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: RTCM3Decoder
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30 | *
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31 | * Purpose: RTCM3 Decoder
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32 | *
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33 | * Author: L. Mervart
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34 | *
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35 | * Created: 24-Aug-2006
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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 <iostream>
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42 | #include <iomanip>
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43 | #include <sstream>
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44 | #include <math.h>
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45 | #include <string.h>
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46 |
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47 | #include "bits.h"
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48 | #include "gnss.h"
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49 | #include "RTCM3Decoder.h"
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50 | #include "rtcm_utils.h"
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51 | #include "bncconst.h"
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52 | #include "bnccore.h"
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53 | #include "bncutils.h"
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54 | #include "bncsettings.h"
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55 |
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56 | using namespace std;
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57 |
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58 | // Error Handling
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59 | ////////////////////////////////////////////////////////////////////////////
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60 | void RTCM3Error(const char*, ...) {
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61 | }
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62 |
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63 | // Constructor
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64 | ////////////////////////////////////////////////////////////////////////////
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65 | RTCM3Decoder::RTCM3Decoder(const QString& staID, bncRawFile* rawFile) :
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66 | GPSDecoder() {
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67 |
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68 | _staID = staID;
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69 | _rawFile = rawFile;
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70 |
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71 | connect(this, SIGNAL(newGPSEph(t_ephGPS)), BNC_CORE,
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72 | SLOT(slotNewGPSEph(t_ephGPS)));
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73 | connect(this, SIGNAL(newGlonassEph(t_ephGlo)), BNC_CORE,
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74 | SLOT(slotNewGlonassEph(t_ephGlo)));
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75 | connect(this, SIGNAL(newGalileoEph(t_ephGal)), BNC_CORE,
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76 | SLOT(slotNewGalileoEph(t_ephGal)));
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77 | connect(this, SIGNAL(newSBASEph(t_ephSBAS)), BNC_CORE,
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78 | SLOT(slotNewSBASEph(t_ephSBAS)));
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79 | connect(this, SIGNAL(newBDSEph(t_ephBDS)), BNC_CORE,
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80 | SLOT(slotNewBDSEph(t_ephBDS)));
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81 |
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82 | _MessageSize = _SkipBytes = _BlockSize = _NeedBytes = 0;
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83 | }
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84 |
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85 | // Destructor
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86 | ////////////////////////////////////////////////////////////////////////////
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87 | RTCM3Decoder::~RTCM3Decoder() {
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88 | QMapIterator<QByteArray, RTCM3coDecoder*> it(_coDecoders);
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89 | while (it.hasNext())
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90 | {
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91 | it.next();
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92 | delete it.value();
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93 | }
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94 | }
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95 |
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96 | //
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97 | ////////////////////////////////////////////////////////////////////////////
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98 | bool RTCM3Decoder::DecodeRTCM3GPS(unsigned char* data, int size) {
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99 | bool decoded = false;
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100 | bncTime CurrentObsTime;
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101 | int i, numsats, syncf, type;
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102 | uint64_t numbits = 0, bitfield = 0;
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103 |
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104 | data += 3; /* header */
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105 | size -= 6; /* header + crc */
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106 |
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107 | GETBITS(type, 12)
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108 | SKIPBITS(12)
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109 | /* id */
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110 | GETBITS(i, 30)
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111 |
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112 | CurrentObsTime.set(i);
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113 | if (_CurrentTime.valid() && CurrentObsTime != _CurrentTime) {
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114 | decoded = true;
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115 | _obsList.append(_CurrentObsList);
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116 | _CurrentObsList.clear();
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117 | }
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118 |
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119 | _CurrentTime = CurrentObsTime;
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120 |
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121 | GETBITS(syncf, 1)
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122 | /* sync */
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123 | GETBITS(numsats, 5)
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124 | SKIPBITS(4)
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125 | /* smind, smint */
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126 |
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127 | while (numsats--) {
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128 | int sv, code, l1range, amb = 0;
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129 | t_satObs CurrentObs;
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130 | CurrentObs._time = CurrentObsTime;
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131 |
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132 | GETBITS(sv, 6)
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133 | if (sv < 40)
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134 | CurrentObs._prn.set('G', sv);
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135 | else
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136 | CurrentObs._prn.set('S', sv - 20);
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137 |
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138 | t_frqObs *frqObs = new t_frqObs;
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139 | /* L1 */
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140 | GETBITS(code, 1);
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141 | (code) ?
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142 | frqObs->_rnxType2ch.assign("1W") : frqObs->_rnxType2ch.assign("1C");
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143 | GETBITS(l1range, 24);
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144 | GETBITSSIGN(i, 20);
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145 | if ((i & ((1 << 20) - 1)) != 0x80000) {
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146 | frqObs->_code = l1range * 0.02;
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147 | frqObs->_phase = (l1range * 0.02 + i * 0.0005) / GPS_WAVELENGTH_L1;
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148 | frqObs->_codeValid = frqObs->_phaseValid = true;
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149 | }
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150 | GETBITS(frqObs->_lockTimeIndicator, 7);
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151 | frqObs->_lockTime = lti2sec(type, frqObs->_lockTimeIndicator);
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152 | frqObs->_lockTimeValid = (frqObs->_lockTime >= 0.0 && frqObs->_phaseValid);
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153 | if (type == 1002 || type == 1004) {
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154 | GETBITS(amb, 8);
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155 | if (amb) {
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156 | frqObs->_code += amb * 299792.458;
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157 | frqObs->_phase += (amb * 299792.458) / GPS_WAVELENGTH_L1;
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158 | }
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159 | GETBITS(i, 8);
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160 | if (i) {
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161 | frqObs->_snr = i * 0.25;
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162 | frqObs->_snrValid = true;
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163 | }
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164 | }
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165 | CurrentObs._obs.push_back(frqObs);
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166 | if (type == 1003 || type == 1004) {
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167 | frqObs = new t_frqObs;
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168 | /* L2 */
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169 | GETBITS(code, 2);
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170 | switch (code) {
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171 | case 3:
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172 | frqObs->_rnxType2ch.assign("2W"); /* or "2Y"? */
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173 | break;
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174 | case 2:
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175 | frqObs->_rnxType2ch.assign("2W");
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176 | break;
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177 | case 1:
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178 | frqObs->_rnxType2ch.assign("2P");
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179 | break;
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180 | case 0:
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181 | frqObs->_rnxType2ch.assign("2X"); /* or "2S" or "2L"? */
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182 | break;
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183 | }
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184 | GETBITSSIGN(i, 14);
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185 | if ((i & ((1 << 14) - 1)) != 0x2000) {
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186 | frqObs->_code = l1range * 0.02 + i * 0.02 + amb * 299792.458;
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187 | frqObs->_codeValid = true;
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188 | }
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189 | GETBITSSIGN(i, 20);
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190 | if ((i & ((1 << 20) - 1)) != 0x80000) {
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191 | frqObs->_phase = (l1range * 0.02 + i * 0.0005 + amb * 299792.458)
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192 | / GPS_WAVELENGTH_L2;
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193 | frqObs->_phaseValid = true;
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194 | }
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195 | GETBITS(frqObs->_lockTimeIndicator, 7);
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196 | frqObs->_lockTime = lti2sec(type, frqObs->_lockTimeIndicator);
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197 | frqObs->_lockTimeValid = (frqObs->_lockTime >= 0.0 && frqObs->_phaseValid);
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198 | if (type == 1004) {
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199 | GETBITS(i, 8);
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200 | if (i) {
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201 | frqObs->_snr = i * 0.25;
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202 | frqObs->_snrValid = true;
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203 | }
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204 | }
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205 | CurrentObs._obs.push_back(frqObs);
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206 | }
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207 | _CurrentObsList.push_back(CurrentObs);
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208 | }
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209 |
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210 | if (!syncf) {
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211 | decoded = true;
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212 | _obsList.append(_CurrentObsList);
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213 | _CurrentTime.reset();
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214 | _CurrentObsList.clear();
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215 | }
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216 | return decoded;
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217 | }
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218 |
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219 | #define RTCM3_MSM_NUMSIG 32
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220 | #define RTCM3_MSM_NUMSAT 64
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221 | #define RTCM3_MSM_NUMCELLS 96 /* arbitrary limit */
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222 |
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223 | /**
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224 | * Frequency numbers of GLONASS with an offset of 100 to detect unset values.
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225 | * Gets filled by ephemeris and data blocks and shared between different streams.
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226 | */
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227 | static int GLOFreq[RTCM3_MSM_NUMSAT];
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228 |
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229 | /*
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230 | * Storage structure to store frequency and RINEX ID assignment for MSM
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231 | * message */
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232 | struct CodeData {
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233 | double wl;
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234 | const char *code; /* currently unused */
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235 | };
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236 |
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237 | /** MSM signal types for GPS and SBAS */
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238 | static struct CodeData gps[RTCM3_MSM_NUMSIG] = {
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239 | {0.0, 0},
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240 | {GPS_WAVELENGTH_L1, "1C"},
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241 | {GPS_WAVELENGTH_L1, "1P"},
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242 | {GPS_WAVELENGTH_L1, "1W"},
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243 | {0.0, 0},
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244 | {0.0, 0},
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245 | {0.0, 0},
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246 | {GPS_WAVELENGTH_L2, "2C"},
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247 | {GPS_WAVELENGTH_L2, "2P"},
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248 | {GPS_WAVELENGTH_L2, "2W"},
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249 | {0.0, 0},
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250 | {0.0, 0},
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251 | {0.0, 0},
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252 | {0.0, 0},
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253 | {GPS_WAVELENGTH_L2, "2S"},
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254 | {GPS_WAVELENGTH_L2, "2L"},
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255 | {GPS_WAVELENGTH_L2, "2X"},
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256 | {0.0, 0},
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257 | {0.0, 0},
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258 | {0.0, 0},
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259 | {0.0, 0},
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260 | {GPS_WAVELENGTH_L5, "5I"},
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261 | {GPS_WAVELENGTH_L5, "5Q"},
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262 | {GPS_WAVELENGTH_L5, "5X"},
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263 | {0.0, 0},
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264 | {0.0, 0},
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265 | {0.0, 0},
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266 | {0.0, 0},
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267 | {0.0, 0},
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268 | {GPS_WAVELENGTH_L1, "1S"},
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269 | {GPS_WAVELENGTH_L1, "1L"},
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270 | {GPS_WAVELENGTH_L1, "1X"}
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271 | };
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272 |
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273 | /**
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274 | * MSM signal types for GLONASS
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275 | *
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276 | * NOTE: Uses 0.0, 1.0 for wavelength as sat index dependence is done later!
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277 | */
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278 | static struct CodeData glo[RTCM3_MSM_NUMSIG] = {
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279 | {0.0, 0},
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280 | {0.0, "1C"},
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281 | {0.0, "1P"},
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282 | {0.0, 0},
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283 | {0.0, 0},
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284 | {0.0, 0},
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285 | {0.0, 0},
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286 | {1.0, "2C"},
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287 | {1.0, "2P"},
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288 | {GLO_WAVELENGTH_L1a, "4A"},
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289 | {GLO_WAVELENGTH_L1a, "4B"},
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290 | {GLO_WAVELENGTH_L1a, "4X"},
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291 | {GLO_WAVELENGTH_L2a, "6A"},
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292 | {GLO_WAVELENGTH_L2a, "6B"},
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293 | {GLO_WAVELENGTH_L2a, "6X"},
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294 | {GLO_WAVELENGTH_L3, "3I"},
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295 | {GLO_WAVELENGTH_L3, "3Q"},
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296 | {GLO_WAVELENGTH_L3, "3X"},
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297 | {0.0, 0},
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298 | {0.0, 0},
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299 | {0.0, 0},
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300 | {0.0, 0},
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301 | {0.0, 0},
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302 | {0.0, 0},
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303 | {0.0, 0},
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304 | {0.0, 0},
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305 | {0.0, 0},
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306 | {0.0, 0},
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307 | {0.0, 0},
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308 | {0.0, 0},
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309 | {0.0, 0},
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310 | {0.0, 0}
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311 | };
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312 |
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313 | /** MSM signal types for Galileo */
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314 | static struct CodeData gal[RTCM3_MSM_NUMSIG] = {
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315 | {0.0, 0},
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316 | {GAL_WAVELENGTH_E1, "1C"},
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317 | {GAL_WAVELENGTH_E1, "1A"},
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318 | {GAL_WAVELENGTH_E1, "1B"},
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319 | {GAL_WAVELENGTH_E1, "1X"},
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320 | {GAL_WAVELENGTH_E1, "1Z"},
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321 | {0.0, 0},
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322 | {GAL_WAVELENGTH_E6, "6C"},
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323 | {GAL_WAVELENGTH_E6, "6A"},
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324 | {GAL_WAVELENGTH_E6, "6B"},
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325 | {GAL_WAVELENGTH_E6, "6X"},
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326 | {GAL_WAVELENGTH_E6, "6Z"},
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327 | {0.0, 0},
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328 | {GAL_WAVELENGTH_E5B, "7I"},
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329 | {GAL_WAVELENGTH_E5B, "7Q"},
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330 | {GAL_WAVELENGTH_E5B, "7X"},
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331 | {0.0, 0},
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332 | {GAL_WAVELENGTH_E5AB,"8I"},
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333 | {GAL_WAVELENGTH_E5AB,"8Q"},
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334 | {GAL_WAVELENGTH_E5AB,"8X"},
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335 | {0.0, 0},
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336 | {GAL_WAVELENGTH_E5A, "5I"},
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337 | {GAL_WAVELENGTH_E5A, "5Q"},
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338 | {GAL_WAVELENGTH_E5A, "5X"},
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339 | {0.0, 0},
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340 | {0.0, 0},
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341 | {0.0, 0},
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342 | {0.0, 0},
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343 | {0.0, 0},
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344 | {0.0, 0},
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345 | {0.0, 0},
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346 | {0.0, 0}
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347 | };
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348 |
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349 | /** MSM signal types for QZSS */
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350 | static struct CodeData qzss[RTCM3_MSM_NUMSIG] = {
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351 | {0.0, 0},
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352 | {GPS_WAVELENGTH_L1, "1C"},
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353 | {0.0, 0},
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354 | {0.0, 0},
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355 | {0.0, 0},
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356 | {0.0, 0},
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357 | {0.0, 0},
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358 | {0.0, 0},
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359 | {QZSS_WAVELENGTH_L6, "6S"},
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360 | {QZSS_WAVELENGTH_L6, "6L"},
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361 | {QZSS_WAVELENGTH_L6, "6X"},
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362 | {0.0, 0},
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363 | {0.0, 0},
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364 | {0.0, 0},
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365 | {GPS_WAVELENGTH_L2, "2S"},
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366 | {GPS_WAVELENGTH_L2, "2L"},
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367 | {GPS_WAVELENGTH_L2, "2X"},
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368 | {0.0, 0},
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369 | {0.0, 0},
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370 | {0.0, 0},
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371 | {0.0, 0},
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372 | {GPS_WAVELENGTH_L5, "5I"},
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373 | {GPS_WAVELENGTH_L5, "5Q"},
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374 | {GPS_WAVELENGTH_L5, "5X"},
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375 | {0.0, 0},
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376 | {0.0, 0},
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377 | {0.0, 0},
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378 | {0.0, 0},
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379 | {0.0, 0},
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380 | {GPS_WAVELENGTH_L1, "1S"},
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381 | {GPS_WAVELENGTH_L1, "1L"},
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382 | {GPS_WAVELENGTH_L1, "1X"}
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383 | };
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384 |
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385 | /** MSM signal types for Beidou/BDS */
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386 | static struct CodeData bds[RTCM3_MSM_NUMSIG] = {
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387 | {0.0, 0},
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388 | {BDS_WAVELENGTH_B1, "2I"},
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389 | {BDS_WAVELENGTH_B1, "2Q"},
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390 | {BDS_WAVELENGTH_B1, "2X"},
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391 | {0.0, 0},
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392 | {0.0, 0},
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393 | {0.0, 0},
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394 | {BDS_WAVELENGTH_B3, "6I"},
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395 | {BDS_WAVELENGTH_B3, "6Q"},
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396 | {BDS_WAVELENGTH_B3, "6X"},
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397 | {0.0, 0},
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398 | {0.0, 0},
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399 | {0.0, 0},
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400 | {BDS_WAVELENGTH_B2, "7I"},
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401 | {BDS_WAVELENGTH_B2, "7Q"},
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402 | {BDS_WAVELENGTH_B2, "7X"},
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403 | {0.0, 0},
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404 | {0.0, 0},
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405 | {0.0, 0},
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406 | {0.0, 0},
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407 | {0.0, 0},
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408 | {BDS_WAVELENGTH_B2a, "5D"},
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409 | {BDS_WAVELENGTH_B2a, "5P"},
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410 | {BDS_WAVELENGTH_B2a, "5X"},
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411 | {BDS_WAVELENGTH_B2b, "7D"},
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412 | {0.0, 0},
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413 | {0.0, 0},
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414 | {0.0, 0},
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415 | {0.0, 0},
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416 | {BDS_WAVELENGTH_B1C, "1D"},
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417 | {BDS_WAVELENGTH_B1C, "1P"},
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418 | {BDS_WAVELENGTH_B1C, "1X"}
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419 | };
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420 |
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421 | /** MSM signal types for IRNSS */
|
---|
422 | static struct CodeData irn[RTCM3_MSM_NUMSIG] = {
|
---|
423 | {0.0, 0},
|
---|
424 | {0.0, 0},
|
---|
425 | {0.0, 0},
|
---|
426 | {0.0, 0},
|
---|
427 | {0.0, 0},
|
---|
428 | {0.0, 0},
|
---|
429 | {0.0, 0},
|
---|
430 | {IRNSS_WAVELENGTH_S, "9A"},
|
---|
431 | {0.0, 0},
|
---|
432 | {0.0, 0},
|
---|
433 | {0.0, 0},
|
---|
434 | {0.0, 0},
|
---|
435 | {0.0, 0},
|
---|
436 | {0.0, 0},
|
---|
437 | {0.0, 0},
|
---|
438 | {0.0, 0},
|
---|
439 | {0.0, 0},
|
---|
440 | {0.0, 0},
|
---|
441 | {0.0, 0},
|
---|
442 | {0.0, 0},
|
---|
443 | {0.0, 0},
|
---|
444 | {IRNSS_WAVELENGTH_L5, "5A"},
|
---|
445 | {0.0, 0},
|
---|
446 | {0.0, 0},
|
---|
447 | {0.0, 0},
|
---|
448 | {0.0, 0},
|
---|
449 | {0.0, 0},
|
---|
450 | {0.0, 0},
|
---|
451 | {0.0, 0},
|
---|
452 | {0.0, 0},
|
---|
453 | {0.0, 0},
|
---|
454 | {0.0, 0}
|
---|
455 | };
|
---|
456 |
|
---|
457 | #define UINT64(c) c ## ULL
|
---|
458 |
|
---|
459 | //
|
---|
460 | ////////////////////////////////////////////////////////////////////////////
|
---|
461 | bool RTCM3Decoder::DecodeRTCM3MSM(unsigned char* data, int size) {
|
---|
462 | bool decoded = false;
|
---|
463 | int type, syncf, i;
|
---|
464 | uint64_t numbits = 0, bitfield = 0;
|
---|
465 |
|
---|
466 | data += 3; /* header */
|
---|
467 | size -= 6; /* header + crc */
|
---|
468 |
|
---|
469 | GETBITS(type, 12)
|
---|
470 | SKIPBITS(12)
|
---|
471 | /* id */
|
---|
472 | char sys;
|
---|
473 | if (type >= 1131)
|
---|
474 | sys = 'I';
|
---|
475 | else if (type >= 1121)
|
---|
476 | sys = 'C';
|
---|
477 | else if (type >= 1111)
|
---|
478 | sys = 'J';
|
---|
479 | else if (type >= 1101)
|
---|
480 | sys = 'S';
|
---|
481 | else if (type >= 1091)
|
---|
482 | sys = 'E';
|
---|
483 | else if (type >= 1081)
|
---|
484 | sys = 'R';
|
---|
485 | else if (type >= 1071)
|
---|
486 | sys = 'G';
|
---|
487 |
|
---|
488 | bncTime CurrentObsTime;
|
---|
489 | if (sys == 'C') /* BDS */ {
|
---|
490 | GETBITS(i, 30)
|
---|
491 | CurrentObsTime.setBDS(i);
|
---|
492 | }
|
---|
493 | else if (sys == 'R') /* GLONASS */ {
|
---|
494 | SKIPBITS(3)
|
---|
495 | GETBITS(i, 27)
|
---|
496 | /* tk */
|
---|
497 | CurrentObsTime.setTk(i);
|
---|
498 | }
|
---|
499 | else /* GPS style date */ {
|
---|
500 | GETBITS(i, 30)
|
---|
501 | CurrentObsTime.set(i);
|
---|
502 | }
|
---|
503 | if (_CurrentTime.valid() && CurrentObsTime != _CurrentTime) {
|
---|
504 | decoded = true;
|
---|
505 | _obsList.append(_CurrentObsList);
|
---|
506 | _CurrentObsList.clear();
|
---|
507 | }
|
---|
508 | _CurrentTime = CurrentObsTime;
|
---|
509 |
|
---|
510 | GETBITS(syncf, 1)
|
---|
511 | /**
|
---|
512 | * Ignore unknown types except for sync flag
|
---|
513 | *
|
---|
514 | * We actually support types 1-3 in following code, but as they are missing
|
---|
515 | * the full cycles and can't be used later we skip interpretation here already.
|
---|
516 | */
|
---|
517 | if (type <= 1137 && (type % 10) >= 4 && (type % 10) <= 7) {
|
---|
518 | int sigmask, numsat = 0, numsig = 0;
|
---|
519 | uint64_t satmask, cellmask, ui;
|
---|
520 | // satellite data
|
---|
521 | double rrmod[RTCM3_MSM_NUMSAT]; // GNSS sat rough ranges modulo 1 millisecond
|
---|
522 | int rrint[RTCM3_MSM_NUMSAT]; // number of integer msecs in GNSS sat rough ranges
|
---|
523 | int rdop[RTCM3_MSM_NUMSAT]; // GNSS sat rough phase range rates
|
---|
524 | int extsat[RTCM3_MSM_NUMSAT];// extended sat info
|
---|
525 | // signal data
|
---|
526 | int ll[RTCM3_MSM_NUMCELLS]; // lock time indicator
|
---|
527 | /*int hc[RTCM3_MSM_NUMCELLS];*/ // half cycle ambiguity indicator
|
---|
528 | double cnr[RTCM3_MSM_NUMCELLS]; // signal cnr
|
---|
529 | double cp[RTCM3_MSM_NUMCELLS]; // fine phase range data
|
---|
530 | double psr[RTCM3_MSM_NUMCELLS]; // fine psr
|
---|
531 | double dop[RTCM3_MSM_NUMCELLS]; // fine phase range rates
|
---|
532 |
|
---|
533 | SKIPBITS(3 + 7 + 2 + 2 + 1 + 3)
|
---|
534 | GETBITS64(satmask, RTCM3_MSM_NUMSAT)
|
---|
535 |
|
---|
536 | /* http://gurmeetsingh.wordpress.com/2008/08/05/fast-bit-counting-routines/ */
|
---|
537 | for (ui = satmask; ui; ui &= (ui - 1) /* remove rightmost bit */)
|
---|
538 | ++numsat;
|
---|
539 | GETBITS(sigmask, RTCM3_MSM_NUMSIG)
|
---|
540 | for (i = sigmask; i; i &= (i - 1) /* remove rightmost bit */)
|
---|
541 | ++numsig;
|
---|
542 | for (i = 0; i < RTCM3_MSM_NUMSAT; ++i)
|
---|
543 | extsat[i] = 15;
|
---|
544 |
|
---|
545 | i = numsat * numsig;
|
---|
546 | GETBITS64(cellmask, (unsigned )i)
|
---|
547 | // satellite data
|
---|
548 | switch (type % 10) {
|
---|
549 | case 1:
|
---|
550 | case 2:
|
---|
551 | case 3:
|
---|
552 | /* partial data, already skipped above, but implemented for future expansion ! */
|
---|
553 | for (int j = numsat; j--;)
|
---|
554 | GETFLOAT(rrmod[j], 10, 1.0 / 1024.0)
|
---|
555 | break;
|
---|
556 | case 4:
|
---|
557 | case 6:
|
---|
558 | for (int j = numsat; j--;)
|
---|
559 | GETBITS(rrint[j], 8)
|
---|
560 | for (int j = numsat; j--;)
|
---|
561 | GETFLOAT(rrmod[j], 10, 1.0 / 1024.0)
|
---|
562 | break;
|
---|
563 | case 5:
|
---|
564 | case 7:
|
---|
565 | for (int j = numsat; j--;)
|
---|
566 | GETBITS(rrint[j], 8)
|
---|
567 | for (int j = numsat; j--;)
|
---|
568 | GETBITS(extsat[j], 4)
|
---|
569 | for (int j = numsat; j--;)
|
---|
570 | GETFLOAT(rrmod[j], 10, 1.0 / 1024.0)
|
---|
571 | for (int j = numsat; j--;)
|
---|
572 | GETBITSSIGN(rdop[j], 14)
|
---|
573 | break;
|
---|
574 | }
|
---|
575 | // signal data
|
---|
576 | int numcells = numsat * numsig;
|
---|
577 | /** Drop anything which exceeds our cell limit. Increase limit definition
|
---|
578 | * when that happens. */
|
---|
579 | if (numcells <= RTCM3_MSM_NUMCELLS) {
|
---|
580 | switch (type % 10) {
|
---|
581 | case 1:
|
---|
582 | for (int count = numcells; count--;)
|
---|
583 | if (cellmask & (UINT64(1) << count))
|
---|
584 | GETFLOATSIGN(psr[count], 15, 1.0 / (1 << 24))
|
---|
585 | break;
|
---|
586 | case 2:
|
---|
587 | for (int count = numcells; count--;)
|
---|
588 | if (cellmask & (UINT64(1) << count))
|
---|
589 | GETFLOATSIGN(cp[count], 22, 1.0 / (1 << 29))
|
---|
590 | for (int count = numcells; count--;)
|
---|
591 | if (cellmask & (UINT64(1) << count))
|
---|
592 | GETBITS(ll[count], 4)
|
---|
593 | for (int count = numcells; count--;)
|
---|
594 | if (cellmask & (UINT64(1) << count))
|
---|
595 | SKIPBITS(1)/*GETBITS(hc[count], 1)*/
|
---|
596 | break;
|
---|
597 | case 3:
|
---|
598 | for (int count = numcells; count--;)
|
---|
599 | if (cellmask & (UINT64(1) << count))
|
---|
600 | GETFLOATSIGN(psr[count], 15, 1.0 / (1 << 24))
|
---|
601 | for (int count = numcells; count--;)
|
---|
602 | if (cellmask & (UINT64(1) << count))
|
---|
603 | GETFLOATSIGN(cp[count], 22, 1.0 / (1 << 29))
|
---|
604 | for (int count = numcells; count--;)
|
---|
605 | if (cellmask & (UINT64(1) << count))
|
---|
606 | GETBITS(ll[count], 4)
|
---|
607 | for (int count = numcells; count--;)
|
---|
608 | if (cellmask & (UINT64(1) << count))
|
---|
609 | SKIPBITS(1)/*GETBITS(hc[count], 1)*/
|
---|
610 | break;
|
---|
611 | case 4:
|
---|
612 | for (int count = numcells; count--;)
|
---|
613 | if (cellmask & (UINT64(1) << count))
|
---|
614 | GETFLOATSIGN(psr[count], 15, 1.0 / (1 << 24))
|
---|
615 | for (int count = numcells; count--;)
|
---|
616 | if (cellmask & (UINT64(1) << count))
|
---|
617 | GETFLOATSIGN(cp[count], 22, 1.0 / (1 << 29))
|
---|
618 | for (int count = numcells; count--;)
|
---|
619 | if (cellmask & (UINT64(1) << count))
|
---|
620 | GETBITS(ll[count], 4)
|
---|
621 | for (int count = numcells; count--;)
|
---|
622 | if (cellmask & (UINT64(1) << count))
|
---|
623 | SKIPBITS(1)/*GETBITS(hc[count], 1)*/
|
---|
624 | for (int count = numcells; count--;)
|
---|
625 | if (cellmask & (UINT64(1) << count))
|
---|
626 | GETBITS(cnr[count], 6)
|
---|
627 | break;
|
---|
628 | case 5:
|
---|
629 | for (int count = numcells; count--;)
|
---|
630 | if (cellmask & (UINT64(1) << count))
|
---|
631 | GETFLOATSIGN(psr[count], 15, 1.0 / (1 << 24))
|
---|
632 | for (int count = numcells; count--;)
|
---|
633 | if (cellmask & (UINT64(1) << count))
|
---|
634 | GETFLOATSIGN(cp[count], 22, 1.0 / (1 << 29))
|
---|
635 | for (int count = numcells; count--;)
|
---|
636 | if (cellmask & (UINT64(1) << count))
|
---|
637 | GETBITS(ll[count], 4)
|
---|
638 | for (int count = numcells; count--;)
|
---|
639 | if (cellmask & (UINT64(1) << count))
|
---|
640 | SKIPBITS(1)/*GETBITS(hc[count], 1)*/
|
---|
641 | for (int count = numcells; count--;)
|
---|
642 | if (cellmask & (UINT64(1) << count))
|
---|
643 | GETFLOAT(cnr[count], 6, 1.0)
|
---|
644 | for (int count = numcells; count--;)
|
---|
645 | if (cellmask & (UINT64(1) << count))
|
---|
646 | GETFLOATSIGN(dop[count], 15, 0.0001)
|
---|
647 | break;
|
---|
648 | case 6:
|
---|
649 | for (int count = numcells; count--;)
|
---|
650 | if (cellmask & (UINT64(1) << count))
|
---|
651 | GETFLOATSIGN(psr[count], 20, 1.0 / (1 << 29))
|
---|
652 | for (int count = numcells; count--;)
|
---|
653 | if (cellmask & (UINT64(1) << count))
|
---|
654 | GETFLOATSIGN(cp[count], 24, 1.0 / (1U << 31))
|
---|
655 | for (int count = numcells; count--;)
|
---|
656 | if (cellmask & (UINT64(1) << count))
|
---|
657 | GETBITS(ll[count], 10)
|
---|
658 | for (int count = numcells; count--;)
|
---|
659 | if (cellmask & (UINT64(1) << count))
|
---|
660 | SKIPBITS(1)/*GETBITS(hc[count], 1)*/
|
---|
661 | for (int count = numcells; count--;)
|
---|
662 | if (cellmask & (UINT64(1) << count))
|
---|
663 | GETFLOAT(cnr[count], 10, 1.0 / (1 << 4))
|
---|
664 | break;
|
---|
665 | case 7:
|
---|
666 | for (int count = numcells; count--;)
|
---|
667 | if (cellmask & (UINT64(1) << count))
|
---|
668 | GETFLOATSIGN(psr[count], 20, 1.0 / (1 << 29))
|
---|
669 | for (int count = numcells; count--;)
|
---|
670 | if (cellmask & (UINT64(1) << count))
|
---|
671 | GETFLOATSIGN(cp[count], 24, 1.0 / (1U << 31))
|
---|
672 | for (int count = numcells; count--;)
|
---|
673 | if (cellmask & (UINT64(1) << count))
|
---|
674 | GETBITS(ll[count], 10)
|
---|
675 | for (int count = numcells; count--;)
|
---|
676 | if (cellmask & (UINT64(1) << count))
|
---|
677 | SKIPBITS(1)/*GETBITS(hc[count], 1)*/
|
---|
678 | for (int count = numcells; count--;)
|
---|
679 | if (cellmask & (UINT64(1) << count))
|
---|
680 | GETFLOAT(cnr[count], 10, 1.0 / (1 << 4))
|
---|
681 | for (int count = numcells; count--;)
|
---|
682 | if (cellmask & (UINT64(1) << count))
|
---|
683 | GETFLOATSIGN(dop[count], 15, 0.0001)
|
---|
684 | break;
|
---|
685 | }
|
---|
686 | i = RTCM3_MSM_NUMSAT;
|
---|
687 | int j = -1;
|
---|
688 | t_satObs CurrentObs;
|
---|
689 | for (int count = numcells; count--;) {
|
---|
690 | while (j >= 0 && !(sigmask & (1 << --j)))
|
---|
691 | ;
|
---|
692 | if (j < 0) {
|
---|
693 | while (!(satmask & (UINT64(1) << (--i))))
|
---|
694 | /* next satellite */
|
---|
695 | ;
|
---|
696 | if (CurrentObs._obs.size() > 0)
|
---|
697 | _CurrentObsList.push_back(CurrentObs);
|
---|
698 | CurrentObs.clear();
|
---|
699 | CurrentObs._time = CurrentObsTime;
|
---|
700 | if (sys == 'S')
|
---|
701 | CurrentObs._prn.set(sys, 20 - 1 + RTCM3_MSM_NUMSAT - i);
|
---|
702 | else
|
---|
703 | CurrentObs._prn.set(sys, RTCM3_MSM_NUMSAT - i);
|
---|
704 | j = RTCM3_MSM_NUMSIG;
|
---|
705 | while (!(sigmask & (1 << --j)))
|
---|
706 | ;
|
---|
707 | --numsat;
|
---|
708 | }
|
---|
709 | if (cellmask & (UINT64(1) << count)) {
|
---|
710 | struct CodeData cd = {0.0, 0};
|
---|
711 | switch (sys) {
|
---|
712 | case 'J':
|
---|
713 | cd = qzss[RTCM3_MSM_NUMSIG - j - 1];
|
---|
714 | break;
|
---|
715 | case 'C':
|
---|
716 | cd = bds[RTCM3_MSM_NUMSIG - j - 1];
|
---|
717 | break;
|
---|
718 | case 'G':
|
---|
719 | case 'S':
|
---|
720 | cd = gps[RTCM3_MSM_NUMSIG - j - 1];
|
---|
721 | break;
|
---|
722 | case 'R':
|
---|
723 | cd = glo[RTCM3_MSM_NUMSIG - j - 1];
|
---|
724 | {
|
---|
725 | int k = GLOFreq[RTCM3_MSM_NUMSAT - i - 1];
|
---|
726 | if (extsat[numsat] < 14) { // channel number is available as extended info for MSM5/7
|
---|
727 | k = GLOFreq[RTCM3_MSM_NUMSAT - i - 1] = 100 + extsat[numsat] - 7;
|
---|
728 | }
|
---|
729 | if (k) {
|
---|
730 | if (cd.wl == 0.0) {
|
---|
731 | cd.wl = GLO_WAVELENGTH_L1(k - 100);
|
---|
732 | }
|
---|
733 | else if (cd.wl == 1.0) {
|
---|
734 | cd.wl = GLO_WAVELENGTH_L2(k - 100);
|
---|
735 | }
|
---|
736 | }
|
---|
737 | else if (!k && cd.wl <= 1) {
|
---|
738 | cd.code = 0;
|
---|
739 | }
|
---|
740 | }
|
---|
741 | break;
|
---|
742 | case 'E':
|
---|
743 | cd = gal[RTCM3_MSM_NUMSIG - j - 1];
|
---|
744 | break;
|
---|
745 | case 'I':
|
---|
746 | cd = irn[RTCM3_MSM_NUMSIG - j - 1];
|
---|
747 | break;
|
---|
748 | }
|
---|
749 | if (cd.code) {
|
---|
750 | t_frqObs *frqObs = new t_frqObs;
|
---|
751 | frqObs->_rnxType2ch.assign(cd.code);
|
---|
752 |
|
---|
753 | switch (type % 10) {
|
---|
754 | case 1:
|
---|
755 | if (psr[count] > -1.0 / (1 << 10)) {
|
---|
756 | frqObs->_code = psr[count] * LIGHTSPEED / 1000.0
|
---|
757 | + (rrmod[numsat]) * LIGHTSPEED / 1000.0;
|
---|
758 | frqObs->_codeValid = true;
|
---|
759 | }
|
---|
760 | break;
|
---|
761 | case 2:
|
---|
762 | if (cp[count] > -1.0 / (1 << 8)) {
|
---|
763 | frqObs->_phase = cp[count] * LIGHTSPEED / 1000.0 / cd.wl
|
---|
764 | + (rrmod[numsat]) * LIGHTSPEED / 1000.0 / cd.wl;
|
---|
765 | frqObs->_phaseValid = true;
|
---|
766 | frqObs->_lockTime = lti2sec(type,ll[count]);
|
---|
767 | frqObs->_lockTimeValid = (frqObs->_lockTime >= 0.0);
|
---|
768 | frqObs->_lockTimeIndicator = ll[count];
|
---|
769 | }
|
---|
770 | break;
|
---|
771 | case 3:
|
---|
772 | if (psr[count] > -1.0 / (1 << 10)) {
|
---|
773 | frqObs->_code = psr[count] * LIGHTSPEED / 1000.0
|
---|
774 | + (rrmod[numsat]) * LIGHTSPEED / 1000.0;
|
---|
775 | frqObs->_codeValid = true;
|
---|
776 | }
|
---|
777 | if (cp[count] > -1.0 / (1 << 8)) {
|
---|
778 | frqObs->_phase = cp[count] * LIGHTSPEED / 1000.0 / cd.wl
|
---|
779 | + rrmod[numsat] * LIGHTSPEED / 1000.0 / cd.wl;
|
---|
780 | frqObs->_phaseValid = true;
|
---|
781 | frqObs->_lockTime = lti2sec(type,ll[count]);
|
---|
782 | frqObs->_lockTimeValid = (frqObs->_lockTime >= 0.0);
|
---|
783 | frqObs->_lockTimeIndicator = ll[count];
|
---|
784 | }
|
---|
785 | break;
|
---|
786 | case 4:
|
---|
787 | if (psr[count] > -1.0 / (1 << 10)) {
|
---|
788 | frqObs->_code = psr[count] * LIGHTSPEED / 1000.0
|
---|
789 | + (rrmod[numsat] + rrint[numsat]) * LIGHTSPEED / 1000.0;
|
---|
790 | frqObs->_codeValid = true;
|
---|
791 | }
|
---|
792 | if (cp[count] > -1.0 / (1 << 8)) {
|
---|
793 | frqObs->_phase = cp[count] * LIGHTSPEED / 1000.0 / cd.wl
|
---|
794 | + (rrmod[numsat] + rrint[numsat]) * LIGHTSPEED / 1000.0 / cd.wl;
|
---|
795 | frqObs->_phaseValid = true;
|
---|
796 | frqObs->_lockTime = lti2sec(type,ll[count]);
|
---|
797 | frqObs->_lockTimeValid = (frqObs->_lockTime >= 0.0);
|
---|
798 | frqObs->_lockTimeIndicator = ll[count];
|
---|
799 | }
|
---|
800 | frqObs->_snr = cnr[count];
|
---|
801 | frqObs->_snrValid = true;
|
---|
802 | break;
|
---|
803 | case 5:
|
---|
804 | if (psr[count] > -1.0 / (1 << 10)) {
|
---|
805 | frqObs->_code = psr[count] * LIGHTSPEED / 1000.0
|
---|
806 | + (rrmod[numsat] + rrint[numsat]) * LIGHTSPEED / 1000.0;
|
---|
807 | frqObs->_codeValid = true;
|
---|
808 | }
|
---|
809 | if (cp[count] > -1.0 / (1 << 8)) {
|
---|
810 | frqObs->_phase = cp[count] * LIGHTSPEED / 1000.0 / cd.wl
|
---|
811 | + (rrmod[numsat] + rrint[numsat]) * LIGHTSPEED / 1000.0 / cd.wl;
|
---|
812 | frqObs->_phaseValid = true;
|
---|
813 | frqObs->_lockTime = lti2sec(type,ll[count]);
|
---|
814 | frqObs->_lockTimeValid = (frqObs->_lockTime >= 0.0);
|
---|
815 | frqObs->_lockTimeIndicator = ll[count];
|
---|
816 | }
|
---|
817 | frqObs->_snr = cnr[count];
|
---|
818 | frqObs->_snrValid = true;
|
---|
819 | if (dop[count] > -1.6384) {
|
---|
820 | frqObs->_doppler = -(dop[count] + rdop[numsat]) / cd.wl;
|
---|
821 | frqObs->_dopplerValid = true;
|
---|
822 | }
|
---|
823 | break;
|
---|
824 | case 6:
|
---|
825 | if (psr[count] > -1.0 / (1 << 10)) {
|
---|
826 | frqObs->_code = psr[count] * LIGHTSPEED / 1000.0
|
---|
827 | + (rrmod[numsat] + rrint[numsat]) * LIGHTSPEED / 1000.0;
|
---|
828 | frqObs->_codeValid = true;
|
---|
829 | }
|
---|
830 | if (cp[count] > -1.0 / (1 << 8)) {
|
---|
831 | frqObs->_phase = cp[count] * LIGHTSPEED / 1000.0 / cd.wl
|
---|
832 | + (rrmod[numsat] + rrint[numsat]) * LIGHTSPEED / 1000.0 / cd.wl;
|
---|
833 | frqObs->_phaseValid = true;
|
---|
834 | frqObs->_lockTime = lti2sec(type,ll[count]);
|
---|
835 | frqObs->_lockTimeValid = (frqObs->_lockTime >= 0.0);
|
---|
836 | frqObs->_lockTimeIndicator = ll[count];
|
---|
837 | }
|
---|
838 |
|
---|
839 | frqObs->_snr = cnr[count];
|
---|
840 | frqObs->_snrValid = true;
|
---|
841 | break;
|
---|
842 | case 7:
|
---|
843 | if (psr[count] > -1.0 / (1 << 10)) {
|
---|
844 | frqObs->_code = psr[count] * LIGHTSPEED / 1000.0
|
---|
845 | + (rrmod[numsat] + rrint[numsat]) * LIGHTSPEED / 1000.0;
|
---|
846 | frqObs->_codeValid = true;
|
---|
847 | }
|
---|
848 | if (cp[count] > -1.0 / (1 << 8)) {
|
---|
849 | frqObs->_phase = cp[count] * LIGHTSPEED / 1000.0 / cd.wl
|
---|
850 | + (rrmod[numsat] + rrint[numsat]) * LIGHTSPEED / 1000.0 / cd.wl;
|
---|
851 | frqObs->_phaseValid = true;
|
---|
852 | frqObs->_lockTime = lti2sec(type,ll[count]);
|
---|
853 | frqObs->_lockTimeValid = (frqObs->_lockTime >= 0.0);
|
---|
854 | frqObs->_lockTimeIndicator = ll[count];
|
---|
855 | }
|
---|
856 |
|
---|
857 | frqObs->_snr = cnr[count];
|
---|
858 | frqObs->_snrValid = true;
|
---|
859 |
|
---|
860 | if (dop[count] > -1.6384) {
|
---|
861 | frqObs->_doppler = -(dop[count] + rdop[numsat]) / cd.wl;
|
---|
862 | frqObs->_dopplerValid = true;
|
---|
863 | }
|
---|
864 | break;
|
---|
865 | }
|
---|
866 | CurrentObs._obs.push_back(frqObs);
|
---|
867 | }
|
---|
868 | }
|
---|
869 | }
|
---|
870 | if (CurrentObs._obs.size() > 0) {
|
---|
871 | _CurrentObsList.push_back(CurrentObs);
|
---|
872 | }
|
---|
873 | }
|
---|
874 | }
|
---|
875 | else if ((type % 10) < 4) {
|
---|
876 | emit(newMessage(QString("%1: Block %2 contain partial data! Ignored!")
|
---|
877 | .arg(_staID).arg(type).toAscii(), true));
|
---|
878 | }
|
---|
879 | if (!syncf) {
|
---|
880 | decoded = true;
|
---|
881 | _obsList.append(_CurrentObsList);
|
---|
882 | _CurrentTime.reset();
|
---|
883 | _CurrentObsList.clear();
|
---|
884 | }
|
---|
885 | return decoded;
|
---|
886 | }
|
---|
887 |
|
---|
888 | //
|
---|
889 | ////////////////////////////////////////////////////////////////////////////
|
---|
890 | bool RTCM3Decoder::DecodeRTCM3GLONASS(unsigned char* data, int size) {
|
---|
891 | bool decoded = false;
|
---|
892 | bncTime CurrentObsTime;
|
---|
893 | int i, numsats, syncf, type;
|
---|
894 | uint64_t numbits = 0, bitfield = 0;
|
---|
895 |
|
---|
896 | data += 3; /* header */
|
---|
897 | size -= 6; /* header + crc */
|
---|
898 |
|
---|
899 | GETBITS(type, 12)
|
---|
900 | SKIPBITS(12)
|
---|
901 | /* id */
|
---|
902 | GETBITS(i, 27)
|
---|
903 | /* tk */
|
---|
904 |
|
---|
905 | CurrentObsTime.setTk(i);
|
---|
906 | if (_CurrentTime.valid() && CurrentObsTime != _CurrentTime) {
|
---|
907 | decoded = true;
|
---|
908 | _obsList.append(_CurrentObsList);
|
---|
909 | _CurrentObsList.clear();
|
---|
910 | }
|
---|
911 | _CurrentTime = CurrentObsTime;
|
---|
912 |
|
---|
913 | GETBITS(syncf, 1)
|
---|
914 | /* sync */
|
---|
915 | GETBITS(numsats, 5)
|
---|
916 | SKIPBITS(4)
|
---|
917 | /* smind, smint */
|
---|
918 |
|
---|
919 | while (numsats--) {
|
---|
920 | int sv, code, l1range, amb = 0, freq;
|
---|
921 | t_satObs CurrentObs;
|
---|
922 | CurrentObs._time = CurrentObsTime;
|
---|
923 |
|
---|
924 | GETBITS(sv, 6)
|
---|
925 | CurrentObs._prn.set('R', sv);
|
---|
926 | GETBITS(code, 1)
|
---|
927 | GETBITS(freq, 5)
|
---|
928 | GLOFreq[sv - 1] = 100 + freq - 7; /* store frequency for other users (MSM) */
|
---|
929 |
|
---|
930 | t_frqObs *frqObs = new t_frqObs;
|
---|
931 | /* L1 */
|
---|
932 | (code) ?
|
---|
933 | frqObs->_rnxType2ch.assign("1P") : frqObs->_rnxType2ch.assign("1C");
|
---|
934 | GETBITS(l1range, 25);
|
---|
935 | GETBITSSIGN(i, 20);
|
---|
936 | if ((i & ((1 << 20) - 1)) != 0x80000) {
|
---|
937 | frqObs->_code = l1range * 0.02;
|
---|
938 | frqObs->_phase = (l1range * 0.02 + i * 0.0005)
|
---|
939 | / GLO_WAVELENGTH_L1(freq - 7);
|
---|
940 | frqObs->_codeValid = frqObs->_phaseValid = true;
|
---|
941 | }
|
---|
942 | GETBITS(frqObs->_lockTimeIndicator, 7);
|
---|
943 | frqObs->_lockTime = lti2sec(type, frqObs->_lockTimeIndicator);
|
---|
944 | frqObs->_lockTimeValid = (frqObs->_lockTime >= 0.0 && frqObs->_phaseValid);
|
---|
945 | if (type == 1010 || type == 1012) {
|
---|
946 | GETBITS(amb, 7);
|
---|
947 | if (amb) {
|
---|
948 | frqObs->_code += amb * 599584.916;
|
---|
949 | frqObs->_phase += (amb * 599584.916) / GLO_WAVELENGTH_L1(freq - 7);
|
---|
950 | }
|
---|
951 | GETBITS(i, 8);
|
---|
952 | if (i) {
|
---|
953 | frqObs->_snr = i * 0.25;
|
---|
954 | frqObs->_snrValid = true;
|
---|
955 | }
|
---|
956 | }
|
---|
957 | CurrentObs._obs.push_back(frqObs);
|
---|
958 | if (type == 1011 || type == 1012) {
|
---|
959 | frqObs = new t_frqObs;
|
---|
960 | /* L2 */
|
---|
961 | GETBITS(code, 2);
|
---|
962 | switch (code) {
|
---|
963 | case 3:
|
---|
964 | frqObs->_rnxType2ch.assign("2P");
|
---|
965 | break;
|
---|
966 | case 2:
|
---|
967 | frqObs->_rnxType2ch.assign("2P");
|
---|
968 | break;
|
---|
969 | case 1:
|
---|
970 | frqObs->_rnxType2ch.assign("2P");
|
---|
971 | break;
|
---|
972 | case 0:
|
---|
973 | frqObs->_rnxType2ch.assign("2C");
|
---|
974 | break;
|
---|
975 | }
|
---|
976 | GETBITSSIGN(i, 14);
|
---|
977 | if ((i & ((1 << 14) - 1)) != 0x2000) {
|
---|
978 | frqObs->_code = l1range * 0.02 + i * 0.02 + amb * 599584.916;
|
---|
979 | frqObs->_codeValid = true;
|
---|
980 | }
|
---|
981 | GETBITSSIGN(i, 20);
|
---|
982 | if ((i & ((1 << 20) - 1)) != 0x80000) {
|
---|
983 | frqObs->_phase = (l1range * 0.02 + i * 0.0005 + amb * 599584.916)
|
---|
984 | / GLO_WAVELENGTH_L2(freq - 7);
|
---|
985 | frqObs->_phaseValid = true;
|
---|
986 | }
|
---|
987 | GETBITS(frqObs->_lockTimeIndicator, 7);
|
---|
988 | frqObs->_lockTime = lti2sec(type, frqObs->_lockTimeIndicator);
|
---|
989 | frqObs->_lockTimeValid = (frqObs->_lockTime >= 0.0 && frqObs->_phaseValid);
|
---|
990 | if (type == 1012) {
|
---|
991 | GETBITS(i, 8);
|
---|
992 | if (i) {
|
---|
993 | frqObs->_snr = i * 0.25;
|
---|
994 | frqObs->_snrValid = true;
|
---|
995 | }
|
---|
996 | }
|
---|
997 | CurrentObs._obs.push_back(frqObs);
|
---|
998 | }
|
---|
999 | _CurrentObsList.push_back(CurrentObs);
|
---|
1000 | }
|
---|
1001 | if (!syncf) {
|
---|
1002 | decoded = true;
|
---|
1003 | _obsList.append(_CurrentObsList);
|
---|
1004 | _CurrentTime.reset();
|
---|
1005 | _CurrentObsList.clear();
|
---|
1006 | }
|
---|
1007 | return decoded;
|
---|
1008 | }
|
---|
1009 |
|
---|
1010 | //
|
---|
1011 | ////////////////////////////////////////////////////////////////////////////
|
---|
1012 | bool RTCM3Decoder::DecodeGPSEphemeris(unsigned char* data, int size) {
|
---|
1013 | bool decoded = false;
|
---|
1014 |
|
---|
1015 | if (size == 67) {
|
---|
1016 | t_ephGPS eph;
|
---|
1017 | int i, week;
|
---|
1018 | uint64_t numbits = 0, bitfield = 0;
|
---|
1019 | int fitIntervalFalg = 0;
|
---|
1020 |
|
---|
1021 | data += 3; /* header */
|
---|
1022 | size -= 6; /* header + crc */
|
---|
1023 | SKIPBITS(12)
|
---|
1024 |
|
---|
1025 | eph._receptDateTime = currentDateAndTimeGPS();
|
---|
1026 |
|
---|
1027 | GETBITS(i, 6)
|
---|
1028 | eph._prn.set('G', i);
|
---|
1029 | GETBITS(week, 10)
|
---|
1030 | GETBITS(i, 4)
|
---|
1031 | eph._ura = accuracyFromIndex(i, eph.type());
|
---|
1032 | GETBITS(eph._L2Codes, 2)
|
---|
1033 | GETFLOATSIGN(eph._IDOT, 14, R2R_PI/(double)(1<<30)/(double)(1<<13))
|
---|
1034 | GETBITS(eph._IODE, 8)
|
---|
1035 | GETBITS(i, 16)
|
---|
1036 | i <<= 4;
|
---|
1037 | eph._TOC.set(i * 1000);
|
---|
1038 | GETFLOATSIGN(eph._clock_driftrate, 8, 1.0 / (double )(1 << 30) / (double )(1 << 25))
|
---|
1039 | GETFLOATSIGN(eph._clock_drift, 16, 1.0 / (double )(1 << 30) / (double )(1 << 13))
|
---|
1040 | GETFLOATSIGN(eph._clock_bias, 22, 1.0 / (double )(1 << 30) / (double )(1 << 1))
|
---|
1041 | GETBITS(eph._IODC, 10)
|
---|
1042 | GETFLOATSIGN(eph._Crs, 16, 1.0 / (double )(1 << 5))
|
---|
1043 | GETFLOATSIGN(eph._Delta_n, 16, R2R_PI/(double)(1<<30)/(double)(1<<13))
|
---|
1044 | GETFLOATSIGN(eph._M0, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1045 | GETFLOATSIGN(eph._Cuc, 16, 1.0 / (double )(1 << 29))
|
---|
1046 | GETFLOAT(eph._e, 32, 1.0 / (double )(1 << 30) / (double )(1 << 3))
|
---|
1047 | GETFLOATSIGN(eph._Cus, 16, 1.0 / (double )(1 << 29))
|
---|
1048 | GETFLOAT(eph._sqrt_A, 32, 1.0 / (double )(1 << 19))
|
---|
1049 | if (eph._sqrt_A < 1000.0) {return false;}
|
---|
1050 | GETBITS(i, 16)
|
---|
1051 | i <<= 4;
|
---|
1052 | eph._TOEsec = i;
|
---|
1053 | bncTime t;
|
---|
1054 | t.set(i * 1000);
|
---|
1055 | eph._TOEweek = t.gpsw();
|
---|
1056 | int numOfRollOvers = int(floor(t.gpsw()/1024.0));
|
---|
1057 | week += (numOfRollOvers * 1024);
|
---|
1058 | /* week from HOW, differs from TOC, TOE week, we use adapted value instead */
|
---|
1059 | if (eph._TOEweek > week + 1 || eph._TOEweek < week - 1) /* invalid week */
|
---|
1060 | return false;
|
---|
1061 | GETFLOATSIGN(eph._Cic, 16, 1.0 / (double )(1 << 29))
|
---|
1062 | GETFLOATSIGN(eph._OMEGA0, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1063 | GETFLOATSIGN(eph._Cis, 16, 1.0 / (double )(1 << 29))
|
---|
1064 | GETFLOATSIGN(eph._i0, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1065 | GETFLOATSIGN(eph._Crc, 16, 1.0 / (double )(1 << 5))
|
---|
1066 | GETFLOATSIGN(eph._omega, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1067 | GETFLOATSIGN(eph._OMEGADOT, 24, R2R_PI/(double)(1<<30)/(double)(1<<13))
|
---|
1068 | GETFLOATSIGN(eph._TGD, 8, 1.0 / (double )(1 << 30) / (double )(1 << 1))
|
---|
1069 | GETBITS(eph._health, 6)
|
---|
1070 | GETBITS(eph._L2PFlag, 1)
|
---|
1071 | GETBITS(fitIntervalFalg, 1)
|
---|
1072 | eph._fitInterval = fitIntervalFromFlag(fitIntervalFalg, eph._IODC, eph.type());
|
---|
1073 | eph._TOT = 0.9999e9;
|
---|
1074 |
|
---|
1075 | emit newGPSEph(eph);
|
---|
1076 | decoded = true;
|
---|
1077 | }
|
---|
1078 | return decoded;
|
---|
1079 | }
|
---|
1080 |
|
---|
1081 | //
|
---|
1082 | ////////////////////////////////////////////////////////////////////////////
|
---|
1083 | bool RTCM3Decoder::DecodeGLONASSEphemeris(unsigned char* data, int size) {
|
---|
1084 | bool decoded = false;
|
---|
1085 |
|
---|
1086 | if (size == 51) {
|
---|
1087 | t_ephGlo eph;
|
---|
1088 | int sv, i, tk;
|
---|
1089 | uint64_t numbits = 0, bitfield = 0;
|
---|
1090 |
|
---|
1091 | data += 3; /* header */
|
---|
1092 | size -= 6; /* header + crc */
|
---|
1093 | SKIPBITS(12)
|
---|
1094 |
|
---|
1095 | eph._receptDateTime = currentDateAndTimeGPS();
|
---|
1096 |
|
---|
1097 | GETBITS(sv, 6)
|
---|
1098 | eph._prn.set('R', sv);
|
---|
1099 |
|
---|
1100 | GETBITS(i, 5)
|
---|
1101 | eph._frequency_number = i - 7;
|
---|
1102 | GETBITS(eph._almanac_health, 1) /* almanac healthy */
|
---|
1103 | GETBITS(eph._almanac_health_availablility_indicator, 1) /* almanac health ok */
|
---|
1104 | if (eph._almanac_health_availablility_indicator == 0.0) {return false;}
|
---|
1105 | GETBITS(eph._P1, 2) /* P1 */
|
---|
1106 | GETBITS(i, 5)
|
---|
1107 | tk = i * 60 * 60;
|
---|
1108 | GETBITS(i, 6)
|
---|
1109 | tk += i * 60;
|
---|
1110 | GETBITS(i, 1)
|
---|
1111 | tk += i * 30;
|
---|
1112 | eph._tki = tk - 3*60*60;
|
---|
1113 | if(eph._tki < 0.0) {
|
---|
1114 | eph._tki += 86400.0;
|
---|
1115 | }
|
---|
1116 | GETBITS(eph._health, 1) /* MSB of Bn*/
|
---|
1117 | GETBITS(eph._P2, 1) /* P2 */
|
---|
1118 | GETBITS(i, 7)
|
---|
1119 | eph._TOC.setTk(i * 15 * 60 * 1000); /* tb */
|
---|
1120 |
|
---|
1121 | GETFLOATSIGNM(eph._x_velocity, 24, 1.0 / (double )(1 << 20))
|
---|
1122 | GETFLOATSIGNM(eph._x_pos, 27, 1.0 / (double )(1 << 11))
|
---|
1123 | GETFLOATSIGNM(eph._x_acceleration, 5, 1.0 / (double )(1 << 30))
|
---|
1124 | GETFLOATSIGNM(eph._y_velocity, 24, 1.0 / (double )(1 << 20))
|
---|
1125 | GETFLOATSIGNM(eph._y_pos, 27, 1.0 / (double )(1 << 11))
|
---|
1126 | GETFLOATSIGNM(eph._y_acceleration, 5, 1.0 / (double )(1 << 30))
|
---|
1127 | GETFLOATSIGNM(eph._z_velocity, 24, 1.0 / (double )(1 << 20))
|
---|
1128 | GETFLOATSIGNM(eph._z_pos, 27, 1.0 / (double )(1 << 11))
|
---|
1129 | GETFLOATSIGNM(eph._z_acceleration, 5, 1.0 / (double )(1 << 30))
|
---|
1130 | GETBITS(eph._P3, 1) /* P3 */
|
---|
1131 | GETFLOATSIGNM(eph._gamma, 11, 1.0 / (double )(1 << 30) / (double )(1 << 10))
|
---|
1132 | GETBITS(eph._M_P, 2) /* GLONASS-M P, */
|
---|
1133 | GETBITS(eph._M_l3, 1) /*GLONASS-M ln (third string) */
|
---|
1134 | GETFLOATSIGNM(eph._tau, 22, 1.0 / (double )(1 << 30)) /* GLONASS tau n(tb) */
|
---|
1135 | GETFLOATSIGNM(eph._M_delta_tau, 5, 1.0 / (double )(1 << 30)) /* GLONASS-M delta tau n(tb) */
|
---|
1136 | GETBITS(eph._E, 5)
|
---|
1137 | GETBITS(eph._M_P4, 1) /* GLONASS-M P4 */
|
---|
1138 | GETBITS(eph._M_FT, 4) /* GLONASS-M Ft */
|
---|
1139 | GETBITS(eph._M_NT, 11) /* GLONASS-M Nt */
|
---|
1140 | if (eph._M_NT == 0.0) {return false;}
|
---|
1141 | GETBITS(eph._M_M, 2) /* GLONASS-M M */
|
---|
1142 | GETBITS(eph._additional_data_availability, 1) /* GLONASS-M The Availability of Additional Data */
|
---|
1143 | if (eph._additional_data_availability == 0.0) {return false;}
|
---|
1144 | GETBITS(eph._NA, 11) /* GLONASS-M Na */
|
---|
1145 | GETFLOATSIGNM(eph._tauC, 32, 1.0/(double)(1<<30)/(double)(1<<1)) /* GLONASS tau c */
|
---|
1146 | GETBITS(eph._M_N4, 5) /* GLONASS-M N4 */
|
---|
1147 | GETFLOATSIGNM(eph._M_tau_GPS, 22, 1.0/(double)(1<<30)) /* GLONASS-M tau GPS */
|
---|
1148 | GETBITS(eph._M_l5, 1) /* GLONASS-M ln (fifth string) */
|
---|
1149 |
|
---|
1150 | unsigned year, month, day;
|
---|
1151 | eph._TOC.civil_date(year, month, day);
|
---|
1152 | eph._gps_utc = gnumleap(year, month, day);
|
---|
1153 | eph._tt = eph._TOC;
|
---|
1154 |
|
---|
1155 | eph._xv(1) = eph._x_pos * 1.e3;
|
---|
1156 | eph._xv(2) = eph._y_pos * 1.e3;
|
---|
1157 | eph._xv(3) = eph._z_pos * 1.e3;
|
---|
1158 | eph._xv(4) = eph._x_velocity * 1.e3;
|
---|
1159 | eph._xv(5) = eph._y_velocity * 1.e3;
|
---|
1160 | eph._xv(6) = eph._z_velocity * 1.e3;
|
---|
1161 |
|
---|
1162 | GLOFreq[sv - 1] = 100 + eph._frequency_number ; /* store frequency for other users (MSM) */
|
---|
1163 | _gloFrq = QString("%1 %2").arg(eph._prn.toString().c_str()).arg(eph._frequency_number, 2, 'f', 0);
|
---|
1164 |
|
---|
1165 | emit newGlonassEph(eph);
|
---|
1166 | decoded = true;
|
---|
1167 | }
|
---|
1168 | return decoded;
|
---|
1169 | }
|
---|
1170 |
|
---|
1171 | //
|
---|
1172 | ////////////////////////////////////////////////////////////////////////////
|
---|
1173 | bool RTCM3Decoder::DecodeQZSSEphemeris(unsigned char* data, int size) {
|
---|
1174 | bool decoded = false;
|
---|
1175 |
|
---|
1176 | if (size == 67) {
|
---|
1177 | t_ephGPS eph;
|
---|
1178 | int i, week;
|
---|
1179 | uint64_t numbits = 0, bitfield = 0;
|
---|
1180 | int fitIntervalFalg = 0;
|
---|
1181 |
|
---|
1182 | data += 3; /* header */
|
---|
1183 | size -= 6; /* header + crc */
|
---|
1184 | SKIPBITS(12)
|
---|
1185 |
|
---|
1186 | eph._receptDateTime = currentDateAndTimeGPS();
|
---|
1187 |
|
---|
1188 | GETBITS(i, 4)
|
---|
1189 | eph._prn.set('J', i);
|
---|
1190 |
|
---|
1191 | GETBITS(i, 16)
|
---|
1192 | i <<= 4;
|
---|
1193 | eph._TOC.set(i * 1000);
|
---|
1194 |
|
---|
1195 | GETFLOATSIGN(eph._clock_driftrate, 8, 1.0 / (double )(1 << 30) / (double )(1 << 25))
|
---|
1196 | GETFLOATSIGN(eph._clock_drift, 16, 1.0 / (double )(1 << 30) / (double )(1 << 13))
|
---|
1197 | GETFLOATSIGN(eph._clock_bias, 22, 1.0 / (double )(1 << 30) / (double )(1 << 1))
|
---|
1198 | GETBITS(eph._IODE, 8)
|
---|
1199 | GETFLOATSIGN(eph._Crs, 16, 1.0 / (double )(1 << 5))
|
---|
1200 | GETFLOATSIGN(eph._Delta_n, 16, R2R_PI/(double)(1<<30)/(double)(1<<13))
|
---|
1201 | GETFLOATSIGN(eph._M0, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1202 | GETFLOATSIGN(eph._Cuc, 16, 1.0 / (double )(1 << 29))
|
---|
1203 | GETFLOAT(eph._e, 32, 1.0 / (double )(1 << 30) / (double )(1 << 3))
|
---|
1204 | GETFLOATSIGN(eph._Cus, 16, 1.0 / (double )(1 << 29))
|
---|
1205 | GETFLOAT(eph._sqrt_A, 32, 1.0 / (double )(1 << 19))
|
---|
1206 | if (eph._sqrt_A < 1000.0) {return false;}
|
---|
1207 | GETBITS(i, 16)
|
---|
1208 | i <<= 4;
|
---|
1209 | eph._TOEsec = i;
|
---|
1210 | bncTime t;
|
---|
1211 | t.set(i*1000);
|
---|
1212 | eph._TOEweek = t.gpsw();
|
---|
1213 | GETFLOATSIGN(eph._Cic, 16, 1.0 / (double )(1 << 29))
|
---|
1214 | GETFLOATSIGN(eph._OMEGA0, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1215 | GETFLOATSIGN(eph._Cis, 16, 1.0 / (double )(1 << 29))
|
---|
1216 | GETFLOATSIGN(eph._i0, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1217 | GETFLOATSIGN(eph._Crc, 16, 1.0 / (double )(1 << 5))
|
---|
1218 | GETFLOATSIGN(eph._omega, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1219 | GETFLOATSIGN(eph._OMEGADOT, 24, R2R_PI/(double)(1<<30)/(double)(1<<13))
|
---|
1220 | GETFLOATSIGN(eph._IDOT, 14, R2R_PI/(double)(1<<30)/(double)(1<<13))
|
---|
1221 | GETBITS(eph._L2Codes, 2)
|
---|
1222 | GETBITS(week, 10)
|
---|
1223 | int numOfRollOvers = int(floor(t.gpsw()/1024.0));
|
---|
1224 | week += (numOfRollOvers * 1024);
|
---|
1225 | /* week from HOW, differs from TOC, TOE week, we use adapted value instead */
|
---|
1226 | if (eph._TOEweek > week + 1 || eph._TOEweek < week - 1) /* invalid week */
|
---|
1227 | return false;
|
---|
1228 |
|
---|
1229 | GETBITS(i, 4)
|
---|
1230 | if (i <= 6)
|
---|
1231 | eph._ura = ceil(10.0 * pow(2.0, 1.0 + i / 2.0)) / 10.0;
|
---|
1232 | else
|
---|
1233 | eph._ura = ceil(10.0 * pow(2.0, i / 2.0)) / 10.0;
|
---|
1234 | GETBITS(eph._health, 6)
|
---|
1235 | GETFLOATSIGN(eph._TGD, 8, 1.0 / (double )(1 << 30) / (double )(1 << 1))
|
---|
1236 | GETBITS(eph._IODC, 10)
|
---|
1237 | GETBITS(fitIntervalFalg, 1)
|
---|
1238 | eph._fitInterval = fitIntervalFromFlag(fitIntervalFalg, eph._IODC, eph.type());
|
---|
1239 | eph._TOT = 0.9999e9;
|
---|
1240 |
|
---|
1241 | emit newGPSEph(eph);
|
---|
1242 | decoded = true;
|
---|
1243 | }
|
---|
1244 | return decoded;
|
---|
1245 | }
|
---|
1246 |
|
---|
1247 | //
|
---|
1248 | ////////////////////////////////////////////////////////////////////////////
|
---|
1249 | bool RTCM3Decoder::DecodeIRNSSEphemeris(unsigned char* data, int size) {
|
---|
1250 | bool decoded = false;
|
---|
1251 |
|
---|
1252 | if (size == 67) {
|
---|
1253 | t_ephGPS eph;
|
---|
1254 | int i, week, L5Flag, SFlag;
|
---|
1255 | uint64_t numbits = 0, bitfield = 0;
|
---|
1256 |
|
---|
1257 | data += 3; /* header */
|
---|
1258 | size -= 6; /* header + crc */
|
---|
1259 | SKIPBITS(12)
|
---|
1260 |
|
---|
1261 | eph._receptDateTime = currentDateAndTimeGPS();
|
---|
1262 |
|
---|
1263 | GETBITS(i, 6)
|
---|
1264 | eph._prn.set('I', i);
|
---|
1265 | GETBITS(week, 10)
|
---|
1266 | GETFLOATSIGN(eph._clock_bias, 22, 1.0 / (double )(1 << 30) / (double )(1 << 1))
|
---|
1267 | GETFLOATSIGN(eph._clock_drift, 16, 1.0 / (double )(1 << 30) / (double )(1 << 13))
|
---|
1268 | GETFLOATSIGN(eph._clock_driftrate, 8, 1.0 / (double )(1 << 30) / (double )(1 << 25))
|
---|
1269 | GETBITS(i, 4)
|
---|
1270 | eph._ura = accuracyFromIndex(i, eph.type());
|
---|
1271 | GETBITS(i, 16)
|
---|
1272 | i <<= 4;
|
---|
1273 | eph._TOC.set(i * 1000);
|
---|
1274 | GETFLOATSIGN(eph._TGD, 8, 1.0 / (double )(1 << 30) / (double )(1 << 1))
|
---|
1275 | GETFLOATSIGN(eph._Delta_n, 22, R2R_PI/(double)(1<<30)/(double)(1 << 11))
|
---|
1276 | // IODCE
|
---|
1277 | GETBITS(eph._IODE, 8)
|
---|
1278 | eph._IODC = eph._IODE;
|
---|
1279 | SKIPBITS(10)
|
---|
1280 | GETBITS(L5Flag, 1)
|
---|
1281 | GETBITS(SFlag, 1)
|
---|
1282 | if (L5Flag == 0 && SFlag == 0) {
|
---|
1283 | eph._health = 0.0;
|
---|
1284 | }
|
---|
1285 | else if (L5Flag == 0 && SFlag == 1) {
|
---|
1286 | eph._health = 1.0;
|
---|
1287 | }
|
---|
1288 | else if (L5Flag == 1 && SFlag == 0) {
|
---|
1289 | eph._health = 2.0;
|
---|
1290 | }
|
---|
1291 | else if (L5Flag == 1 && SFlag == 1) {
|
---|
1292 | eph._health = 3.0;
|
---|
1293 | }
|
---|
1294 | GETFLOATSIGN(eph._Cuc, 15, 1.0 / (double )(1 << 28))
|
---|
1295 | GETFLOATSIGN(eph._Cus, 15, 1.0 / (double )(1 << 28))
|
---|
1296 | GETFLOATSIGN(eph._Cic, 15, 1.0 / (double )(1 << 28))
|
---|
1297 | GETFLOATSIGN(eph._Cis, 15, 1.0 / (double )(1 << 28))
|
---|
1298 | GETFLOATSIGN(eph._Crc, 15, 1.0 / (double )(1 << 4))
|
---|
1299 | GETFLOATSIGN(eph._Crs, 15, 1.0 / (double )(1 << 4))
|
---|
1300 | GETFLOATSIGN(eph._IDOT, 14, R2R_PI/(double)(1<<30)/(double)(1<<13))
|
---|
1301 | GETFLOATSIGN(eph._M0, 32, R2R_PI/(double)(1<<30)/(double)(1<< 1))
|
---|
1302 | GETBITS(i, 16)
|
---|
1303 | i <<= 4;
|
---|
1304 | eph._TOEsec = i;
|
---|
1305 | bncTime t;
|
---|
1306 | t.set(i * 1000);
|
---|
1307 | eph._TOEweek = t.gpsw();
|
---|
1308 | int numOfRollOvers = int(floor(t.gpsw()/1024.0));
|
---|
1309 | week += (numOfRollOvers * 1024);
|
---|
1310 | /* week from HOW, differs from TOC, TOE week, we use adapted value instead */
|
---|
1311 | if (eph._TOEweek > week + 1 || eph._TOEweek < week - 1) /* invalid week */
|
---|
1312 | return false;
|
---|
1313 | GETFLOAT(eph._e, 32, 1.0 / (double )(1 << 30) / (double )(1 << 3))
|
---|
1314 | GETFLOAT(eph._sqrt_A, 32, 1.0 / (double )(1 << 19))
|
---|
1315 | if (eph._sqrt_A < 1000.0) {return false;}
|
---|
1316 | GETFLOATSIGN(eph._OMEGA0, 32, R2R_PI/(double)(1<<30)/(double)(1<< 1))
|
---|
1317 | GETFLOATSIGN(eph._omega, 32, R2R_PI/(double)(1<<30)/(double)(1<< 1))
|
---|
1318 | GETFLOATSIGN(eph._OMEGADOT, 22, R2R_PI/(double)(1<<30)/(double)(1<<11))
|
---|
1319 | GETFLOATSIGN(eph._i0, 32, R2R_PI/(double)(1<<30)/(double)(1<< 1))
|
---|
1320 | SKIPBITS(2)
|
---|
1321 | SKIPBITS(2)
|
---|
1322 | eph._TOT = 0.9999e9;
|
---|
1323 |
|
---|
1324 | emit newGPSEph(eph);
|
---|
1325 | decoded = true;
|
---|
1326 | }
|
---|
1327 | return decoded;
|
---|
1328 | }
|
---|
1329 |
|
---|
1330 | //
|
---|
1331 | ////////////////////////////////////////////////////////////////////////////
|
---|
1332 | bool RTCM3Decoder::DecodeSBASEphemeris(unsigned char* data, int size) {
|
---|
1333 | bool decoded = false;
|
---|
1334 |
|
---|
1335 | if (size == 35) {
|
---|
1336 | t_ephSBAS eph;
|
---|
1337 | int i;
|
---|
1338 | uint64_t numbits = 0, bitfield = 0;
|
---|
1339 |
|
---|
1340 | data += 3; /* header */
|
---|
1341 | size -= 6; /* header + crc */
|
---|
1342 | SKIPBITS(12)
|
---|
1343 |
|
---|
1344 | eph._receptDateTime = currentDateAndTimeGPS();
|
---|
1345 |
|
---|
1346 | GETBITS(i, 6)
|
---|
1347 | eph._prn.set('S', 20 + i);
|
---|
1348 | GETBITS(eph._IODN, 8)
|
---|
1349 | GETBITS(i, 13)
|
---|
1350 | i <<= 4;
|
---|
1351 | eph._TOC.setTOD(i * 1000);
|
---|
1352 | GETBITS(i, 4)
|
---|
1353 | eph._ura = accuracyFromIndex(i, eph.type());
|
---|
1354 | GETFLOATSIGN(eph._x_pos, 30, 0.08)
|
---|
1355 | GETFLOATSIGN(eph._y_pos, 30, 0.08)
|
---|
1356 | GETFLOATSIGN(eph._z_pos, 25, 0.4)
|
---|
1357 | GETFLOATSIGN(eph._x_velocity, 17, 0.000625)
|
---|
1358 | GETFLOATSIGN(eph._y_velocity, 17, 0.000625)
|
---|
1359 | GETFLOATSIGN(eph._z_velocity, 18, 0.004)
|
---|
1360 | GETFLOATSIGN(eph._x_acceleration, 10, 0.0000125)
|
---|
1361 | GETFLOATSIGN(eph._y_acceleration, 10, 0.0000125)
|
---|
1362 | GETFLOATSIGN(eph._z_acceleration, 10, 0.0000625)
|
---|
1363 | GETFLOATSIGN(eph._agf0, 12, 1.0 / (1 << 30) / (1 << 1))
|
---|
1364 | GETFLOATSIGN(eph._agf1, 8, 1.0 / (1 << 30) / (1 << 10))
|
---|
1365 |
|
---|
1366 | eph._TOT = 0.9999E9;
|
---|
1367 | eph._health = 0;
|
---|
1368 |
|
---|
1369 | emit newSBASEph(eph);
|
---|
1370 | decoded = true;
|
---|
1371 | }
|
---|
1372 | return decoded;
|
---|
1373 | }
|
---|
1374 |
|
---|
1375 | //
|
---|
1376 | ////////////////////////////////////////////////////////////////////////////
|
---|
1377 | bool RTCM3Decoder::DecodeGalileoEphemeris(unsigned char* data, int size) {
|
---|
1378 | bool decoded = false;
|
---|
1379 | uint64_t numbits = 0, bitfield = 0;
|
---|
1380 | int i;
|
---|
1381 |
|
---|
1382 | data += 3; /* header */
|
---|
1383 | size -= 6; /* header + crc */
|
---|
1384 | GETBITS(i, 12)
|
---|
1385 |
|
---|
1386 | if ((i == 1046 && size == 61) || (i == 1045 && size == 60)) {
|
---|
1387 | t_ephGal eph;
|
---|
1388 |
|
---|
1389 | eph._receptDateTime = currentDateAndTimeGPS();
|
---|
1390 |
|
---|
1391 | eph._inav = (i == 1046);
|
---|
1392 | eph._fnav = (i == 1045);
|
---|
1393 | GETBITS(i, 6)
|
---|
1394 | eph._prn.set('E', i, eph._inav ? 1 : 0);
|
---|
1395 |
|
---|
1396 | GETBITS(eph._TOEweek, 12) //FIXME: roll-over after week 4095!!
|
---|
1397 | GETBITS(eph._IODnav, 10)
|
---|
1398 | GETBITS(i, 8)
|
---|
1399 | eph._SISA = accuracyFromIndex(i, eph.type());
|
---|
1400 | GETFLOATSIGN(eph._IDOT, 14, R2R_PI/(double)(1<<30)/(double)(1<<13))
|
---|
1401 | GETBITSFACTOR(i, 14, 60)
|
---|
1402 | eph._TOC.set(1024 + eph._TOEweek, i);
|
---|
1403 | GETFLOATSIGN(eph._clock_driftrate, 6, 1.0 / (double )(1 << 30) / (double )(1 << 29))
|
---|
1404 | GETFLOATSIGN(eph._clock_drift, 21, 1.0 / (double )(1 << 30) / (double )(1 << 16))
|
---|
1405 | GETFLOATSIGN(eph._clock_bias, 31, 1.0 / (double )(1 << 30) / (double )(1 << 4))
|
---|
1406 | GETFLOATSIGN(eph._Crs, 16, 1.0 / (double )(1 << 5))
|
---|
1407 | GETFLOATSIGN(eph._Delta_n, 16, R2R_PI/(double)(1<<30)/(double)(1<<13))
|
---|
1408 | GETFLOATSIGN(eph._M0, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1409 | GETFLOATSIGN(eph._Cuc, 16, 1.0 / (double )(1 << 29))
|
---|
1410 | GETFLOAT(eph._e, 32, 1.0 / (double )(1 << 30) / (double )(1 << 3))
|
---|
1411 | GETFLOATSIGN(eph._Cus, 16, 1.0 / (double )(1 << 29))
|
---|
1412 | GETFLOAT(eph._sqrt_A, 32, 1.0 / (double )(1 << 19))
|
---|
1413 | if (eph._sqrt_A < 1000.0) {return false;}
|
---|
1414 | GETBITSFACTOR(eph._TOEsec, 14, 60)
|
---|
1415 | /* FIXME: overwrite value, copied from old code */
|
---|
1416 | eph._TOEsec = eph._TOC.gpssec();
|
---|
1417 | GETFLOATSIGN(eph._Cic, 16, 1.0 / (double )(1 << 29))
|
---|
1418 | GETFLOATSIGN(eph._OMEGA0, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1419 | GETFLOATSIGN(eph._Cis, 16, 1.0 / (double )(1 << 29))
|
---|
1420 | GETFLOATSIGN(eph._i0, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1421 | GETFLOATSIGN(eph._Crc, 16, 1.0 / (double )(1 << 5))
|
---|
1422 | GETFLOATSIGN(eph._omega, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1423 | GETFLOATSIGN(eph._OMEGADOT, 24, R2R_PI/(double)(1<<30)/(double)(1<<13))
|
---|
1424 | GETFLOATSIGN(eph._BGD_1_5A, 10, 1.0 / (double )(1 << 30) / (double )(1 << 2))
|
---|
1425 | if (eph._inav) {
|
---|
1426 | /* set unused F/NAV values */
|
---|
1427 | eph._E5aHS = 0.0;
|
---|
1428 | eph._e5aDataInValid = false;
|
---|
1429 |
|
---|
1430 | GETFLOATSIGN(eph._BGD_1_5B, 10, 1.0 / (double )(1 << 30) / (double )(1 << 2))
|
---|
1431 | GETBITS(eph._E5bHS, 2)
|
---|
1432 | GETBITS(eph._e5bDataInValid, 1)
|
---|
1433 | GETBITS(eph._E1_bHS, 2)
|
---|
1434 | GETBITS(eph._e1DataInValid, 1)
|
---|
1435 | if (eph._E5bHS != eph._E1_bHS) {
|
---|
1436 | return false;
|
---|
1437 | }
|
---|
1438 | if ((eph._BGD_1_5A == 0.0 && fabs(eph._BGD_1_5B) > 1e-9) ||
|
---|
1439 | (eph._BGD_1_5B == 0.0 && fabs(eph._BGD_1_5A) > 1e-9)) {
|
---|
1440 | return false;
|
---|
1441 | }
|
---|
1442 | }
|
---|
1443 | else {
|
---|
1444 | /* set unused I/NAV values */
|
---|
1445 | eph._BGD_1_5B = 0.0;
|
---|
1446 | eph._E5bHS = 0.0;
|
---|
1447 | eph._E1_bHS = 0.0;
|
---|
1448 | eph._e1DataInValid = false;
|
---|
1449 | eph._e5bDataInValid = false;
|
---|
1450 |
|
---|
1451 | GETBITS(eph._E5aHS, 2)
|
---|
1452 | GETBITS(eph._e5aDataInValid, 1)
|
---|
1453 | }
|
---|
1454 | eph._TOT = 0.9999e9;
|
---|
1455 |
|
---|
1456 | emit newGalileoEph(eph);
|
---|
1457 | decoded = true;
|
---|
1458 | }
|
---|
1459 | return decoded;
|
---|
1460 | }
|
---|
1461 |
|
---|
1462 | //
|
---|
1463 | ////////////////////////////////////////////////////////////////////////////
|
---|
1464 | bool RTCM3Decoder::DecodeBDSEphemeris(unsigned char* data, int size) {
|
---|
1465 | bool decoded = false;
|
---|
1466 |
|
---|
1467 | if (size == 70) {
|
---|
1468 | t_ephBDS eph;
|
---|
1469 | int i;
|
---|
1470 | uint64_t numbits = 0, bitfield = 0;
|
---|
1471 |
|
---|
1472 | data += 3; /* header */
|
---|
1473 | size -= 6; /* header + crc */
|
---|
1474 | SKIPBITS(12)
|
---|
1475 |
|
---|
1476 | eph._receptDateTime = currentDateAndTimeGPS();
|
---|
1477 |
|
---|
1478 | GETBITS(i, 6)
|
---|
1479 | eph._prn.set('C', i);
|
---|
1480 |
|
---|
1481 | SKIPBITS(13)
|
---|
1482 | /* week */
|
---|
1483 | GETBITS(i, 4)
|
---|
1484 | eph._URA = accuracyFromIndex(i, eph.type());
|
---|
1485 | GETFLOATSIGN(eph._IDOT, 14, R2R_PI/(double)(1<<30)/(double)(1<<13))
|
---|
1486 | GETBITS(eph._AODE, 5)
|
---|
1487 | GETBITS(i, 17)
|
---|
1488 | i <<= 3;
|
---|
1489 | eph._TOC.setBDS(i * 1000);
|
---|
1490 | GETFLOATSIGN(eph._clock_driftrate, 11, 1.0 / (double )(1 << 30) / (double )(1 << 30) / (double )(1 << 6))
|
---|
1491 | GETFLOATSIGN(eph._clock_drift, 22, 1.0 / (double )(1 << 30) / (double )(1 << 20))
|
---|
1492 | GETFLOATSIGN(eph._clock_bias, 24, 1.0 / (double )(1 << 30) / (double )(1 << 3))
|
---|
1493 | GETBITS(eph._AODC, 5)
|
---|
1494 | GETFLOATSIGN(eph._Crs, 18, 1.0 / (double )(1 << 6))
|
---|
1495 | GETFLOATSIGN(eph._Delta_n, 16, R2R_PI/(double)(1<<30)/(double)(1<<13))
|
---|
1496 | GETFLOATSIGN(eph._M0, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1497 | GETFLOATSIGN(eph._Cuc, 18, 1.0 / (double )(1 << 30) / (double )(1 << 1))
|
---|
1498 | GETFLOAT(eph._e, 32, 1.0 / (double )(1 << 30) / (double )(1 << 3))
|
---|
1499 | GETFLOATSIGN(eph._Cus, 18, 1.0 / (double )(1 << 30) / (double )(1 << 1))
|
---|
1500 | GETFLOAT(eph._sqrt_A, 32, 1.0 / (double )(1 << 19))
|
---|
1501 | if (eph._sqrt_A < 1000.0) {return false;}
|
---|
1502 | GETBITS(i, 17)
|
---|
1503 | i <<= 3;
|
---|
1504 | eph._TOEsec = i;
|
---|
1505 | eph._TOE.setBDS(i * 1000);
|
---|
1506 | GETFLOATSIGN(eph._Cic, 18, 1.0 / (double )(1 << 30) / (double )(1 << 1))
|
---|
1507 | GETFLOATSIGN(eph._OMEGA0, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1508 | GETFLOATSIGN(eph._Cis, 18, 1.0 / (double )(1 << 30) / (double )(1 << 1))
|
---|
1509 | GETFLOATSIGN(eph._i0, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1510 | GETFLOATSIGN(eph._Crc, 18, 1.0 / (double )(1 << 6))
|
---|
1511 | GETFLOATSIGN(eph._omega, 32, R2R_PI/(double)(1<<30)/(double)(1<<1))
|
---|
1512 | GETFLOATSIGN(eph._OMEGADOT, 24, R2R_PI/(double)(1<<30)/(double)(1<<13))
|
---|
1513 | GETFLOATSIGN(eph._TGD1, 10, 0.0000000001)
|
---|
1514 | GETFLOATSIGN(eph._TGD2, 10, 0.0000000001)
|
---|
1515 | GETBITS(eph._SatH1, 1)
|
---|
1516 |
|
---|
1517 | eph._TOT = 0.9999E9;
|
---|
1518 | emit newBDSEph(eph);
|
---|
1519 | decoded = true;
|
---|
1520 | }
|
---|
1521 | return decoded;
|
---|
1522 | }
|
---|
1523 |
|
---|
1524 | //
|
---|
1525 | ////////////////////////////////////////////////////////////////////////////
|
---|
1526 | bool RTCM3Decoder::DecodeAntennaReceiver(unsigned char* data, int size) {
|
---|
1527 | char *antenna, anttype[256];
|
---|
1528 | char *dummy;
|
---|
1529 | char *receiver, rectype[256];
|
---|
1530 |
|
---|
1531 | int type;
|
---|
1532 |
|
---|
1533 | int dnum = -1;
|
---|
1534 | int antnum = -1;
|
---|
1535 | int recnum = -1;
|
---|
1536 | uint64_t numbits = 0, bitfield = 0;
|
---|
1537 |
|
---|
1538 | data += 3; /* header*/
|
---|
1539 | size -= 6; /* header + crc */
|
---|
1540 |
|
---|
1541 | GETBITS(type, 12)
|
---|
1542 | SKIPBITS(12)
|
---|
1543 | GETSTRING(antnum, antenna)
|
---|
1544 | if (antnum > -1 && antnum < 265) {
|
---|
1545 | memcpy(anttype, antenna, antnum);
|
---|
1546 | anttype[antnum] = 0;
|
---|
1547 | if (!_antType.contains(anttype)) {
|
---|
1548 | _antType.push_back(anttype);
|
---|
1549 | }
|
---|
1550 | }
|
---|
1551 | if (type == 1033) {
|
---|
1552 | SKIPBITS(8)
|
---|
1553 | GETSTRING(dnum, dummy)
|
---|
1554 | GETSTRING(recnum, receiver)
|
---|
1555 | if (recnum > -1 && recnum < 265) {
|
---|
1556 | memcpy(rectype, receiver, recnum);
|
---|
1557 | rectype[recnum] = 0;
|
---|
1558 | if (!_recType.contains(rectype)) {
|
---|
1559 | _recType.push_back(rectype);
|
---|
1560 | }
|
---|
1561 | }
|
---|
1562 | }
|
---|
1563 | return true;
|
---|
1564 | }
|
---|
1565 |
|
---|
1566 | //
|
---|
1567 | ////////////////////////////////////////////////////////////////////////////
|
---|
1568 | bool RTCM3Decoder::DecodeAntennaPosition(unsigned char* data, int size) {
|
---|
1569 | int type;
|
---|
1570 | uint64_t numbits = 0, bitfield = 0;
|
---|
1571 | double x, y, z;
|
---|
1572 |
|
---|
1573 | data += 3; /* header */
|
---|
1574 | size -= 6; /* header + crc */
|
---|
1575 |
|
---|
1576 | GETBITS(type, 12)
|
---|
1577 | _antList.push_back(t_antInfo());
|
---|
1578 | _antList.back().type = t_antInfo::ARP;
|
---|
1579 | SKIPBITS(22)
|
---|
1580 | GETBITSSIGN(x, 38)
|
---|
1581 | _antList.back().xx = x * 1e-4;
|
---|
1582 | SKIPBITS(2)
|
---|
1583 | GETBITSSIGN(y, 38)
|
---|
1584 | _antList.back().yy = y * 1e-4;
|
---|
1585 | SKIPBITS(2)
|
---|
1586 | GETBITSSIGN(z, 38)
|
---|
1587 | _antList.back().zz = z * 1e-4;
|
---|
1588 | if (type == 1006)
|
---|
1589 | {
|
---|
1590 | double h;
|
---|
1591 | GETBITS(h, 16)
|
---|
1592 | _antList.back().height = h * 1e-4;
|
---|
1593 | _antList.back().height_f = true;
|
---|
1594 | }
|
---|
1595 | _antList.back().message = type;
|
---|
1596 |
|
---|
1597 | return true;
|
---|
1598 | }
|
---|
1599 |
|
---|
1600 | //
|
---|
1601 | ////////////////////////////////////////////////////////////////////////////
|
---|
1602 | t_irc RTCM3Decoder::Decode(char* buffer, int bufLen, vector<string>& errmsg) {
|
---|
1603 | bool decoded = false;
|
---|
1604 |
|
---|
1605 | errmsg.clear();
|
---|
1606 |
|
---|
1607 | while (bufLen && _MessageSize < sizeof(_Message)) {
|
---|
1608 | int l = sizeof(_Message) - _MessageSize;
|
---|
1609 | if (l > bufLen)
|
---|
1610 | l = bufLen;
|
---|
1611 | memcpy(_Message + _MessageSize, buffer, l);
|
---|
1612 | _MessageSize += l;
|
---|
1613 | bufLen -= l;
|
---|
1614 | buffer += l;
|
---|
1615 | int id;
|
---|
1616 | while ((id = GetMessage())) {
|
---|
1617 | /* reset station ID for file loading as it can change */
|
---|
1618 | if (_rawFile)
|
---|
1619 | _staID = _rawFile->staID();
|
---|
1620 | /* store the id into the list of loaded blocks */
|
---|
1621 | _typeList.push_back(id);
|
---|
1622 |
|
---|
1623 | /* SSR I+II data handled in another function, already pass the
|
---|
1624 | * extracted data block. That does no harm, as it anyway skip everything
|
---|
1625 | * else. */
|
---|
1626 | if ((id >= 1057 && id <= 1068) ||
|
---|
1627 | (id >= 1240 && id <= 1270) ||
|
---|
1628 | (id == 4076)) {
|
---|
1629 | if (!_coDecoders.contains(_staID.toLatin1())) {
|
---|
1630 | _coDecoders[_staID.toLatin1()] = new RTCM3coDecoder(_staID);
|
---|
1631 | }
|
---|
1632 | RTCM3coDecoder* coDecoder = _coDecoders[_staID.toLatin1()];
|
---|
1633 | if (id == 4076) {
|
---|
1634 | coDecoder->setSsrFormatType(RTCM3coDecoder::IGSssr);
|
---|
1635 | }
|
---|
1636 | else {
|
---|
1637 | coDecoder->setSsrFormatType(RTCM3coDecoder::RTCMssr);
|
---|
1638 | }
|
---|
1639 | if (coDecoder->Decode(reinterpret_cast<char *>(_Message), _BlockSize,
|
---|
1640 | errmsg) == success) {
|
---|
1641 | decoded = true;
|
---|
1642 | }
|
---|
1643 | }
|
---|
1644 | else if (id >= 1070 && id <= 1229) { /* MSM */
|
---|
1645 | if (DecodeRTCM3MSM(_Message, _BlockSize))
|
---|
1646 | decoded = true;
|
---|
1647 | }
|
---|
1648 | else {
|
---|
1649 | switch (id) {
|
---|
1650 | case 1001:
|
---|
1651 | case 1003:
|
---|
1652 | emit(newMessage(
|
---|
1653 | QString("%1: Block %2 contain partial data! Ignored!")
|
---|
1654 | .arg(_staID).arg(id).toAscii(), true));
|
---|
1655 | break; /* no use decoding partial data ATM, remove break when data can be used */
|
---|
1656 | case 1002:
|
---|
1657 | case 1004:
|
---|
1658 | if (DecodeRTCM3GPS(_Message, _BlockSize))
|
---|
1659 | decoded = true;
|
---|
1660 | break;
|
---|
1661 | case 1009:
|
---|
1662 | case 1011:
|
---|
1663 | emit(newMessage(
|
---|
1664 | QString("%1: Block %2 contain partial data! Ignored!")
|
---|
1665 | .arg(_staID).arg(id).toAscii(), true));
|
---|
1666 | break; /* no use decoding partial data ATM, remove break when data can be used */
|
---|
1667 | case 1010:
|
---|
1668 | case 1012:
|
---|
1669 | if (DecodeRTCM3GLONASS(_Message, _BlockSize))
|
---|
1670 | decoded = true;
|
---|
1671 | break;
|
---|
1672 | case 1019:
|
---|
1673 | if (DecodeGPSEphemeris(_Message, _BlockSize))
|
---|
1674 | decoded = true;
|
---|
1675 | break;
|
---|
1676 | case 1020:
|
---|
1677 | if (DecodeGLONASSEphemeris(_Message, _BlockSize))
|
---|
1678 | decoded = true;
|
---|
1679 | break;
|
---|
1680 | case 1043:
|
---|
1681 | if (DecodeSBASEphemeris(_Message, _BlockSize))
|
---|
1682 | decoded = true;
|
---|
1683 | break;
|
---|
1684 | case 1044:
|
---|
1685 | if (DecodeQZSSEphemeris(_Message, _BlockSize))
|
---|
1686 | decoded = true;
|
---|
1687 | break;
|
---|
1688 | case 1041:
|
---|
1689 | if (DecodeIRNSSEphemeris(_Message, _BlockSize))
|
---|
1690 | decoded = true;
|
---|
1691 | break;
|
---|
1692 | case 1045:
|
---|
1693 | case 1046:
|
---|
1694 | // reject 1045/1046 from JAXA RTKLIB encoded stations
|
---|
1695 | if (_staID.contains("AIRA") || _staID.contains("STK2") ||
|
---|
1696 | _staID.contains("CCJ2") || _staID.contains("SYOG")) {
|
---|
1697 | break;
|
---|
1698 | }
|
---|
1699 | if (DecodeGalileoEphemeris(_Message, _BlockSize))
|
---|
1700 | decoded = true;
|
---|
1701 | break;
|
---|
1702 | case 1042:
|
---|
1703 | if (DecodeBDSEphemeris(_Message, _BlockSize))
|
---|
1704 | decoded = true;
|
---|
1705 | break;
|
---|
1706 | case 1007:
|
---|
1707 | case 1008:
|
---|
1708 | case 1033:
|
---|
1709 | DecodeAntennaReceiver(_Message, _BlockSize);
|
---|
1710 | break;
|
---|
1711 | case 1005:
|
---|
1712 | case 1006:
|
---|
1713 | DecodeAntennaPosition(_Message, _BlockSize);
|
---|
1714 | break;
|
---|
1715 | }
|
---|
1716 | }
|
---|
1717 | }
|
---|
1718 | }
|
---|
1719 | return decoded ? success : failure;
|
---|
1720 | }
|
---|
1721 | ;
|
---|
1722 |
|
---|
1723 | //
|
---|
1724 | ////////////////////////////////////////////////////////////////////////////
|
---|
1725 | uint32_t RTCM3Decoder::CRC24(long size, const unsigned char *buf) {
|
---|
1726 | uint32_t crc = 0;
|
---|
1727 | int i;
|
---|
1728 |
|
---|
1729 | while (size--) {
|
---|
1730 | crc ^= (*buf++) << (16);
|
---|
1731 | for (i = 0; i < 8; i++) {
|
---|
1732 | crc <<= 1;
|
---|
1733 | if (crc & 0x1000000)
|
---|
1734 | crc ^= 0x01864cfb;
|
---|
1735 | }
|
---|
1736 | }
|
---|
1737 | return crc;
|
---|
1738 | }
|
---|
1739 |
|
---|
1740 | //
|
---|
1741 | ////////////////////////////////////////////////////////////////////////////
|
---|
1742 | int RTCM3Decoder::GetMessage(void) {
|
---|
1743 | unsigned char *m, *e;
|
---|
1744 | int i;
|
---|
1745 |
|
---|
1746 | m = _Message + _SkipBytes;
|
---|
1747 | e = _Message + _MessageSize;
|
---|
1748 | _NeedBytes = _SkipBytes = 0;
|
---|
1749 | while (e - m >= 3) {
|
---|
1750 | if (m[0] == 0xD3) {
|
---|
1751 | _BlockSize = ((m[1] & 3) << 8) | m[2];
|
---|
1752 | if (e - m >= static_cast<int>(_BlockSize + 6)) {
|
---|
1753 | if (static_cast<uint32_t>((m[3 + _BlockSize] << 16)
|
---|
1754 | | (m[3 + _BlockSize + 1] << 8)
|
---|
1755 | | (m[3 + _BlockSize + 2])) == CRC24(_BlockSize + 3, m)) {
|
---|
1756 | _BlockSize += 6;
|
---|
1757 | _SkipBytes = _BlockSize;
|
---|
1758 | break;
|
---|
1759 | }
|
---|
1760 | else
|
---|
1761 | ++m;
|
---|
1762 | }
|
---|
1763 | else {
|
---|
1764 | _NeedBytes = _BlockSize;
|
---|
1765 | break;
|
---|
1766 | }
|
---|
1767 | }
|
---|
1768 | else
|
---|
1769 | ++m;
|
---|
1770 | }
|
---|
1771 | if (e - m < 3)
|
---|
1772 | _NeedBytes = 3;
|
---|
1773 |
|
---|
1774 | /* copy buffer to front */
|
---|
1775 | i = m - _Message;
|
---|
1776 | if (i && m < e)
|
---|
1777 | memmove(_Message, m, static_cast<size_t>(_MessageSize - i));
|
---|
1778 | _MessageSize -= i;
|
---|
1779 |
|
---|
1780 | return !_NeedBytes ? ((_Message[3] << 4) | (_Message[4] >> 4)) : 0;
|
---|
1781 | }
|
---|
1782 |
|
---|
1783 | // Time of Corrections
|
---|
1784 | //////////////////////////////////////////////////////////////////////////////
|
---|
1785 | int RTCM3Decoder::corrGPSEpochTime() const {
|
---|
1786 | return
|
---|
1787 | _coDecoders.size() > 0 ?
|
---|
1788 | _coDecoders.begin().value()->corrGPSEpochTime() : -1;
|
---|
1789 | }
|
---|