source: ntrip/trunk/BNC/src/PPP/pppFilter.cpp@ 9657

Last change on this file since 9657 was 9657, checked in by stuerze, 2 years ago

minor changes regarding PPP
  • Property svn:keywords set to Author Date Id Rev URL;svn:eol-style=native
  • Property svn:mime-type set to text/plain
File size: 27.7 KB
Line 
1/* -------------------------------------------------------------------------
2 * BKG NTRIP Client
3 * -------------------------------------------------------------------------
4 *
5 * Class: t_pppFilter
6 *
7 * Purpose: Filter Adjustment
8 *
9 * Author: L. Mervart
10 *
11 * Created: 29-Jul-2014
12 *
13 * Changes:
14 *
15 * -----------------------------------------------------------------------*/
16
17#include <iostream>
18#include <iomanip>
19#include <cmath>
20#include <newmat.h>
21#include <newmatio.h>
22#include <newmatap.h>
23
24#include "pppFilter.h"
25#include "bncutils.h"
26#include "pppParlist.h"
27#include "pppObsPool.h"
28#include "pppStation.h"
29
30using namespace BNC_PPP;
31using namespace std;
32
33// Constructor
34////////////////////////////////////////////////////////////////////////////
35t_pppFilter::t_pppFilter(t_pppObsPool *obsPool) {
36 _numSat = 0;
37 _obsPool = obsPool;
38 _refPrn = t_prn();
39 _datumTrafo = new t_datumTrafo();
40}
41
42// Destructor
43////////////////////////////////////////////////////////////////////////////
44t_pppFilter::~t_pppFilter() {
45 delete _datumTrafo;
46}
47
48// Process Single Epoch
49////////////////////////////////////////////////////////////////////////////
50t_irc t_pppFilter::processEpoch() {
51 _numSat = 0;
52 const double maxSolGap = 60.0;
53
54 // Vector of all Observations
55 // --------------------------
56 t_pppObsPool::t_epoch *epoch = _obsPool->lastEpoch();
57 if (!epoch) {
58 return failure;
59 }
60 vector<t_pppSatObs*> &allObs = epoch->obsVector();
61
62 // Time of the Epoch
63 // -----------------
64 _epoTime = epoch->epoTime();
65
66 if (!_firstEpoTime.valid() || !_lastEpoTimeOK.valid()
67 || (maxSolGap > 0.0 && _epoTime - _lastEpoTimeOK > maxSolGap)) {
68 _firstEpoTime = _epoTime;
69 }
70
71 string epoTimeStr = string(_epoTime);
72
73 const QMap<char, t_pppRefSat*> &refSatMap = epoch->refSatMap();
74
75 //LOG << "processEpoch: printParams before set" << endl;
76 //_parlist.printParams(_epoTime);
77
78 //--
79 // Set Parameters
80 if (_parlist.set(_epoTime, allObs, refSatMap) != success) {
81 return failure;
82 }
83
84 if (OPT->_obsModelType == OPT->DCMcodeBias ||
85 OPT->_obsModelType == OPT->DCMphaseBias) {
86#ifdef BNC_DEBUG_PPP
87 _parlist.printParams(_epoTime);
88#endif
89 }
90 // Status Vector, Variance-Covariance Matrix
91 // -----------------------------------------
92 ColumnVector xFltOld = _xFlt;
93 SymmetricMatrix QFltOld = _QFlt;
94 setStateVectorAndVarCovMatrix(xFltOld, QFltOld);
95
96 // Pre-Process Satellite Systems separately
97 // ----------------------------------------
98 bool preProcessing = false;
99 if (OPT->_obsModelType == OPT->DCMcodeBias ||
100 OPT->_obsModelType == OPT->DCMphaseBias) {
101 preProcessing = true;
102 const QList<char> &usedSystems = _parlist.usedSystems();
103 for (int iSys = 0; iSys < usedSystems.size(); iSys++) {
104 char sys = usedSystems[iSys];
105 _refPrn.set(sys, 0);
106 if (OPT->_refSatRequired) {
107 _refPrn = refSatMap[sys]->prn();
108 }
109 vector<t_pppSatObs*> obsVector;
110 for (unsigned jj = 0; jj < allObs.size(); jj++) {
111 if (allObs[jj]->prn().system() == sys) {
112 obsVector.push_back(allObs[jj]);
113 }
114 }
115 if (iSys == 0) {
116 _datumTrafo->setFirstSystem(sys);
117 }
118 if (processSystem(OPT->LCs(sys), obsVector, _refPrn,
119 epoch->pseudoObsIono(), preProcessing) != success) {
120 LOG << sys << ": processSystem != success (pre-processing)" << endl;
121 _xFlt = xFltOld;
122 _QFlt = QFltOld;
123 _obsPool->deleteLastEpoch();
124 restoreState(2);
125 return failure;
126 }
127 }
128 // refSat change required?
129 // -----------------------
130 if (_obsPool->refSatChangeRequired()) {
131 _xFlt = xFltOld;
132 _QFlt = QFltOld;
133 return success;
134 } else if (!_obsPool->refSatChangeRequired()) {
135 initDatumTransformation(allObs, epoch->pseudoObsIono());
136 }
137 }
138
139 // Process Satellite Systems separately
140 // ------------------------------------
141 preProcessing = false;
142 const QList<char> &usedSystems = _parlist.usedSystems();
143 for (int iSys = 0; iSys < usedSystems.size(); iSys++) {
144 char sys = usedSystems[iSys];
145 _refPrn.set(sys, 0);
146 if (OPT->_refSatRequired) {
147 _refPrn = refSatMap[sys]->prn();
148 }
149 unsigned int num = 0;
150 vector<t_pppSatObs*> obsVector;
151 for (unsigned jj = 0; jj < allObs.size(); jj++) {
152 if (allObs[jj]->prn().system() == sys) {
153 obsVector.push_back(allObs[jj]);
154 ++num;
155 }
156 }
157 if (iSys == 0 && OPT->_obsModelType == OPT->UncombPPP) {
158 _datumTrafo->setFirstSystem(sys);
159 }
160 LOG << epoTimeStr << " SATNUM " << sys << ' ' << right << setw(2) << num
161 << endl;
162 if (processSystem(OPT->LCs(sys), obsVector, _refPrn, epoch->pseudoObsIono(),
163 preProcessing) != success) {
164 LOG << "processSystem != success (fin-processing)" << endl;
165 if (OPT->_obsModelType == OPT->DCMcodeBias ||
166 OPT->_obsModelType == OPT->DCMphaseBias) {
167 _xFlt = xFltOld;
168 _QFlt = QFltOld;
169 _obsPool->deleteLastEpoch();
170 restoreState(3);
171 }
172 return failure;
173 }
174 }
175
176 // close epoch processing
177 // ----------------------
178 cmpDOP(allObs, refSatMap);
179 _parlist.printResult(_epoTime, _QFlt, _xFlt);
180 _lastEpoTimeOK = _epoTime; // remember time of last successful epoch processing
181 return success;
182}
183
184// Process Selected LCs
185////////////////////////////////////////////////////////////////////////////
186t_irc t_pppFilter::processSystem(const vector<t_lc::type> &LCs,
187 const vector<t_pppSatObs*> &obsVector, const t_prn &refPrn,
188 bool pseudoObsIonoAvailable, bool preProcessing) {
189 LOG.setf(ios::fixed);
190 char sys = refPrn.system();
191
192 // Detect Cycle Slips
193 // ------------------
194 if (detectCycleSlips(LCs, obsVector, refPrn, preProcessing) != success) {
195 return failure;
196 }
197 if (preProcessing && _obsPool->refSatChangeRequired(sys)) {
198 return success;
199 }
200
201 ColumnVector xSav = _xFlt;
202 SymmetricMatrix QSav = _QFlt;
203 string epoTimeStr = string(_epoTime);
204 const vector<t_pppParam*> &params = _parlist.params();
205 unsigned nPar = _parlist.nPar();
206
207 unsigned usedLCs = LCs.size();
208 if (OPT->_pseudoObsIono && !pseudoObsIonoAvailable) {
209 usedLCs -= 1; // GIM not used
210 }
211 // max Obs
212 unsigned maxObs = obsVector.size() * usedLCs;
213
214 if (OPT->_pseudoObsIono && pseudoObsIonoAvailable) {
215 maxObs -= 1; // pseudo obs iono with respect to refSat
216 }
217
218 // Outlier Detection Loop
219 // ----------------------
220 for (unsigned iOutlier = 0; iOutlier < maxObs; iOutlier++) {
221
222 if (iOutlier > 0) {
223 _xFlt = xSav;
224 _QFlt = QSav;
225 }
226
227 // First-Design Matrix, Terms Observed-Computed, Weight Matrix
228 // -----------------------------------------------------------
229 Matrix AA(maxObs, nPar);
230 ColumnVector ll(maxObs);
231 DiagonalMatrix PP(maxObs);
232 PP = 0.0;
233
234 int iObs = -1;
235 vector<t_pppSatObs*> usedObs;
236 vector<t_lc::type> usedTypes;
237
238 // Real Observations
239 // =================
240 double nSat = 0;
241 for (unsigned ii = 0; ii < obsVector.size(); ii++) {
242 t_pppSatObs *obs = obsVector[ii];
243 if (iOutlier == 0 && !preProcessing) {
244 obs->resetOutlier();
245 }
246 if (!obs->outlier()) {
247 nSat++;
248 for (unsigned jj = 0; jj < usedLCs; jj++) {
249 const t_lc::type tLC = LCs[jj];
250 if (tLC == t_lc::GIM) {
251 continue;
252 }
253 ++iObs;
254 usedObs.push_back(obs);
255 usedTypes.push_back(tLC);
256 for (unsigned iPar = 0; iPar < nPar; iPar++) {
257 const t_pppParam *par = params[iPar];
258 AA[iObs][iPar] = par->partial(_epoTime, obs, tLC, refPrn);
259 }
260 ll[iObs] = obs->obsValue(tLC) - obs->cmpValue(tLC)
261 - DotProduct(_x0, AA.Row(iObs + 1));
262 PP[iObs] = 1.0 / (obs->sigma(tLC) * obs->sigma(tLC));
263 }
264 }
265 }
266
267 // Check number of observations
268 // ----------------------------
269 if (iObs == -1) {
270 LOG << " number of observations == -1\n";
271 return failure;
272 }
273
274 if ((!iOutlier) && (OPT->_obsModelType == OPT->DCMcodeBias ||
275 OPT->_obsModelType == OPT->DCMphaseBias) && (!preProcessing)) {
276 _datumTrafo->updateIndices(sys, iObs + 1);
277 _datumTrafo->prepareAA(AA.SubMatrix(1, iObs + 1, 1, _parlist.nPar()), 1);
278 }
279
280 // Pseudo Obs Iono
281 // ================
282 if (OPT->_pseudoObsIono && pseudoObsIonoAvailable) {
283 for (unsigned ii = 0; ii < obsVector.size(); ii++) {
284 t_pppSatObs *obs = obsVector[ii];
285 if (!obs->outlier()) {
286 for (unsigned jj = 0; jj < usedLCs; jj++) {
287 const t_lc::type tLC = LCs[jj];
288 if (tLC == t_lc::GIM && !obs->isReference()) {
289 ++iObs;
290 } else {
291 continue;
292 }
293 usedObs.push_back(obs);
294 usedTypes.push_back(tLC);
295 for (unsigned iPar = 0; iPar < nPar; iPar++) {
296 const t_pppParam *par = params[iPar];
297 AA[iObs][iPar] = par->partial(_epoTime, obs, tLC, refPrn);
298 }
299 ll[iObs] = obs->obsValue(tLC) - obs->cmpValue(tLC)
300 - DotProduct(_x0, AA.Row(iObs + 1));
301 PP[iObs] = 1.0 / (obs->sigma(tLC) * obs->sigma(tLC));
302 }
303 }
304 }
305 }
306
307 // Truncate matrices
308 // -----------------
309 AA = AA.Rows(1, iObs + 1);
310 ll = ll.Rows(1, iObs + 1);
311 PP = PP.SymSubMatrix(1, iObs + 1);
312
313 // Kalman update step
314 // ------------------
315 kalman(AA, ll, PP, _QFlt, _xFlt);
316
317 // Check Residuals
318 // ---------------
319 ColumnVector vv = AA * _xFlt - ll;
320 double maxOutlier = 0.0;
321 int maxOutlierIndex = -1;
322 t_lc::type maxOutlierLC = t_lc::dummy;
323 for (unsigned ii = 0; ii < usedObs.size(); ii++) {
324 const t_lc::type tLC = usedTypes[ii];
325 double res = fabs(vv[ii]);
326 if (res > usedObs[ii]->maxRes(tLC)) {
327 if (res > fabs(maxOutlier)) {
328 maxOutlier = vv[ii];
329 maxOutlierIndex = ii;
330 maxOutlierLC = tLC;
331 }
332 }
333 }
334
335 // Mark outlier or break outlier detection loop
336 // --------------------------------------------
337 if (maxOutlierIndex > -1) {
338 t_pppSatObs *obs = usedObs[maxOutlierIndex];
339 t_pppParam *par = 0;
340 for (unsigned iPar = 0; iPar < nPar; iPar++) {
341 t_pppParam *hlp = params[iPar];
342 if (hlp->type() == t_pppParam::amb && hlp->prn() == obs->prn()
343 && hlp->tLC() == usedTypes[maxOutlierIndex]) {
344 par = hlp;
345 }
346 }
347 if (preProcessing) {
348 // for refSats no ambiguity parameter exists
349 if ((obs->prn() == refPrn)
350 && (t_lc::toString(maxOutlierLC) == "l1"
351 || t_lc::toString(maxOutlierLC) == "l2")) {
352 _obsPool->setRefSatChangeRequired(sys, true);
353 LOG << epoTimeStr << " Outlier ("
354 << ((preProcessing) ? "pre-processing) " : "fin-processing) ")
355 << t_lc::toString(maxOutlierLC) << ' ' << obs->prn().toString()
356 << ' ' << setw(8) << setprecision(4) << maxOutlier << endl;
357 break;
358 } else {
359 obs->setOutlier();
360 }
361 } else { // fin-processing
362 LOG << epoTimeStr << " Outlier " << t_lc::toString(maxOutlierLC) << ' '
363 << obs->prn().toString() << ' ' << setw(8) << setprecision(4)
364 << maxOutlier << endl;
365 if (par) {
366 resetAmb(par->prn(), obsVector, &QSav, &xSav);
367 } else {
368 obs->setOutlier();
369 }
370 }
371 }
372 // Print Residuals
373 // ---------------
374 else {
375 if (!preProcessing) {
376 for (unsigned jj = 0; jj < LCs.size(); jj++) {
377 for (unsigned ii = 0; ii < usedObs.size(); ii++) {
378 const t_lc::type tLC = usedTypes[ii];
379 t_pppSatObs *obs = usedObs[ii];
380 if (tLC == LCs[jj]) {
381 obs->setRes(tLC, vv[ii]);
382 LOG << epoTimeStr << " RES " << left << setw(3)
383 << t_lc::toString(tLC) << right << ' ';
384 if (t_lc::toString(tLC) == "Tz0") {
385 LOG << sys << " ";
386 } else {
387 LOG << obs->prn().toString();
388 }
389 LOG << setw(9) << setprecision(4) << vv[ii] << endl;
390 }
391 }
392 }
393 }
394 break;
395 }
396 }
397 return success;
398}
399
400// Cycle-Slip Detection
401////////////////////////////////////////////////////////////////////////////
402t_irc t_pppFilter::detectCycleSlips(const vector<t_lc::type> &LCs,
403 const vector<t_pppSatObs*> &obsVector, const t_prn &refPrn,
404 bool preProcessing) {
405 const double SLIP = 20.0;
406 char sys = refPrn.system();
407 string epoTimeStr = string(_epoTime);
408 const vector<t_pppParam*> &params = _parlist.params();
409 unsigned nPar = _parlist.nPar();
410
411 for (unsigned ii = 0; ii < LCs.size(); ii++) {
412 const t_lc::type &tLC = LCs[ii];
413 if (t_lc::includesPhase(tLC)) {
414 for (unsigned iObs = 0; iObs < obsVector.size(); iObs++) {
415 const t_pppSatObs *obs = obsVector[iObs];
416
417 // Check set Slips and Jump Counters
418 // ---------------------------------
419 bool slip = false;
420
421 // in pre-processing only the reference satellite has to be checked
422 if (preProcessing && obs->prn() != refPrn) {
423 continue;
424 }
425
426 if (obs->slip()) {
427 LOG << epoTimeStr << "cycle slip set (obs) " << obs->prn().toString()
428 << endl;
429 slip = true;
430 }
431
432 if (_slips[obs->prn()]._obsSlipCounter != -1
433 && _slips[obs->prn()]._obsSlipCounter != obs->slipCounter()) {
434 LOG << epoTimeStr << "cycle slip set (obsSlipCounter) "
435 << obs->prn().toString() << endl;
436 slip = true;
437 }
438 if (!preProcessing) {
439 _slips[obs->prn()]._obsSlipCounter = obs->slipCounter();
440 }
441 if (_slips[obs->prn()]._biasJumpCounter != -1
442 && _slips[obs->prn()]._biasJumpCounter != obs->biasJumpCounter()) {
443 LOG << epoTimeStr << "cycle slip set (biasJumpCounter) "
444 << obs->prn().toString() << endl;
445 slip = true;
446 }
447 if (!preProcessing) {
448 _slips[obs->prn()]._biasJumpCounter = obs->biasJumpCounter();
449 }
450 // Slip Set
451 // --------
452 if (slip) {
453 if (preProcessing) {
454 _obsPool->setRefSatChangeRequired(sys, true);
455 } else {
456 resetAmb(obs->prn(), obsVector);
457 }
458 }
459 // Check Pre-Fit Residuals
460 // -----------------------
461 else {
462 if (refPrn != t_prn()) {
463 return success;
464 }
465 ColumnVector AA(nPar);
466 for (unsigned iPar = 0; iPar < nPar; iPar++) {
467 const t_pppParam *par = params[iPar];
468 AA[iPar] = par->partial(_epoTime, obs, tLC, refPrn);
469 }
470 double ll = obs->obsValue(tLC) - obs->cmpValue(tLC)
471 - DotProduct(_x0, AA);
472 double vv = DotProduct(AA, _xFlt) - ll;
473 if (fabs(vv) > SLIP) {
474 LOG << epoTimeStr << " cycle slip detected " << t_lc::toString(tLC)
475 << ' ' << obs->prn().toString() << ' ' << setw(8)
476 << setprecision(4) << vv << endl;
477 if (preProcessing) {
478 _obsPool->setRefSatChangeRequired(sys, true);
479 } else {
480 resetAmb(obs->prn(), obsVector);
481 }
482 }
483 }
484 }
485 }
486 }
487 return success;
488}
489
490// Reset Ambiguity Parameter (cycle slip)
491////////////////////////////////////////////////////////////////////////////
492t_irc t_pppFilter::resetAmb(t_prn prn, const vector<t_pppSatObs*> &obsVector,
493 SymmetricMatrix *QSav, ColumnVector *xSav) {
494
495 t_irc irc = failure;
496 vector<t_pppParam*> &params = _parlist.params();
497 for (unsigned iPar = 0; iPar < params.size(); iPar++) {
498 t_pppParam *par = params[iPar];
499 if (par->type() == t_pppParam::amb && par->prn() == prn) {
500 int ind = par->indexNew();
501 t_lc::type tLC = par->tLC();
502 LOG << string(_epoTime) << " RESET " << par->toString() << endl;
503 delete par;
504 par = new t_pppParam(t_pppParam::amb, prn, tLC, &obsVector);
505 par->setIndex(ind);
506 params[iPar] = par;
507 for (unsigned ii = 1; ii <= params.size(); ii++) {
508 _QFlt(ii, ind + 1) = 0.0;
509 if (QSav) {
510 (*QSav)(ii, ind + 1) = 0.0;
511 }
512 }
513 _QFlt(ind + 1, ind + 1) = par->sigma0() * par->sigma0();
514 if (QSav) {
515 (*QSav)(ind + 1, ind + 1) = _QFlt(ind + 1, ind + 1);
516 }
517 _xFlt[ind] = 0.0;
518 if (xSav) {
519 (*xSav)[ind] = _xFlt[ind];
520 }
521 _x0[ind] = par->x0();
522 irc = success;
523 }
524 }
525
526 return irc;
527}
528
529// Add infinite noise to iono
530////////////////////////////////////////////////////////////////////////////
531t_irc t_pppFilter::addNoiseToPar(t_pppParam::e_type parType, char sys) {
532 t_irc irc = failure;
533 vector<t_pppParam*> &params = _parlist.params();
534 for (unsigned iPar = 0; iPar < params.size(); iPar++) {
535 t_pppParam *par = params[iPar];
536 if (par->type() == parType && par->prn().system() == sys) {
537 int ind = par->indexNew();
538 LOG << string(_epoTime) << " ADD " << par->toString() << "_NOISE TO "
539 << par->prn().toString() << endl;
540 par->setIndex(ind);
541 _QFlt(ind + 1, ind + 1) = par->sigma0() * par->sigma0();
542 irc = success;
543 }
544 }
545
546 return irc;
547}
548
549// Compute various DOP Values
550////////////////////////////////////////////////////////////////////////////
551void t_pppFilter::cmpDOP(const vector<t_pppSatObs*> &obsVector,
552 const QMap<char, t_pppRefSat*> &refSatMap) {
553
554 _dop.reset();
555
556 try {
557 const unsigned numPar = 4;
558 Matrix AA(obsVector.size(), numPar);
559 _numSat = 0;
560 for (unsigned ii = 0; ii < obsVector.size(); ii++) {
561 t_pppSatObs *obs = obsVector[ii];
562 char sys = obs->prn().system();
563 t_prn refPrn = t_prn();
564 if (OPT->_refSatRequired) {
565 refPrn = refSatMap[sys]->prn();
566 }
567 if (obs->isValid() && !obs->outlier()) {
568 ++_numSat;
569 for (unsigned iPar = 0; iPar < numPar; iPar++) {
570 const t_pppParam *par = _parlist.params()[iPar];
571 AA[_numSat - 1][iPar] = par->partial(_epoTime, obs, t_lc::c1, refPrn);
572 }
573 }
574 }
575 if (_numSat < 4) {
576 return;
577 }
578 AA = AA.Rows(1, _numSat);
579 SymmetricMatrix NN;
580 NN << AA.t() * AA;
581 SymmetricMatrix QQ = NN.i();
582
583 _dop.H = sqrt(QQ(1, 1) + QQ(2, 2));
584 _dop.V = sqrt(QQ(3, 3));
585 _dop.P = sqrt(QQ(1, 1) + QQ(2, 2) + QQ(3, 3));
586 _dop.T = sqrt(QQ(4, 4));
587 _dop.G = sqrt(QQ(1, 1) + QQ(2, 2) + QQ(3, 3) + QQ(4, 4));
588 } catch (...) {
589 }
590}
591
592//
593////////////////////////////////////////////////////////////////////////////
594void t_pppFilter::predictCovCrdPart(const SymmetricMatrix &QFltOld) {
595
596 const vector<t_pppParam*> &params = _parlist.params();
597 if (params.size() < 3) {
598 return;
599 }
600
601 bool first = (params[0]->indexOld() < 0);
602
603 SymmetricMatrix Qneu(3);
604 Qneu = 0.0;
605 for (unsigned ii = 0; ii < 3; ii++) {
606 const t_pppParam *par = params[ii];
607 if (first) {
608 Qneu[ii][ii] = par->sigma0() * par->sigma0();
609 } else {
610 Qneu[ii][ii] = par->noise() * par->noise();
611 }
612 }
613
614 const t_pppStation *sta = PPP_CLIENT->staRover();
615 SymmetricMatrix Qxyz(3);
616 covariNEU_XYZ(Qneu, sta->ellApr().data(), Qxyz);
617
618 if (first) {
619 _QFlt.SymSubMatrix(1, 3) = Qxyz;
620 } else {
621 double dt = _epoTime - _firstEpoTime;
622 if (dt < OPT->_seedingTime) {
623 _QFlt.SymSubMatrix(1, 3) = QFltOld.SymSubMatrix(1, 3);
624 } else {
625 _QFlt.SymSubMatrix(1, 3) = QFltOld.SymSubMatrix(1, 3) + Qxyz;
626 }
627 }
628}
629
630//
631////////////////////////////////////////////////////////////////////////////
632void t_pppFilter::setStateVectorAndVarCovMatrix(const ColumnVector &xFltOld,
633 const SymmetricMatrix &QFltOld) {
634
635 const vector<t_pppParam*> &params = _parlist.params();
636 unsigned nPar = params.size();
637
638 _QFlt.ReSize(nPar);
639 _QFlt = 0.0;
640 _xFlt.ReSize(nPar);
641 _xFlt = 0.0;
642 _x0.ReSize(nPar);
643 _x0 = 0.0;
644
645 for (unsigned ii = 0; ii < nPar; ii++) {
646 t_pppParam *par1 = params[ii];
647 if (QFltOld.size() == 0) {
648 par1->resetIndex();
649 }
650 _x0[ii] = par1->x0();
651 int iOld = par1->indexOld();
652 if (iOld < 0) {
653 _QFlt[ii][ii] = par1->sigma0() * par1->sigma0(); // new parameter
654 } else {
655 _QFlt[ii][ii] = QFltOld[iOld][iOld] + par1->noise() * par1->noise();
656 _xFlt[ii] = xFltOld[iOld];
657 for (unsigned jj = 0; jj < ii; jj++) {
658 t_pppParam *par2 = params[jj];
659 int jOld = par2->indexOld();
660 if (jOld >= 0) {
661 _QFlt[ii][jj] = QFltOld(iOld + 1, jOld + 1);
662 }
663 }
664 }
665 }
666 predictCovCrdPart(QFltOld);
667}
668
669// Compute datum transformation
670////////////////////////////////////////////////////////////////////////////
671t_irc t_pppFilter::datumTransformation(
672 const QMap<char, t_pppRefSat*> &refSatMap) {
673
674 // get last epoch
675 t_pppObsPool::t_epoch *epoch = _obsPool->lastEpoch();
676 if (!epoch) {
677 LOG << "t_pppFilter::datumTransformation: !lastEpoch" << endl;
678 return failure;
679 }
680 _epoTime = epoch->epoTime();
681 LOG.setf(ios::fixed);
682 LOG << string(_epoTime) << " DATUM TRANSFORMATION " << endl;
683
684 vector<t_pppSatObs*> &allObs = epoch->obsVector();
685
686 const QMap<char, t_pppRefSat*> &refSatMapLastEpoch = epoch->refSatMap();
687
688 bool pseudoObsIono = epoch->pseudoObsIono();
689
690 // reset old and set new refSats in last epoch (ambiguities/GIM)
691 // =============================================================
692 if (resetRefSatellitesLastEpoch(allObs, refSatMap, refSatMapLastEpoch)
693 != true) {
694 LOG << "datumTransformation: resetRefSatellitesLastEpoch != success"
695 << endl;
696 return failure;
697 }
698
699 if (OPT->_obsModelType == OPT->UncombPPP) {
700 _obsPool->putEpoch(_epoTime, allObs, pseudoObsIono, refSatMap);
701 return success;
702 }
703 //LOG << "datumTransformation: printParams before set" << endl;
704 //_parlist.printParams(_epoTime);
705
706 // set AA2
707 // =======
708 if (_parlist.set(_epoTime, allObs, refSatMap) != success) {
709 return failure;
710 }
711
712#ifdef BNC_DEBUG_PPP
713 _parlist.printParams(_epoTime);
714#endif
715
716 const QList<char> &usedSystems = _parlist.usedSystems();
717 for (int iSys = 0; iSys < usedSystems.size(); iSys++) {
718 char sys = usedSystems[iSys];
719 t_prn refPrn = refSatMap[sys]->prn();
720 vector<t_pppSatObs*> obsVector;
721 for (unsigned jj = 0; jj < allObs.size(); jj++) {
722 if (allObs[jj]->prn().system() == sys) {
723 allObs[jj]->resetOutlier();
724 obsVector.push_back(allObs[jj]);
725 }
726 }
727 if (iSys == 0) {
728 _datumTrafo->setFirstSystem(sys);
729 }
730 vector<t_lc::type> LCs = OPT->LCs(sys);
731 unsigned usedLCs = LCs.size();
732 if (OPT->_pseudoObsIono && !pseudoObsIono) {
733 usedLCs -= 1; // GIM not used
734 }
735 // max Obs
736 unsigned maxObs = obsVector.size() * usedLCs;
737
738 if (OPT->_pseudoObsIono && pseudoObsIono) {
739 maxObs -= 1; // pseudo obs iono with respect to refSat
740 }
741
742 const vector<t_pppParam*> &params = _parlist.params();
743 unsigned nPar = _parlist.nPar();
744
745 Matrix AA(maxObs, nPar);
746
747 // Real Observations
748 // -----------------
749 int iObs = -1;
750 for (unsigned ii = 0; ii < obsVector.size(); ii++) {
751 t_pppSatObs *obs = obsVector[ii];
752 for (unsigned jj = 0; jj < usedLCs; jj++) {
753 const t_lc::type tLC = LCs[jj];
754 if (tLC == t_lc::GIM) {
755 continue;
756 }
757 ++iObs;
758 for (unsigned iPar = 0; iPar < nPar; iPar++) {
759 const t_pppParam *par = params[iPar];
760 AA[iObs][iPar] = par->partial(_epoTime, obs, tLC, refPrn);
761 }
762 }
763 }
764
765 if (!iObs) {
766 continue;
767 }
768 _datumTrafo->updateIndices(sys, iObs + 1); //LOG << "AA Ncols/Nrows: " << AA.Ncols() << "/" << AA.Nrows() << " nPar: " << nPar << endl; //LOG << "AA.SubMatrix(1 .. " << iObs+1 << " , 1 .. " << nPar << ")" << endl;
769 if (_datumTrafo->prepareAA(AA.SubMatrix(1, iObs + 1, 1, nPar), 2)
770 != success) {
771 return failure;
772 }
773 }
774 _datumTrafo->updateNumObs();
775
776 // Datum Transformation
777 // ====================
778#ifdef BNC_DEBUG_PPP
779 //LOG << "AA1\n"; _datumTrafo->printMatrix(_datumTrafo->AA1(), _datumTrafo->numObs(), _datumTrafo->numPar());
780 //LOG << "AA2\n"; _datumTrafo->printMatrix(_datumTrafo->AA2(), _datumTrafo->numObs(), _datumTrafo->numPar());
781#endif
782 if (_datumTrafo->computeTrafoMatrix() != success) {
783 return failure;
784 }
785#ifdef BNC_DEBUG_PPP
786 //LOG << "D21" << endl; _datumTrafo->printMatrix(_datumTrafo->D21(), _datumTrafo->numObs(), _datumTrafo->numPar());
787#endif
788 ColumnVector xFltOld = _xFlt;
789 SymmetricMatrix QFltOld = _QFlt;
790
791 _QFlt << _datumTrafo->D21() * QFltOld * _datumTrafo->D21().t();
792 _xFlt = _datumTrafo->D21() * xFltOld;
793
794#ifdef BNC_DEBUG_PPP
795 LOG << "xFltOld:\n" << xFltOld << endl;
796 LOG << "xFlt :\n" << _xFlt << endl;
797#endif
798
799 // Reset Ambiguities after Datum Transformation
800 // ============================================
801 for (int iSys = 0; iSys < usedSystems.size(); iSys++) {
802 char sys = usedSystems[iSys];
803 t_prn refPrnOld = refSatMapLastEpoch[sys]->prn();
804 t_prn refPrnNew = refSatMap[sys]->prn();
805 if (refPrnNew != refPrnOld) {
806 resetAmb(refPrnOld, allObs);
807 if (resetAmb(refPrnOld, allObs) == success) {
808 if (OPT->_obsModelType == OPT->DCMcodeBias) {
809 addNoiseToPar(t_pppParam::ion, sys);
810 } else if (OPT->_obsModelType == OPT->DCMphaseBias) {
811 if (sys == 'G') {
812 addNoiseToPar(t_pppParam::pBiasG1, sys);
813 addNoiseToPar(t_pppParam::pBiasG2, sys);
814 } else if (sys == 'R') {
815 addNoiseToPar(t_pppParam::pBiasR1, sys);
816 addNoiseToPar(t_pppParam::pBiasR2, sys);
817 } else if (sys == 'E') {
818 addNoiseToPar(t_pppParam::pBiasE1, sys);
819 addNoiseToPar(t_pppParam::pBiasE2, sys);
820 } else if (sys == 'C') {
821 addNoiseToPar(t_pppParam::pBiasC1, sys);
822 addNoiseToPar(t_pppParam::pBiasC2, sys);
823 }
824 }
825 }
826 }
827 }
828
829 // switch AA2 to AA1
830 // =================
831 _datumTrafo->switchAA();
832
833 _obsPool->putEpoch(_epoTime, allObs, pseudoObsIono, refSatMap);
834
835 return success;
836}
837
838// Init datum transformation
839////////////////////////////////////////////////////////////////////////////
840void t_pppFilter::initDatumTransformation(
841 const std::vector<t_pppSatObs*> &allObs, bool pseudoObsIono) {
842 unsigned trafoObs = 0;
843 const QList<char> &usedSystems = _parlist.usedSystems();
844 for (int iSys = 0; iSys < usedSystems.size(); iSys++) {
845 char sys = usedSystems[iSys];
846 int satNum = 0;
847 for (unsigned jj = 0; jj < allObs.size(); jj++) {
848 if (allObs[jj]->prn().system() == sys) {
849 satNum++;
850 }
851 }
852 // all LCs
853 unsigned realUsedLCs = OPT->LCs(sys).size();
854 // exclude pseudo obs GIM
855 if (OPT->_pseudoObsIono && !pseudoObsIono) {
856 realUsedLCs -= 1;
857 }
858
859 trafoObs += satNum * realUsedLCs;
860
861 if (OPT->_pseudoObsIono && pseudoObsIono) {
862 trafoObs -= 1; // pseudo obs iono with respect to refSat
863 }
864 }
865 _datumTrafo->setNumObs(trafoObs);
866 _datumTrafo->setNumPar(_parlist.nPar());
867 _datumTrafo->initAA();
868}
869
870//
871//////////////////////////////////////////////////////////////////////////////
872bool t_pppFilter::resetRefSatellitesLastEpoch(
873 std::vector<t_pppSatObs*> &obsVector,
874 const QMap<char, t_pppRefSat*> &refSatMap,
875 const QMap<char, t_pppRefSat*> &refSatMapLastEpoch) {
876 bool resetRefSat;
877 // reference satellite definition per system
878 const QList<char> &usedSystems = _parlist.usedSystems();
879 for (int iSys = 0; iSys < usedSystems.size(); iSys++) {
880 resetRefSat = false;
881 char sys = usedSystems[iSys];
882 t_prn newPrn = refSatMap[sys]->prn();
883 t_prn oldPrn = refSatMapLastEpoch[sys]->prn();
884#ifdef BNC_DEBUG_PPP
885 if (oldPrn != newPrn) {
886 LOG << "oldRef: " << oldPrn.toString() << " => newRef " << newPrn.toString() << endl;
887 }
888#endif
889 vector<t_pppSatObs*>::iterator it = obsVector.begin();
890 while (it != obsVector.end()) {
891 t_pppSatObs *satObs = *it;
892 if (satObs->prn() == newPrn) {
893 resetRefSat = true;
894 satObs->setAsReference();
895 } else if (satObs->prn() == oldPrn) {
896 satObs->resetReference();
897 }
898 it++;
899 }
900 if (!resetRefSat) {
901 _obsPool->setRefSatChangeRequired(sys, true);
902 return resetRefSat;
903 }
904 }
905 return resetRefSat;
906}
Note: See TracBrowser for help on using the repository browser.