| 1 | #include <iostream>
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| 2 | #include <iomanip>
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| 3 | #include <algorithm>
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| 4 |
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| 5 | #include "RTCM2_2021.h"
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| 6 |
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| 7 | using namespace rtcm2;
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| 8 | using namespace std;
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| 9 |
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| 10 | const double ZEROVALUE = 1e-100;
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| 11 |
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| 12 | RTCM2_2021::RTCM2_2021() { }
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| 13 |
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| 14 |
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| 15 | void RTCM2_2021::extract(const RTCM2packet& P) {
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| 16 | if ( !P.valid() || (P.ID() != 20 && P.ID() != 21) ) {
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| 17 | return;
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| 18 | }
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| 19 |
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| 20 | // Error: at least 4 data words
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| 21 | if ( P.nDataWords()<5 ) {
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| 22 | #if ( DEBUG > 0 )
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| 23 | cerr << "Error in RTCM2_Obs::extract(): less than 3 DW ("
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| 24 | << P.nDataWords() << ") detected" << endl;
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| 25 | #endif
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| 26 | return;
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| 27 | };
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| 28 |
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| 29 | // Error: number of data words has to be odd number
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| 30 | if ( P.nDataWords()%2==0 ){
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| 31 | #if ( DEBUG > 0 )
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| 32 | cerr << "Error in RTCM2_Obs::extract(): odd number of DW ("
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| 33 | << P.nDataWords() << ") detected" << endl;
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| 34 | #endif
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| 35 | return;
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| 36 | };
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| 37 |
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| 38 | // Current epoch (mod 3600 sec)
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| 39 | double tt = 0.6*P.modZCount()
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| 40 | + P.getUnsignedBits(4,20)*1.0e-6;
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| 41 |
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| 42 | // Clear old epoch
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| 43 | if ( tt != tt_ || valid_ ) {
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| 44 | clear();
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| 45 | tt_ = tt;
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| 46 | valid_ = false;
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| 47 | }
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| 48 |
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| 49 |
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| 50 | // Frequency (exit if neither L1 nor L2)
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| 51 | bool isL1 = ( P.getUnsignedBits(0,1)==0 );
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| 52 | if ( P.getUnsignedBits(1,1)==1 ) {
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| 53 | return;
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| 54 | }
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| 55 |
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| 56 | // Number of satellites
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| 57 | unsigned nSat = (P.nDataWords() - 1) / 2;
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| 58 |
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| 59 | double multipleMsgInd = true;
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| 60 | for (unsigned iSat = 0; iSat < nSat; iSat++) {
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| 61 | bool multInd = P.getBits (iSat*48 + 24, 1);
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| 62 | bool isGPS = ( P.getUnsignedBits(iSat*48 + 26, 1)==0 );
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| 63 | unsigned PRN = P.getUnsignedBits(iSat*48 + 27, 5);
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| 64 |
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| 65 | multipleMsgInd = multipleMsgInd && multInd;
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| 66 |
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| 67 | if ( !isGPS ) {
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| 68 | PRN += 200;
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| 69 | }
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| 70 | if ( PRN == 0 ) {
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| 71 | PRN = 32;
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| 72 | }
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| 73 |
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| 74 | HiResCorr* corr = 0;
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| 75 | if ( !(corr = find_i(PRN)) ) {
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| 76 | data_i_[PRN] = HiResCorr();
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| 77 | corr = &(data_i_[PRN]);
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| 78 | }
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| 79 | if ( !find(PRN) ) {
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| 80 | data[PRN] = corr;
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| 81 | }
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| 82 |
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| 83 | corr->PRN = PRN;
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| 84 | corr->tt = tt_;
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| 85 |
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| 86 | // Message number 20
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| 87 | if ( P.ID() == 20 ) {
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| 88 | unsigned lossLock = P.getUnsignedBits(iSat*48 + 35, 5);
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| 89 | unsigned IOD = P.getUnsignedBits(iSat*48 + 40, 8);
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| 90 | double corrVal = P.getBits (iSat*48 + 48, 24) / 256.0;
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| 91 |
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| 92 | if ( isL1 ) {
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| 93 | corr->phase1 = (corrVal ? corrVal : ZEROVALUE);
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| 94 | corr->slip1 = (corr->lock1 != lossLock);
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| 95 | corr->lock1 = lossLock;
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| 96 | corr->IODp1 = IOD;
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| 97 | }
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| 98 | else {
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| 99 | corr->phase2 = (corrVal ? corrVal : ZEROVALUE);
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| 100 | corr->slip2 = (corr->lock2 != lossLock);
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| 101 | corr->lock2 = lossLock;
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| 102 | corr->IODp2 = IOD;
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| 103 | }
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| 104 | }
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| 105 |
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| 106 | // Message number 21
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| 107 | else if ( P.ID() == 21 ) {
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| 108 | bool P_CA_Ind = P.getBits (iSat*48 + 25, 1);
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| 109 | double dcorrUnit = ( P.getUnsignedBits(iSat*48 + 32, 1) ? 0.032 : 0.002);
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| 110 | double corrUnit = ( P.getUnsignedBits(iSat*48 + 36, 1) ? 0.320 : 0.020);
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| 111 | unsigned IOD = P.getUnsignedBits(iSat*48 + 40, 8);
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| 112 | double corrVal = P.getBits (iSat*48 + 48, 16) * corrUnit;
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| 113 | double dcorrVal = P.getBits (iSat*48 + 64, 8) * dcorrUnit;
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| 114 |
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| 115 | if ( isL1 ) {
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| 116 | corr-> range1 = (corrVal ? corrVal : ZEROVALUE);
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| 117 | corr->drange1 = dcorrVal;
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| 118 | corr->IODr1 = IOD;
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| 119 | corr->Pind1 = P_CA_Ind;
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| 120 | }
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| 121 | else {
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| 122 | corr-> range2 = (corrVal ? corrVal : ZEROVALUE);
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| 123 | corr->drange2 = dcorrVal;
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| 124 | corr->IODr2 = IOD;
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| 125 | corr->Pind2 = P_CA_Ind;
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| 126 | }
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| 127 | }
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| 128 | }
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| 129 |
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| 130 | valid_ = !multipleMsgInd;
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| 131 | }
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| 132 |
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| 133 | const RTCM2_2021::HiResCorr* RTCM2_2021::find(unsigned PRN) {
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| 134 | std::map<unsigned, const HiResCorr*>::const_iterator ii = data.find(PRN);
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| 135 | return (ii != data.end() ? ii->second : 0);
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| 136 | }
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| 137 |
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| 138 |
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| 139 | RTCM2_2021::HiResCorr* RTCM2_2021::find_i(unsigned PRN) {
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| 140 | std::map<unsigned, HiResCorr>::iterator ii = data_i_.find(PRN);
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| 141 | return (ii != data_i_.end() ? &(ii->second) : 0);
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| 142 | }
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| 143 |
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| 144 |
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| 145 | void RTCM2_2021::clear() {
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| 146 | tt_ = 0;
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| 147 | valid_ = false;
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| 148 | for (map<unsigned, HiResCorr>::iterator
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| 149 | ii = data_i_.begin(); ii != data_i_.end(); ii++) {
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| 150 | ii->second.reset();
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| 151 | }
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| 152 | data.clear();
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| 153 | }
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| 154 |
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| 155 |
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| 156 | RTCM2_2021::HiResCorr::HiResCorr() :
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| 157 | PRN(0), tt(0),
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| 158 | phase1 (0), phase2 (2),
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| 159 | lock1 (0), lock2 (0),
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| 160 | slip1 (false), slip2 (false),
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| 161 | IODp1 (0), IODp2 (0),
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| 162 | range1 (0), range2 (0),
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| 163 | drange1(0), drange2(0),
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| 164 | Pind1 (false), Pind2 (false),
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| 165 | IODr1 (0), IODr2 (0) {
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| 166 | }
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| 167 |
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| 168 | void RTCM2_2021::HiResCorr::reset() {
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| 169 | // does not reset 'lock' indicators and PRN
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| 170 | tt = 0;
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| 171 | phase1 = 0;
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| 172 | phase2 = 0;
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| 173 | slip1 = false;
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| 174 | slip2 = false;
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| 175 | IODp1 = 0;
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| 176 | IODp2 = 0;
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| 177 |
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| 178 | range1 = 0;
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| 179 | range2 = 0;
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| 180 | drange1 = 0;
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| 181 | drange2 = 0;
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| 182 | IODr1 = 0;
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| 183 | IODr2 = 0;
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| 184 | Pind1 = false;
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| 185 | Pind2 = false;
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| 186 | }
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| 187 |
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| 188 | std::ostream& operator << (std::ostream& out, const RTCM2_2021::HiResCorr& cc) {
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| 189 | out.setf(ios::fixed);
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| 190 | out << setw(8) << setprecision(8) << cc.tt
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| 191 | << ' ' << setw(2) << cc.PRN
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| 192 | << " L1 "
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| 193 | << ' ' << setw(8) << setprecision(3) << (cc.phase1 ? cc.phase1 : 9999.999)
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| 194 | << ' ' << setw(1) << (cc.phase1 ? (cc.slip1 ? '1' : '0') : '.')
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| 195 | << ' ' << setw(2) << (cc.phase1 ? cc.lock1 : 99)
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| 196 | << ' ' << setw(3) << (cc.phase1 ? cc.IODp1 : 999)
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| 197 | << " L2 "
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| 198 | << ' ' << setw(8) << setprecision(3) << (cc.phase2 ? cc.phase2 : 9999.999)
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| 199 | << ' ' << setw(1) << (cc.phase2 ? (cc.slip2 ? '1' : '0') : '.')
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| 200 | << ' ' << setw(2) << (cc.phase2 ? cc.lock2 : 99)
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| 201 | << ' ' << setw(3) << (cc.phase2 ? cc.IODp2 : 999)
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| 202 | << " P1 "
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| 203 | << ' ' << setw(8) << setprecision(3) << (cc.range1 ? cc.range1 : 9999.999)
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| 204 | << ' ' << setw(3) << (cc.range1 ? cc.IODr1 : 999)
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| 205 | << " P2 "
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| 206 | << ' ' << setw(8) << setprecision(3) << (cc.range2 ? cc.range2 : 9999.999)
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| 207 | << ' ' << setw(3) << (cc.phase2 ? cc.IODr2 : 999);
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| 208 |
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| 209 | return out;
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| 210 | }
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| 211 |
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| 212 |
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| 213 | //////////////////////////////////////////////////////////////////////////////////////////////////////////////
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| 214 |
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| 215 |
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| 216 | void RTCM2_22::extract(const RTCM2packet& P) {
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| 217 | if ( P.ID() != 22 ) {
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| 218 | return;
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| 219 | }
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| 220 |
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| 221 | const double dL1unit = 0.01 / 256;
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| 222 |
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| 223 | validMsg = true;
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| 224 |
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| 225 | dL1[0] = P.getBits( 0, 8) * dL1unit;
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| 226 | dL1[1] = P.getBits( 8, 8) * dL1unit;
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| 227 | dL1[2] = P.getBits(16, 8) * dL1unit;
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| 228 |
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| 229 | dL2[0] = 0.0;
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| 230 | dL2[1] = 0.0;
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| 231 | dL2[2] = 0.0;
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| 232 | }
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| 233 |
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| 234 | ///////////////////////////////
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| 235 |
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