ) * rr(3) + acc[2];
|
---|
859 |
|
---|
860 | return va;
|
---|
861 | }
|
---|
862 |
|
---|
863 | // IOD of Glonass Ephemeris (virtual)
|
---|
864 | ////////////////////////////////////////////////////////////////////////////
|
---|
865 | unsigned int t_ephGlo::IOD() const {
|
---|
866 | bncTime tMoscow = _TOC - _gps_utc + 3 * 3600.0;
|
---|
867 | return (unsigned long)tMoscow.daysec() / 900;
|
---|
868 | }
|
---|
869 |
|
---|
870 | // Health status of Glonass Ephemeris (virtual)
|
---|
871 | ////////////////////////////////////////////////////////////////////////////
|
---|
872 | unsigned int t_ephGlo::isUnhealthy() const {
|
---|
873 |
|
---|
874 | if (_almanac_health_availablility_indicator) {
|
---|
875 | if ((_health == 0 && _almanac_health == 0) ||
|
---|
876 | (_health == 1 && _almanac_health == 0) ||
|
---|
877 | (_health == 1 && _almanac_health == 1)) {
|
---|
878 | return 1;
|
---|
879 | }
|
---|
880 | }
|
---|
881 | else if (!_almanac_health_availablility_indicator) {
|
---|
882 | if (_health) {
|
---|
883 | return 1;
|
---|
884 | }
|
---|
885 | }
|
---|
886 | return 0; /* (_health == 0 && _almanac_health == 1) or (_health == 0) */
|
---|
887 | }
|
---|
888 |
|
---|
889 | // Constructor
|
---|
890 | //////////////////////////////////////////////////////////////////////////////
|
---|
891 | t_ephGal::t_ephGal(double rnxVersion, const QStringList& lines) {
|
---|
892 | int year, month, day, hour, min;
|
---|
893 | double sec;
|
---|
894 | QString prnStr;
|
---|
895 | const int nLines = 8;
|
---|
896 | if (lines.size() != nLines) {
|
---|
897 | _checkState = bad;
|
---|
898 | return;
|
---|
899 | }
|
---|
900 |
|
---|
901 | // RINEX Format
|
---|
902 | // ------------
|
---|
903 | int fieldLen = 19;
|
---|
904 | double SVhealth = 0.0;
|
---|
905 | double datasource = 0.0;
|
---|
906 |
|
---|
907 | int pos[4];
|
---|
908 | pos[0] = (rnxVersion <= 2.12) ? 3 : 4;
|
---|
909 | pos[1] = pos[0] + fieldLen;
|
---|
910 | pos[2] = pos[1] + fieldLen;
|
---|
911 | pos[3] = pos[2] + fieldLen;
|
---|
912 |
|
---|
913 | // Read eight lines
|
---|
914 | // ----------------
|
---|
915 | for (int iLine = 0; iLine < nLines; iLine++) {
|
---|
916 | QString line = lines[iLine];
|
---|
917 |
|
---|
918 | if ( iLine == 0 ) {
|
---|
919 | QTextStream in(line.left(pos[1]).toLatin1());
|
---|
920 | QString n;
|
---|
921 | in >> prnStr;
|
---|
922 | if (prnStr.size() == 1 && prnStr[0] == 'E') {
|
---|
923 | in >> n;
|
---|
924 | prnStr.append(n);
|
---|
925 | }
|
---|
926 | in >> year >> month >> day >> hour >> min >> sec;
|
---|
927 | if (year < 80) {
|
---|
928 | year += 2000;
|
---|
929 | }
|
---|
930 | else if (year < 100) {
|
---|
931 | year += 1900;
|
---|
932 | }
|
---|
933 |
|
---|
934 | _TOC.set(year, month, day, hour, min, sec);
|
---|
935 |
|
---|
936 | if ( readDbl(line, pos[1], fieldLen, _clock_bias ) ||
|
---|
937 | readDbl(line, pos[2], fieldLen, _clock_drift ) ||
|
---|
938 | readDbl(line, pos[3], fieldLen, _clock_driftrate) ) {
|
---|
939 | _checkState = bad;
|
---|
940 | return;
|
---|
941 | }
|
---|
942 | }
|
---|
943 |
|
---|
944 | else if ( iLine == 1 ) {
|
---|
945 | if ( readDbl(line, pos[0], fieldLen, _IODnav ) ||
|
---|
946 | readDbl(line, pos[1], fieldLen, _Crs ) ||
|
---|
947 | readDbl(line, pos[2], fieldLen, _Delta_n) ||
|
---|
948 | readDbl(line, pos[3], fieldLen, _M0 ) ) {
|
---|
949 | _checkState = bad;
|
---|
950 | return;
|
---|
951 | }
|
---|
952 | }
|
---|
953 |
|
---|
954 | else if ( iLine == 2 ) {
|
---|
955 | if ( readDbl(line, pos[0], fieldLen, _Cuc ) ||
|
---|
956 | readDbl(line, pos[1], fieldLen, _e ) ||
|
---|
957 | readDbl(line, pos[2], fieldLen, _Cus ) ||
|
---|
958 | readDbl(line, pos[3], fieldLen, _sqrt_A) ) {
|
---|
959 | _checkState = bad;
|
---|
960 | return;
|
---|
961 | }
|
---|
962 | }
|
---|
963 |
|
---|
964 | else if ( iLine == 3 ) {
|
---|
965 | if ( readDbl(line, pos[0], fieldLen, _TOEsec) ||
|
---|
966 | readDbl(line, pos[1], fieldLen, _Cic ) ||
|
---|
967 | readDbl(line, pos[2], fieldLen, _OMEGA0) ||
|
---|
968 | readDbl(line, pos[3], fieldLen, _Cis ) ) {
|
---|
969 | _checkState = bad;
|
---|
970 | return;
|
---|
971 | }
|
---|
972 | }
|
---|
973 |
|
---|
974 | else if ( iLine == 4 ) {
|
---|
975 | if ( readDbl(line, pos[0], fieldLen, _i0 ) ||
|
---|
976 | readDbl(line, pos[1], fieldLen, _Crc ) ||
|
---|
977 | readDbl(line, pos[2], fieldLen, _omega ) ||
|
---|
978 | readDbl(line, pos[3], fieldLen, _OMEGADOT) ) {
|
---|
979 | _checkState = bad;
|
---|
980 | return;
|
---|
981 | }
|
---|
982 | }
|
---|
983 |
|
---|
984 | else if ( iLine == 5 ) {
|
---|
985 | if ( readDbl(line, pos[0], fieldLen, _IDOT ) ||
|
---|
986 | readDbl(line, pos[1], fieldLen, datasource) ||
|
---|
987 | readDbl(line, pos[2], fieldLen, _TOEweek ) ) {
|
---|
988 | _checkState = bad;
|
---|
989 | return;
|
---|
990 | } else {
|
---|
991 | if (int(datasource) & (1<<8)) {
|
---|
992 | _fnav = true;
|
---|
993 | _inav = false;
|
---|
994 | } else if (int(datasource) & (1<<9)) {
|
---|
995 | _fnav = false;
|
---|
996 | _inav = true;
|
---|
997 | }
|
---|
998 | _TOEweek -= 1024.0;
|
---|
999 | }
|
---|
1000 | }
|
---|
1001 |
|
---|
1002 | else if ( iLine == 6 ) {
|
---|
1003 | if ( readDbl(line, pos[0], fieldLen, _SISA ) ||
|
---|
1004 | readDbl(line, pos[1], fieldLen, SVhealth) ||
|
---|
1005 | readDbl(line, pos[2], fieldLen, _BGD_1_5A) ||
|
---|
1006 | readDbl(line, pos[3], fieldLen, _BGD_1_5B) ) {
|
---|
1007 | _checkState = bad;
|
---|
1008 | return;
|
---|
1009 | } else {
|
---|
1010 | // Bit 0
|
---|
1011 | _e1DataInValid = (int(SVhealth) & (1<<0));
|
---|
1012 | // Bit 1-2
|
---|
1013 | _E1_bHS = double((int(SVhealth) >> 1) & 0x3);
|
---|
1014 | // Bit 3
|
---|
1015 | _e5aDataInValid = (int(SVhealth) & (1<<3));
|
---|
1016 | // Bit 4-5
|
---|
1017 | _E5aHS = double((int(SVhealth) >> 4) & 0x3);
|
---|
1018 | // Bit 6
|
---|
1019 | _e5bDataInValid = (int(SVhealth) & (1<<6));
|
---|
1020 | // Bit 7-8
|
---|
1021 | _E5bHS = double((int(SVhealth) >> 7) & 0x3);
|
---|
1022 |
|
---|
1023 | if (prnStr.at(0) == 'E') {
|
---|
1024 | _prn.set('E', prnStr.mid(1).toInt(), _inav ? 1 : 0);
|
---|
1025 | }
|
---|
1026 | }
|
---|
1027 | }
|
---|
1028 |
|
---|
1029 | else if ( iLine == 7 ) {
|
---|
1030 | if ( readDbl(line, pos[0], fieldLen, _TOT) ) {
|
---|
1031 | _checkState = bad;
|
---|
1032 | return;
|
---|
1033 | }
|
---|
1034 | }
|
---|
1035 | }
|
---|
1036 | }
|
---|
1037 |
|
---|
1038 | // Compute Galileo Satellite Position (virtual)
|
---|
1039 | ////////////////////////////////////////////////////////////////////////////
|
---|
1040 | t_irc t_ephGal::position(int GPSweek, double GPSweeks, double* xc, double* vv) const {
|
---|
1041 |
|
---|
1042 | static const double omegaEarth = 7292115.1467e-11;
|
---|
1043 | static const double gmWGS = 398.6004418e12;
|
---|
1044 |
|
---|
1045 | memset(xc, 0, 6*sizeof(double));
|
---|
1046 | memset(vv, 0, 3*sizeof(double));
|
---|
1047 |
|
---|
1048 | double a0 = _sqrt_A * _sqrt_A;
|
---|
1049 | if (a0 == 0) {
|
---|
1050 | return failure;
|
---|
1051 | }
|
---|
1052 |
|
---|
1053 | double n0 = sqrt(gmWGS/(a0*a0*a0));
|
---|
1054 |
|
---|
1055 | bncTime tt(GPSweek, GPSweeks);
|
---|
1056 | double tk = tt - bncTime(_TOC.gpsw(), _TOEsec);
|
---|
1057 |
|
---|
1058 | double n = n0 + _Delta_n;
|
---|
1059 | double M = _M0 + n*tk;
|
---|
1060 | double E = M;
|
---|
1061 | double E_last;
|
---|
1062 | int nLoop = 0;
|
---|
1063 | do {
|
---|
1064 | E_last = E;
|
---|
1065 | E = M + _e*sin(E);
|
---|
1066 |
|
---|
1067 | if (++nLoop == 100) {
|
---|
1068 | return failure;
|
---|
1069 | }
|
---|
1070 | } while ( fabs(E-E_last)*a0 > 0.001 );
|
---|
1071 | double v = 2.0*atan( sqrt( (1.0 + _e)/(1.0 - _e) )*tan( E/2 ) );
|
---|
1072 | double u0 = v + _omega;
|
---|
1073 | double sin2u0 = sin(2*u0);
|
---|
1074 | double cos2u0 = cos(2*u0);
|
---|
1075 | double r = a0*(1 - _e*cos(E)) + _Crc*cos2u0 + _Crs*sin2u0;
|
---|
1076 | double i = _i0 + _IDOT*tk + _Cic*cos2u0 + _Cis*sin2u0;
|
---|
1077 | double u = u0 + _Cuc*cos2u0 + _Cus*sin2u0;
|
---|
1078 | double xp = r*cos(u);
|
---|
1079 | double yp = r*sin(u);
|
---|
1080 | double OM = _OMEGA0 + (_OMEGADOT - omegaEarth)*tk -
|
---|
1081 | omegaEarth*_TOEsec;
|
---|
1082 |
|
---|
1083 | double sinom = sin(OM);
|
---|
1084 | double cosom = cos(OM);
|
---|
1085 | double sini = sin(i);
|
---|
1086 | double cosi = cos(i);
|
---|
1087 | xc[0] = xp*cosom - yp*cosi*sinom;
|
---|
1088 | xc[1] = xp*sinom + yp*cosi*cosom;
|
---|
1089 | xc[2] = yp*sini;
|
---|
1090 |
|
---|
1091 | double tc = tt - _TOC;
|
---|
1092 | xc[3] = _clock_bias + _clock_drift*tc + _clock_driftrate*tc*tc;
|
---|
1093 |
|
---|
1094 | // Velocity
|
---|
1095 | // --------
|
---|
1096 | double tanv2 = tan(v/2);
|
---|
1097 | double dEdM = 1 / (1 - _e*cos(E));
|
---|
1098 | double dotv = sqrt((1.0 + _e)/(1.0 - _e)) / cos(E/2)/cos(E/2) / (1 + tanv2*tanv2)
|
---|
1099 | * dEdM * n;
|
---|
1100 | double dotu = dotv + (-_Cuc*sin2u0 + _Cus*cos2u0)*2*dotv;
|
---|
1101 | double dotom = _OMEGADOT - omegaEarth;
|
---|
1102 | double doti = _IDOT + (-_Cic*sin2u0 + _Cis*cos2u0)*2*dotv;
|
---|
1103 | double dotr = a0 * _e*sin(E) * dEdM * n
|
---|
1104 | + (-_Crc*sin2u0 + _Crs*cos2u0)*2*dotv;
|
---|
1105 | double dotx = dotr*cos(u) - r*sin(u)*dotu;
|
---|
1106 | double doty = dotr*sin(u) + r*cos(u)*dotu;
|
---|
1107 |
|
---|
1108 | vv[0] = cosom *dotx - cosi*sinom *doty // dX / dr
|
---|
1109 | - xp*sinom*dotom - yp*cosi*cosom*dotom // dX / dOMEGA
|
---|
1110 | + yp*sini*sinom*doti; // dX / di
|
---|
1111 |
|
---|
1112 | vv[1] = sinom *dotx + cosi*cosom *doty
|
---|
1113 | + xp*cosom*dotom - yp*cosi*sinom*dotom
|
---|
1114 | - yp*sini*cosom*doti;
|
---|
1115 |
|
---|
1116 | vv[2] = sini *doty + yp*cosi *doti;
|
---|
1117 |
|
---|
1118 | // Relativistic Correction
|
---|
1119 | // -----------------------
|
---|
1120 | xc[3] -= 4.442807309e-10 * _e * sqrt(a0) *sin(E);
|
---|
1121 |
|
---|
1122 | xc[4] = _clock_drift + _clock_driftrate*tc;
|
---|
1123 | xc[5] = _clock_driftrate;
|
---|
1124 |
|
---|
1125 | return success;
|
---|
1126 | }
|
---|
1127 |
|
---|
1128 | // Health status of Galileo Ephemeris (virtual)
|
---|
1129 | ////////////////////////////////////////////////////////////////////////////
|
---|
1130 | unsigned int t_ephGal::isUnhealthy() const {
|
---|
1131 | if (_E5aHS && _E5bHS && _E1_bHS) {
|
---|
1132 | return 1;
|
---|
1133 | }
|
---|
1134 | return 0;
|
---|
1135 | }
|
---|
1136 |
|
---|
1137 | // RINEX Format String
|
---|
1138 | //////////////////////////////////////////////////////////////////////////////
|
---|
1139 | QString t_ephGal::toString(double version) const {
|
---|
1140 |
|
---|
1141 | QString rnxStr = rinexDateStr(_TOC, _prn, version);
|
---|
1142 |
|
---|
1143 | QTextStream out(&rnxStr);
|
---|
1144 |
|
---|
1145 | out << QString("%1%2%3\n")
|
---|
1146 | .arg(_clock_bias, 19, 'e', 12)
|
---|
1147 | .arg(_clock_drift, 19, 'e', 12)
|
---|
1148 | .arg(_clock_driftrate, 19, 'e', 12);
|
---|
1149 |
|
---|
1150 | QString fmt = version < 3.0 ? " %1%2%3%4\n" : " %1%2%3%4\n";
|
---|
1151 |
|
---|
1152 | out << QString(fmt)
|
---|
1153 | .arg(_IODnav, 19, 'e', 12)
|
---|
1154 | .arg(_Crs, 19, 'e', 12)
|
---|
1155 | .arg(_Delta_n, 19, 'e', 12)
|
---|
1156 | .arg(_M0, 19, 'e', 12);
|
---|
1157 |
|
---|
1158 | out << QString(fmt)
|
---|
1159 | .arg(_Cuc, 19, 'e', 12)
|
---|
1160 | .arg(_e, 19, 'e', 12)
|
---|
1161 | .arg(_Cus, 19, 'e', 12)
|
---|
1162 | .arg(_sqrt_A, 19, 'e', 12);
|
---|
1163 |
|
---|
1164 | out << QString(fmt)
|
---|
1165 | .arg(_TOEsec, 19, 'e', 12)
|
---|
1166 | .arg(_Cic, 19, 'e', 12)
|
---|
1167 | .arg(_OMEGA0, 19, 'e', 12)
|
---|
1168 | .arg(_Cis, 19, 'e', 12);
|
---|
1169 |
|
---|
1170 | out << QString(fmt)
|
---|
1171 | .arg(_i0, 19, 'e', 12)
|
---|
1172 | .arg(_Crc, 19, 'e', 12)
|
---|
1173 | .arg(_omega, 19, 'e', 12)
|
---|
1174 | .arg(_OMEGADOT, 19, 'e', 12);
|
---|
1175 |
|
---|
1176 | int dataSource = 0;
|
---|
1177 | int SVhealth = 0;
|
---|
1178 | double BGD_1_5A = _BGD_1_5A;
|
---|
1179 | double BGD_1_5B = _BGD_1_5B;
|
---|
1180 | if (_fnav) {
|
---|
1181 | dataSource |= (1<<1);
|
---|
1182 | dataSource |= (1<<8);
|
---|
1183 | BGD_1_5B = 0.0;
|
---|
1184 | // SVhealth
|
---|
1185 | // Bit 3 : E5a DVS
|
---|
1186 | if (_e5aDataInValid) {
|
---|
1187 | SVhealth |= (1<<3);
|
---|
1188 | }
|
---|
1189 | // Bit 4-5: E5a HS
|
---|
1190 | if (_E5aHS == 1.0) {
|
---|
1191 | SVhealth |= (1<<4);
|
---|
1192 | }
|
---|
1193 | else if (_E5aHS == 2.0) {
|
---|
1194 | SVhealth |= (1<<5);
|
---|
1195 | }
|
---|
1196 | else if (_E5aHS == 3.0) {
|
---|
1197 | SVhealth |= (1<<4);
|
---|
1198 | SVhealth |= (1<<5);
|
---|
1199 | }
|
---|
1200 | }
|
---|
1201 | else if(_inav) {
|
---|
1202 | // Bit 2 and 0 are set because from MT1046 the data source cannot be determined
|
---|
1203 | // and RNXv3.03 says both can be set if the navigation messages were merged
|
---|
1204 | dataSource |= (1<<0);
|
---|
1205 | dataSource |= (1<<2);
|
---|
1206 | dataSource |= (1<<9);
|
---|
1207 | // SVhealth
|
---|
1208 | // Bit 0 : E1-B DVS
|
---|
1209 | if (_e1DataInValid) {
|
---|
1210 | SVhealth |= (1<<0);
|
---|
1211 | }
|
---|
1212 | // Bit 1-2: E1-B HS
|
---|
1213 | if (_E1_bHS == 1.0) {
|
---|
1214 | SVhealth |= (1<<1);
|
---|
1215 | }
|
---|
1216 | else if (_E1_bHS == 2.0) {
|
---|
1217 | SVhealth |= (1<<2);
|
---|
1218 | }
|
---|
1219 | else if (_E1_bHS == 3.0) {
|
---|
1220 | SVhealth |= (1<<1);
|
---|
1221 | SVhealth |= (1<<2);
|
---|
1222 | }
|
---|
1223 | // Bit 3 : E5a DVS
|
---|
1224 | if (_e5aDataInValid) {
|
---|
1225 | SVhealth |= (1<<3);
|
---|
1226 | }
|
---|
1227 | // Bit 4-5: E5a HS
|
---|
1228 | if (_E5aHS == 1.0) {
|
---|
1229 | SVhealth |= (1<<4);
|
---|
1230 | }
|
---|
1231 | else if (_E5aHS == 2.0) {
|
---|
1232 | SVhealth |= (1<<5);
|
---|
1233 | }
|
---|
1234 | else if (_E5aHS == 3.0) {
|
---|
1235 | SVhealth |= (1<<4);
|
---|
1236 | SVhealth |= (1<<5);
|
---|
1237 | }
|
---|
1238 | // Bit 6 : E5b DVS
|
---|
1239 | if (_e5bDataInValid) {
|
---|
1240 | SVhealth |= (1<<6);
|
---|
1241 | }
|
---|
1242 | // Bit 7-8: E5b HS
|
---|
1243 | if (_E5bHS == 1.0) {
|
---|
1244 | SVhealth |= (1<<7);
|
---|
1245 | }
|
---|
1246 | else if (_E5bHS == 2.0) {
|
---|
1247 | SVhealth |= (1<<8);
|
---|
1248 | }
|
---|
1249 | else if (_E5bHS == 3.0) {
|
---|
1250 | SVhealth |= (1<<7);
|
---|
1251 | SVhealth |= (1<<8);
|
---|
1252 | }
|
---|
1253 | }
|
---|
1254 |
|
---|
1255 | out << QString(fmt)
|
---|
1256 | .arg(_IDOT, 19, 'e', 12)
|
---|
1257 | .arg(double(dataSource), 19, 'e', 12)
|
---|
1258 | .arg(_TOEweek + 1024.0, 19, 'e', 12)
|
---|
1259 | .arg(0.0, 19, 'e', 12);
|
---|
1260 |
|
---|
1261 | out << QString(fmt)
|
---|
1262 | .arg(_SISA, 19, 'e', 12)
|
---|
1263 | .arg(double(SVhealth), 19, 'e', 12)
|
---|
1264 | .arg(BGD_1_5A, 19, 'e', 12)
|
---|
1265 | .arg(BGD_1_5B, 19, 'e', 12);
|
---|
1266 |
|
---|
1267 | double tot = _TOT;
|
---|
1268 | if (tot == 0.9999e9 && version < 3.0) {
|
---|
1269 | tot = 0.0;
|
---|
1270 | }
|
---|
1271 | out << QString(fmt)
|
---|
1272 | .arg(tot, 19, 'e', 12)
|
---|
1273 | .arg("", 19, QChar(' '))
|
---|
1274 | .arg("", 19, QChar(' '))
|
---|
1275 | .arg("", 19, QChar(' '));
|
---|
1276 |
|
---|
1277 | return rnxStr;
|
---|
1278 | }
|
---|
1279 |
|
---|
1280 | // Constructor
|
---|
1281 | //////////////////////////////////////////////////////////////////////////////
|
---|
1282 | t_ephSBAS::t_ephSBAS(double rnxVersion, const QStringList& lines) {
|
---|
1283 |
|
---|
1284 | const int nLines = 4;
|
---|
1285 |
|
---|
1286 | if (lines.size() != nLines) {
|
---|
1287 | _checkState = bad;
|
---|
1288 | return;
|
---|
1289 | }
|
---|
1290 |
|
---|
1291 | // RINEX Format
|
---|
1292 | // ------------
|
---|
1293 | int fieldLen = 19;
|
---|
1294 |
|
---|
1295 | int pos[4];
|
---|
1296 | pos[0] = (rnxVersion <= 2.12) ? 3 : 4;
|
---|
1297 | pos[1] = pos[0] + fieldLen;
|
---|
1298 | pos[2] = pos[1] + fieldLen;
|
---|
1299 | pos[3] = pos[2] + fieldLen;
|
---|
1300 |
|
---|
1301 | // Read four lines
|
---|
1302 | // ---------------
|
---|
1303 | for (int iLine = 0; iLine < nLines; iLine++) {
|
---|
1304 | QString line = lines[iLine];
|
---|
1305 |
|
---|
1306 | if ( iLine == 0 ) {
|
---|
1307 | QTextStream in(line.left(pos[1]).toLatin1());
|
---|
1308 |
|
---|
1309 | int year, month, day, hour, min;
|
---|
1310 | double sec;
|
---|
1311 |
|
---|
1312 | QString prnStr, n;
|
---|
1313 | in >> prnStr;
|
---|
1314 | if (prnStr.size() == 1 && prnStr[0] == 'S') {
|
---|
1315 | in >> n;
|
---|
1316 | prnStr.append(n);
|
---|
1317 | }
|
---|
1318 | in >> year >> month >> day >> hour >> min >> sec;
|
---|
1319 | if (prnStr.at(0) == 'S') {
|
---|
1320 | _prn.set('S', prnStr.mid(1).toInt());
|
---|
1321 | }
|
---|
1322 | else {
|
---|
1323 | _prn.set('S', prnStr.toInt());
|
---|
1324 | }
|
---|
1325 |
|
---|
1326 | if (year < 80) {
|
---|
1327 | year += 2000;
|
---|
1328 | }
|
---|
1329 | else if (year < 100) {
|
---|
1330 | year += 1900;
|
---|
1331 | }
|
---|
1332 |
|
---|
1333 | _TOC.set(year, month, day, hour, min, sec);
|
---|
1334 |
|
---|
1335 | if ( readDbl(line, pos[1], fieldLen, _agf0 ) ||
|
---|
1336 | readDbl(line, pos[2], fieldLen, _agf1 ) ||
|
---|
1337 | readDbl(line, pos[3], fieldLen, _TOT ) ) {
|
---|
1338 | _checkState = bad;
|
---|
1339 | return;
|
---|
1340 | }
|
---|
1341 | }
|
---|
1342 |
|
---|
1343 | else if ( iLine == 1 ) {
|
---|
1344 | if ( readDbl(line, pos[0], fieldLen, _x_pos ) ||
|
---|
1345 | readDbl(line, pos[1], fieldLen, _x_velocity ) ||
|
---|
1346 | readDbl(line, pos[2], fieldLen, _x_acceleration) ||
|
---|
1347 | readDbl(line, pos[3], fieldLen, _health ) ) {
|
---|
1348 | _checkState = bad;
|
---|
1349 | return;
|
---|
1350 | }
|
---|
1351 | }
|
---|
1352 |
|
---|
1353 | else if ( iLine == 2 ) {
|
---|
1354 | if ( readDbl(line, pos[0], fieldLen, _y_pos ) ||
|
---|
1355 | readDbl(line, pos[1], fieldLen, _y_velocity ) ||
|
---|
1356 | readDbl(line, pos[2], fieldLen, _y_acceleration ) ||
|
---|
1357 | readDbl(line, pos[3], fieldLen, _ura ) ) {
|
---|
1358 | _checkState = bad;
|
---|
1359 | return;
|
---|
1360 | }
|
---|
1361 | }
|
---|
1362 |
|
---|
1363 | else if ( iLine == 3 ) {
|
---|
1364 | double iodn;
|
---|
1365 | if ( readDbl(line, pos[0], fieldLen, _z_pos ) ||
|
---|
1366 | readDbl(line, pos[1], fieldLen, _z_velocity ) ||
|
---|
1367 | readDbl(line, pos[2], fieldLen, _z_acceleration) ||
|
---|
1368 | readDbl(line, pos[3], fieldLen, iodn ) ) {
|
---|
1369 | _checkState = bad;
|
---|
1370 | return;
|
---|
1371 | } else {
|
---|
1372 | _IODN = int(iodn);
|
---|
1373 | }
|
---|
1374 | }
|
---|
1375 | }
|
---|
1376 |
|
---|
1377 | _x_pos *= 1.e3;
|
---|
1378 | _y_pos *= 1.e3;
|
---|
1379 | _z_pos *= 1.e3;
|
---|
1380 | _x_velocity *= 1.e3;
|
---|
1381 | _y_velocity *= 1.e3;
|
---|
1382 | _z_velocity *= 1.e3;
|
---|
1383 | _x_acceleration *= 1.e3;
|
---|
1384 | _y_acceleration *= 1.e3;
|
---|
1385 | _z_acceleration *= 1.e3;
|
---|
1386 | }
|
---|
1387 |
|
---|
1388 | // IOD of SBAS Ephemeris (virtual)
|
---|
1389 | ////////////////////////////////////////////////////////////////////////////
|
---|
1390 |
|
---|
1391 | unsigned int t_ephSBAS::IOD() const {
|
---|
1392 | unsigned char buffer[80];
|
---|
1393 | int size = 0;
|
---|
1394 | int numbits = 0;
|
---|
1395 | long long bitbuffer = 0;
|
---|
1396 | unsigned char *startbuffer = buffer;
|
---|
1397 |
|
---|
1398 | SBASADDBITSFLOAT(30, this->_x_pos, 0.08)
|
---|
1399 | SBASADDBITSFLOAT(30, this->_y_pos, 0.08)
|
---|
1400 | SBASADDBITSFLOAT(25, this->_z_pos, 0.4)
|
---|
1401 | SBASADDBITSFLOAT(17, this->_x_velocity, 0.000625)
|
---|
1402 | SBASADDBITSFLOAT(17, this->_y_velocity, 0.000625)
|
---|
1403 | SBASADDBITSFLOAT(18, this->_z_velocity, 0.004)
|
---|
1404 | SBASADDBITSFLOAT(10, this->_x_acceleration, 0.0000125)
|
---|
1405 | SBASADDBITSFLOAT(10, this->_y_acceleration, 0.0000125)
|
---|
1406 | SBASADDBITSFLOAT(10, this->_z_acceleration, 0.0000625)
|
---|
1407 | SBASADDBITSFLOAT(12, this->_agf0, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<1))
|
---|
1408 | SBASADDBITSFLOAT(8, this->_agf1, 1.0/static_cast<double>(1<<30)/static_cast<double>(1<<10))
|
---|
1409 | SBASADDBITS(5,0); // the last byte is filled by 0-bits to obtain a length of an integer multiple of 8
|
---|
1410 |
|
---|
1411 | return CRC24(size, startbuffer);
|
---|
1412 | }
|
---|
1413 |
|
---|
1414 | // Compute SBAS Satellite Position (virtual)
|
---|
1415 | ////////////////////////////////////////////////////////////////////////////
|
---|
1416 | t_irc t_ephSBAS::position(int GPSweek, double GPSweeks, double* xc, double* vv) const {
|
---|
1417 |
|
---|
1418 | bncTime tt(GPSweek, GPSweeks);
|
---|
1419 | double dt = tt - _TOC;
|
---|
1420 |
|
---|
1421 | xc[0] = _x_pos + _x_velocity * dt + _x_acceleration * dt * dt / 2.0;
|
---|
1422 | xc[1] = _y_pos + _y_velocity * dt + _y_acceleration * dt * dt / 2.0;
|
---|
1423 | xc[2] = _z_pos + _z_velocity * dt + _z_acceleration * dt * dt / 2.0;
|
---|
1424 |
|
---|
1425 | vv[0] = _x_velocity + _x_acceleration * dt;
|
---|
1426 | vv[1] = _y_velocity + _y_acceleration * dt;
|
---|
1427 | vv[2] = _z_velocity + _z_acceleration * dt;
|
---|
1428 |
|
---|
1429 | xc[3] = _agf0 + _agf1 * dt;
|
---|
1430 |
|
---|
1431 | xc[4] = _agf1;
|
---|
1432 | xc[5] = 0.0;
|
---|
1433 |
|
---|
1434 | return success;
|
---|
1435 | }
|
---|
1436 |
|
---|
1437 | // RINEX Format String
|
---|
1438 | //////////////////////////////////////////////////////////////////////////////
|
---|
1439 | QString t_ephSBAS::toString(double version) const {
|
---|
1440 |
|
---|
1441 | QString rnxStr = rinexDateStr(_TOC, _prn, version);
|
---|
1442 |
|
---|
1443 | QTextStream out(&rnxStr);
|
---|
1444 |
|
---|
1445 | out << QString("%1%2%3\n")
|
---|
1446 | .arg(_agf0, 19, 'e', 12)
|
---|
1447 | .arg(_agf1, 19, 'e', 12)
|
---|
1448 | .arg(_TOT, 19, 'e', 12);
|
---|
1449 |
|
---|
1450 | QString fmt = version < 3.0 ? " %1%2%3%4\n" : " %1%2%3%4\n";
|
---|
1451 |
|
---|
1452 | out << QString(fmt)
|
---|
1453 | .arg(1.e-3*_x_pos, 19, 'e', 12)
|
---|
1454 | .arg(1.e-3*_x_velocity, 19, 'e', 12)
|
---|
1455 | .arg(1.e-3*_x_acceleration, 19, 'e', 12)
|
---|
1456 | .arg(_health, 19, 'e', 12);
|
---|
1457 |
|
---|
1458 | out << QString(fmt)
|
---|
1459 | .arg(1.e-3*_y_pos, 19, 'e', 12)
|
---|
1460 | .arg(1.e-3*_y_velocity, 19, 'e', 12)
|
---|
1461 | .arg(1.e-3*_y_acceleration, 19, 'e', 12)
|
---|
1462 | .arg(_ura, 19, 'e', 12);
|
---|
1463 |
|
---|
1464 | out << QString(fmt)
|
---|
1465 | .arg(1.e-3*_z_pos, 19, 'e', 12)
|
---|
1466 | .arg(1.e-3*_z_velocity, 19, 'e', 12)
|
---|
1467 | .arg(1.e-3*_z_acceleration, 19, 'e', 12)
|
---|
1468 | .arg(double(_IODN), 19, 'e', 12);
|
---|
1469 |
|
---|
1470 | return rnxStr;
|
---|
1471 | }
|
---|
1472 |
|
---|
1473 | // Constructor
|
---|
1474 | //////////////////////////////////////////////////////////////////////////////
|
---|
1475 | t_ephBDS::t_ephBDS(double rnxVersion, const QStringList& lines) {
|
---|
1476 |
|
---|
1477 | const int nLines = 8;
|
---|
1478 |
|
---|
1479 | if (lines.size() != nLines) {
|
---|
1480 | _checkState = bad;
|
---|
1481 | return;
|
---|
1482 | }
|
---|
1483 |
|
---|
1484 | // RINEX Format
|
---|
1485 | // ------------
|
---|
1486 | int fieldLen = 19;
|
---|
1487 |
|
---|
1488 | int pos[4];
|
---|
1489 | pos[0] = (rnxVersion <= 2.12) ? 3 : 4;
|
---|
1490 | pos[1] = pos[0] + fieldLen;
|
---|
1491 | pos[2] = pos[1] + fieldLen;
|
---|
1492 | pos[3] = pos[2] + fieldLen;
|
---|
1493 |
|
---|
1494 | // Read eight lines
|
---|
1495 | // ----------------
|
---|
1496 | for (int iLine = 0; iLine < nLines; iLine++) {
|
---|
1497 | QString line = lines[iLine];
|
---|
1498 |
|
---|
1499 | if ( iLine == 0 ) {
|
---|
1500 | QTextStream in(line.left(pos[1]).toLatin1());
|
---|
1501 |
|
---|
1502 | int year, month, day, hour, min;
|
---|
1503 | double sec;
|
---|
1504 |
|
---|
1505 | QString prnStr, n;
|
---|
1506 | in >> prnStr;
|
---|
1507 | if (prnStr.size() == 1 && prnStr[0] == 'C') {
|
---|
1508 | in >> n;
|
---|
1509 | prnStr.append(n);
|
---|
1510 | }
|
---|
1511 | in >> year >> month >> day >> hour >> min >> sec;
|
---|
1512 | if (prnStr.at(0) == 'C') {
|
---|
1513 | _prn.set('C', prnStr.mid(1).toInt());
|
---|
1514 | }
|
---|
1515 | else {
|
---|
1516 | _prn.set('C', prnStr.toInt());
|
---|
1517 | }
|
---|
1518 |
|
---|
1519 | if (year < 80) {
|
---|
1520 | year += 2000;
|
---|
1521 | }
|
---|
1522 | else if (year < 100) {
|
---|
1523 | year += 1900;
|
---|
1524 | }
|
---|
1525 |
|
---|
1526 | _TOC.setBDS(year, month, day, hour, min, sec);
|
---|
1527 |
|
---|
1528 | if ( readDbl(line, pos[1], fieldLen, _clock_bias ) ||
|
---|
1529 | readDbl(line, pos[2], fieldLen, _clock_drift ) ||
|
---|
1530 | readDbl(line, pos[3], fieldLen, _clock_driftrate) ) {
|
---|
1531 | _checkState = bad;
|
---|
1532 | return;
|
---|
1533 | }
|
---|
1534 | }
|
---|
1535 |
|
---|
1536 | else if ( iLine == 1 ) {
|
---|
1537 | double aode;
|
---|
1538 | if ( readDbl(line, pos[0], fieldLen, aode ) ||
|
---|
1539 | readDbl(line, pos[1], fieldLen, _Crs ) ||
|
---|
1540 | readDbl(line, pos[2], fieldLen, _Delta_n) ||
|
---|
1541 | readDbl(line, pos[3], fieldLen, _M0 ) ) {
|
---|
1542 | _checkState = bad;
|
---|
1543 | return;
|
---|
1544 | }
|
---|
1545 | _AODE = int(aode);
|
---|
1546 | }
|
---|
1547 |
|
---|
1548 | else if ( iLine == 2 ) {
|
---|
1549 | if ( readDbl(line, pos[0], fieldLen, _Cuc ) ||
|
---|
1550 | readDbl(line, pos[1], fieldLen, _e ) ||
|
---|
1551 | readDbl(line, pos[2], fieldLen, _Cus ) ||
|
---|
1552 | readDbl(line, pos[3], fieldLen, _sqrt_A) ) {
|
---|
1553 | _checkState = bad;
|
---|
1554 | return;
|
---|
1555 | }
|
---|
1556 | }
|
---|
1557 |
|
---|
1558 | else if ( iLine == 3 ) {
|
---|
1559 | if ( readDbl(line, pos[0], fieldLen, _TOEsec ) ||
|
---|
1560 | readDbl(line, pos[1], fieldLen, _Cic ) ||
|
---|
1561 | readDbl(line, pos[2], fieldLen, _OMEGA0) ||
|
---|
1562 | readDbl(line, pos[3], fieldLen, _Cis ) ) {
|
---|
1563 | _checkState = bad;
|
---|
1564 | return;
|
---|
1565 | }
|
---|
1566 | }
|
---|
1567 |
|
---|
1568 | else if ( iLine == 4 ) {
|
---|
1569 | if ( readDbl(line, pos[0], fieldLen, _i0 ) ||
|
---|
1570 | readDbl(line, pos[1], fieldLen, _Crc ) ||
|
---|
1571 | readDbl(line, pos[2], fieldLen, _omega ) ||
|
---|
1572 | readDbl(line, pos[3], fieldLen, _OMEGADOT) ) {
|
---|
1573 | _checkState = bad;
|
---|
1574 | return;
|
---|
1575 | }
|
---|
1576 | }
|
---|
1577 |
|
---|
1578 | else if ( iLine == 5 ) {
|
---|
1579 | if ( readDbl(line, pos[0], fieldLen, _IDOT ) ||
|
---|
1580 | readDbl(line, pos[2], fieldLen, _TOEweek)) {
|
---|
1581 | _checkState = bad;
|
---|
1582 | return;
|
---|
1583 | }
|
---|
1584 | }
|
---|
1585 |
|
---|
1586 | else if ( iLine == 6 ) {
|
---|
1587 | double SatH1;
|
---|
1588 | if ( readDbl(line, pos[0], fieldLen, _URA ) ||
|
---|
1589 | readDbl(line, pos[1], fieldLen, SatH1) ||
|
---|
1590 | readDbl(line, pos[2], fieldLen, _TGD1) ||
|
---|
1591 | readDbl(line, pos[3], fieldLen, _TGD2) ) {
|
---|
1592 | _checkState = bad;
|
---|
1593 | return;
|
---|
1594 | }
|
---|
1595 | _SatH1 = int(SatH1);
|
---|
1596 | }
|
---|
1597 |
|
---|
1598 | else if ( iLine == 7 ) {
|
---|
1599 | double aodc;
|
---|
1600 | if ( readDbl(line, pos[0], fieldLen, _TOT) ||
|
---|
1601 | readDbl(line, pos[1], fieldLen, aodc) ) {
|
---|
1602 | _checkState = bad;
|
---|
1603 | return;
|
---|
1604 | }
|
---|
1605 | if (_TOT == 0.9999e9) { // 0.9999e9 means not known (RINEX standard)
|
---|
1606 | _TOT = _TOEsec;
|
---|
1607 | }
|
---|
1608 | _AODC = int(aodc);
|
---|
1609 | }
|
---|
1610 | }
|
---|
1611 |
|
---|
1612 | _TOE.setBDS(int(_TOEweek), _TOEsec);
|
---|
1613 |
|
---|
1614 | // remark: actually should be computed from second_tot
|
---|
1615 | // but it seems to be unreliable in RINEX files
|
---|
1616 | //_TOT = _TOC.bdssec();
|
---|
1617 | }
|
---|
1618 |
|
---|
1619 | // IOD of BDS Ephemeris (virtual)
|
---|
1620 | ////////////////////////////////////////////////////////////////////////////
|
---|
1621 | unsigned int t_ephBDS::IOD() const {
|
---|
1622 | return (int(_TOEsec)/720) % 240;
|
---|
1623 | }
|
---|
1624 |
|
---|
1625 | // Compute BDS Satellite Position (virtual)
|
---|
1626 | //////////////////////////////////////////////////////////////////////////////
|
---|
1627 | t_irc t_ephBDS::position(int GPSweek, double GPSweeks, double* xc, double* vv) const {
|
---|
1628 |
|
---|
1629 | static const double gmBDS = 398.6004418e12;
|
---|
1630 | static const double omegaBDS = 7292115.0000e-11;
|
---|
1631 |
|
---|
1632 | xc[0] = xc[1] = xc[2] = xc[3] = 0.0;
|
---|
1633 | vv[0] = vv[1] = vv[2] = 0.0;
|
---|
1634 |
|
---|
1635 | bncTime tt(GPSweek, GPSweeks);
|
---|
1636 |
|
---|
1637 | if (_sqrt_A == 0) {
|
---|
1638 | return failure;
|
---|
1639 | }
|
---|
1640 | double a0 = _sqrt_A * _sqrt_A;
|
---|
1641 |
|
---|
1642 | double n0 = sqrt(gmBDS/(a0*a0*a0));
|
---|
1643 | double tk = tt - _TOE;
|
---|
1644 | double n = n0 + _Delta_n;
|
---|
1645 | double M = _M0 + n*tk;
|
---|
1646 | double E = M;
|
---|
1647 | double E_last;
|
---|
1648 | int nLoop = 0;
|
---|
1649 | do {
|
---|
1650 | E_last = E;
|
---|
1651 | E = M + _e*sin(E);
|
---|
1652 |
|
---|
1653 | if (++nLoop == 100) {
|
---|
1654 | return failure;
|
---|
1655 | }
|
---|
1656 | } while ( fabs(E-E_last)*a0 > 0.001 );
|
---|
1657 |
|
---|
1658 | double v = atan2(sqrt(1-_e*_e) * sin(E), cos(E) - _e);
|
---|
1659 | double u0 = v + _omega;
|
---|
1660 | double sin2u0 = sin(2*u0);
|
---|
1661 | double cos2u0 = cos(2*u0);
|
---|
1662 | double r = a0*(1 - _e*cos(E)) + _Crc*cos2u0 + _Crs*sin2u0;
|
---|
1663 | double i = _i0 + _IDOT*tk + _Cic*cos2u0 + _Cis*sin2u0;
|
---|
1664 | double u = u0 + _Cuc*cos2u0 + _Cus*sin2u0;
|
---|
1665 | double xp = r*cos(u);
|
---|
1666 | double yp = r*sin(u);
|
---|
1667 | double toesec = (_TOE.gpssec() - 14.0);
|
---|
1668 | double sinom = 0;
|
---|
1669 | double cosom = 0;
|
---|
1670 | double sini = 0;
|
---|
1671 | double cosi = 0;
|
---|
1672 |
|
---|
1673 | // Velocity
|
---|
1674 | // --------
|
---|
1675 | double tanv2 = tan(v/2);
|
---|
1676 | double dEdM = 1 / (1 - _e*cos(E));
|
---|
1677 | double dotv = sqrt((1.0 + _e)/(1.0 - _e)) / cos(E/2)/cos(E/2)
|
---|
1678 | / (1 + tanv2*tanv2) * dEdM * n;
|
---|
1679 | double dotu = dotv + (-_Cuc*sin2u0 + _Cus*cos2u0)*2*dotv;
|
---|
1680 | double doti = _IDOT + (-_Cic*sin2u0 + _Cis*cos2u0)*2*dotv;
|
---|
1681 | double dotr = a0 * _e*sin(E) * dEdM * n
|
---|
1682 | + (-_Crc*sin2u0 + _Crs*cos2u0)*2*dotv;
|
---|
1683 |
|
---|
1684 | double dotx = dotr*cos(u) - r*sin(u)*dotu;
|
---|
1685 | double doty = dotr*sin(u) + r*cos(u)*dotu;
|
---|
1686 |
|
---|
1687 | const double iMaxGEO = 10.0 / 180.0 * M_PI;
|
---|
1688 |
|
---|
1689 | // MEO/IGSO satellite
|
---|
1690 | // ------------------
|
---|
1691 | if (_i0 > iMaxGEO) {
|
---|
1692 | double OM = _OMEGA0 + (_OMEGADOT - omegaBDS)*tk - omegaBDS*toesec;
|
---|
1693 |
|
---|
1694 | sinom = sin(OM);
|
---|
1695 | cosom = cos(OM);
|
---|
1696 | sini = sin(i);
|
---|
1697 | cosi = cos(i);
|
---|
1698 |
|
---|
1699 | xc[0] = xp*cosom - yp*cosi*sinom;
|
---|
1700 | xc[1] = xp*sinom + yp*cosi*cosom;
|
---|
1701 | xc[2] = yp*sini;
|
---|
1702 |
|
---|
1703 | // Velocity
|
---|
1704 | // --------
|
---|
1705 |
|
---|
1706 | double dotom = _OMEGADOT - t_CST::omega;
|
---|
1707 |
|
---|
1708 | vv[0] = cosom *dotx - cosi*sinom *doty // dX / dr
|
---|
1709 | - xp*sinom*dotom - yp*cosi*cosom*dotom // dX / dOMEGA
|
---|
1710 | + yp*sini*sinom*doti; // dX / di
|
---|
1711 |
|
---|
1712 | vv[1] = sinom *dotx + cosi*cosom *doty
|
---|
1713 | + xp*cosom*dotom - yp*cosi*sinom*dotom
|
---|
1714 | - yp*sini*cosom*doti;
|
---|
1715 |
|
---|
1716 | vv[2] = sini *doty + yp*cosi *doti;
|
---|
1717 |
|
---|
1718 | }
|
---|
1719 |
|
---|
1720 | // GEO satellite
|
---|
1721 | // -------------
|
---|
1722 | else {
|
---|
1723 | double OM = _OMEGA0 + _OMEGADOT*tk - omegaBDS*toesec;
|
---|
1724 | double ll = omegaBDS*tk;
|
---|
1725 |
|
---|
1726 | sinom = sin(OM);
|
---|
1727 | cosom = cos(OM);
|
---|
1728 | sini = sin(i);
|
---|
1729 | cosi = cos(i);
|
---|
1730 |
|
---|
1731 | double xx = xp*cosom - yp*cosi*sinom;
|
---|
1732 | double yy = xp*sinom + yp*cosi*cosom;
|
---|
1733 | double zz = yp*sini;
|
---|
1734 |
|
---|
1735 | Matrix RX = BNC_PPP::t_astro::rotX(-5.0 / 180.0 * M_PI);
|
---|
1736 | Matrix RZ = BNC_PPP::t_astro::rotZ(ll);
|
---|
1737 |
|
---|
1738 | ColumnVector X1(3); X1 << xx << yy << zz;
|
---|
1739 | ColumnVector X2 = RZ*RX*X1;
|
---|
1740 |
|
---|
1741 | xc[0] = X2(1);
|
---|
1742 | xc[1] = X2(2);
|
---|
1743 | xc[2] = X2(3);
|
---|
1744 |
|
---|
1745 | double dotom = _OMEGADOT;
|
---|
1746 |
|
---|
1747 | double vx = cosom *dotx - cosi*sinom *doty
|
---|
1748 | - xp*sinom*dotom - yp*cosi*cosom*dotom
|
---|
1749 | + yp*sini*sinom*doti;
|
---|
1750 |
|
---|
1751 | double vy = sinom *dotx + cosi*cosom *doty
|
---|
1752 | + xp*cosom*dotom - yp*cosi*sinom*dotom
|
---|
1753 | - yp*sini*cosom*doti;
|
---|
1754 |
|
---|
1755 | double vz = sini *doty + yp*cosi *doti;
|
---|
1756 |
|
---|
1757 | ColumnVector V(3); V << vx << vy << vz;
|
---|
1758 |
|
---|
1759 | Matrix RdotZ(3,3);
|
---|
1760 | double C = cos(ll);
|
---|
1761 | double S = sin(ll);
|
---|
1762 | Matrix UU(3,3);
|
---|
1763 | UU[0][0] = -S; UU[0][1] = +C; UU[0][2] = 0.0;
|
---|
1764 | UU[1][0] = -C; UU[1][1] = -S; UU[1][2] = 0.0;
|
---|
1765 | UU[2][0] = 0.0; UU[2][1] = 0.0; UU[2][2] = 0.0;
|
---|
1766 | RdotZ = omegaBDS * UU;
|
---|
1767 |
|
---|
1768 | ColumnVector VV(3);
|
---|
1769 | VV = RZ*RX*V + RdotZ*RX*X1;
|
---|
1770 |
|
---|
1771 | vv[0] = VV(1);
|
---|
1772 | vv[1] = VV(2);
|
---|
1773 | vv[2] = VV(3);
|
---|
1774 | }
|
---|
1775 |
|
---|
1776 | double tc = tt - _TOC;
|
---|
1777 | xc[3] = _clock_bias + _clock_drift*tc + _clock_driftrate*tc*tc;
|
---|
1778 |
|
---|
1779 | // dotC = _clock_drift + _clock_driftrate*tc
|
---|
1780 | // - 4.442807309e-10*_e * sqrt(a0) * cos(E) * dEdM * n;
|
---|
1781 |
|
---|
1782 | // Relativistic Correction
|
---|
1783 | // -----------------------
|
---|
1784 | xc[3] -= 4.442807309e-10 * _e * sqrt(a0) *sin(E);
|
---|
1785 |
|
---|
1786 | xc[4] = _clock_drift + _clock_driftrate*tc;
|
---|
1787 | xc[5] = _clock_driftrate;
|
---|
1788 |
|
---|
1789 | return success;
|
---|
1790 | }
|
---|
1791 |
|
---|
1792 | // RINEX Format String
|
---|
1793 | //////////////////////////////////////////////////////////////////////////////
|
---|
1794 | QString t_ephBDS::toString(double version) const {
|
---|
1795 |
|
---|
1796 | QString rnxStr = rinexDateStr(_TOC-14.0, _prn, version);
|
---|
1797 |
|
---|
1798 | QTextStream out(&rnxStr);
|
---|
1799 |
|
---|
1800 | out << QString("%1%2%3\n")
|
---|
1801 | .arg(_clock_bias, 19, 'e', 12)
|
---|
1802 | .arg(_clock_drift, 19, 'e', 12)
|
---|
1803 | .arg(_clock_driftrate, 19, 'e', 12);
|
---|
1804 |
|
---|
1805 | QString fmt = version < 3.0 ? " %1%2%3%4\n" : " %1%2%3%4\n";
|
---|
1806 |
|
---|
1807 | out << QString(fmt)
|
---|
1808 | .arg(double(_AODE), 19, 'e', 12)
|
---|
1809 | .arg(_Crs, 19, 'e', 12)
|
---|
1810 | .arg(_Delta_n, 19, 'e', 12)
|
---|
1811 | .arg(_M0, 19, 'e', 12);
|
---|
1812 |
|
---|
1813 | out << QString(fmt)
|
---|
1814 | .arg(_Cuc, 19, 'e', 12)
|
---|
1815 | .arg(_e, 19, 'e', 12)
|
---|
1816 | .arg(_Cus, 19, 'e', 12)
|
---|
1817 | .arg(_sqrt_A, 19, 'e', 12);
|
---|
1818 |
|
---|
1819 | double toes = 0.0;
|
---|
1820 | if (_TOEweek > -1.0) {// RINEX input
|
---|
1821 | toes = _TOEsec;
|
---|
1822 | }
|
---|
1823 | else {// RTCM stream input
|
---|
1824 | toes = _TOE.bdssec();
|
---|
1825 | }
|
---|
1826 | out << QString(fmt)
|
---|
1827 | .arg(toes, 19, 'e', 12)
|
---|
1828 | .arg(_Cic, 19, 'e', 12)
|
---|
1829 | .arg(_OMEGA0, 19, 'e', 12)
|
---|
1830 | .arg(_Cis, 19, 'e', 12);
|
---|
1831 |
|
---|
1832 | out << QString(fmt)
|
---|
1833 | .arg(_i0, 19, 'e', 12)
|
---|
1834 | .arg(_Crc, 19, 'e', 12)
|
---|
1835 | .arg(_omega, 19, 'e', 12)
|
---|
1836 | .arg(_OMEGADOT, 19, 'e', 12);
|
---|
1837 |
|
---|
1838 | double toew = 0.0;
|
---|
1839 | if (_TOEweek > -1.0) {// RINEX input
|
---|
1840 | toew = _TOEweek;
|
---|
1841 | }
|
---|
1842 | else {// RTCM stream input
|
---|
1843 | toew = double(_TOE.bdsw());
|
---|
1844 | }
|
---|
1845 | out << QString(fmt)
|
---|
1846 | .arg(_IDOT, 19, 'e', 12)
|
---|
1847 | .arg(0.0, 19, 'e', 12)
|
---|
1848 | .arg(toew, 19, 'e', 12)
|
---|
1849 | .arg(0.0, 19, 'e', 12);
|
---|
1850 |
|
---|
1851 | out << QString(fmt)
|
---|
1852 | .arg(_URA, 19, 'e', 12)
|
---|
1853 | .arg(double(_SatH1), 19, 'e', 12)
|
---|
1854 | .arg(_TGD1, 19, 'e', 12)
|
---|
1855 | .arg(_TGD2, 19, 'e', 12);
|
---|
1856 |
|
---|
1857 | double tots = 0.0;
|
---|
1858 | if (_TOEweek > -1.0) {// RINEX input
|
---|
1859 | tots = _TOT;
|
---|
1860 | }
|
---|
1861 | else {// RTCM stream input
|
---|
1862 | tots = _TOE.bdssec();
|
---|
1863 | }
|
---|
1864 | out << QString(fmt)
|
---|
1865 | .arg(tots, 19, 'e', 12)
|
---|
1866 | .arg(double(_AODC), 19, 'e', 12)
|
---|
1867 | .arg("", 19, QChar(' '))
|
---|
1868 | .arg("", 19, QChar(' '));
|
---|
1869 | return rnxStr;
|
---|
1870 | }
|
---|