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Automatic GPS ionospheric amplitude and phase scintillation detectors using a machine learning algorithm / Yu Jiao in Inside GNSS, vol 12 n° 3 (May - June 2017)
[article]
Titre : Automatic GPS ionospheric amplitude and phase scintillation detectors using a machine learning algorithm Type de document : Article/Communication Auteurs : Yu Jiao, Auteur ; John J. Hall, Auteur ; Yu T. Morton, Auteur Année de publication : 2017 Article en page(s) : pp 48 - 54 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement du signal
[Termes IGN] amplitude
[Termes IGN] apprentissage automatique
[Termes IGN] détecteur
[Termes IGN] propagation ionosphérique
[Termes IGN] scintillationRésumé : (auteur) Ionospheric scintillation can cause errors or outage in GNSS services. Timely detection of ionospheric scintillation will enable adaptive processing to mitigate its effects on navigation solutions. This article presents a machine learning algorithm to autonomously detect ionospheric amplitude and phase scintillation. Systematic validations of the algorithm show the accuracies of amplitude and phase scintillation detections to be at around 98% and 92%, respectively. Tests were also conducted using data from locations not involved in training process and the results demonstrate the generalization capabilities of the scintillation detectors. In addition, concurrent amplitude and phase scintillation detection using similar machine learning algorithms is further investigated with low-latitude scintillation data. Our findings suggest that at low latitudes, amplitude detector alone is sufficient to capture scintillation in general. At high latitudes, phase scintillation is known to be the dominating phenomena and phase scintillation detector is necessary to capture the scintillation events. Numéro de notice : A2017-259 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans En ligne : http://www.insidegnss.com/node/5467 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85276
in Inside GNSS > vol 12 n° 3 (May - June 2017) . - pp 48 - 54[article]Codeless code tracking of the Galileo E1 PRS / Cillian O'Driscoll in Inside GNSS, vol 12 n° 2 (March - April 2017)
[article]
Titre : Codeless code tracking of the Galileo E1 PRS Type de document : Article/Communication Auteurs : Cillian O'Driscoll, Auteur ; James T. Curran, Auteur Année de publication : 2017 Article en page(s) : pp 60 - 68 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement du signal
[Termes IGN] anti-leurrage
[Termes IGN] qualité du signal
[Termes IGN] signal GalileoRésumé : (auteur) Code/subcarrier divergence in high order BOC signals is investigated on the Galileo E1 PRS signal. The authors introduce “codeless code tracking” as a potential means for future quality monitoring or as the basis for a high-accuracy PRS-based anti-spoofing mechanism. Numéro de notice : A2017-257 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans En ligne : http://www.insidegnss.com/node/5401 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85273
in Inside GNSS > vol 12 n° 2 (March - April 2017) . - pp 60 - 68[article]Reflected blessings : position estimation using non-line-of-sight GPS signals / Yuting Ng in GPS world, vol 28 n° 3 (March 2017)
[article]
Titre : Reflected blessings : position estimation using non-line-of-sight GPS signals Type de document : Article/Communication Auteurs : Yuting Ng, Auteur ; Grace Xingxin Gao, Auteur Année de publication : 2017 Article en page(s) : pp 42 - 47 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement du signal
[Termes IGN] estimation de position
[Termes IGN] signal GPS
[Termes IGN] trajet multipleRésumé : (Auteur) Building obstructions and reflections present serious challenges to GPS receivers operating in urban environments. In such environments, buildings may obstruct GPS signals, leading to reduced GPS signal availability. In addition, buildings may reflect GPS signals, resulting in reception of nonline- of-sight (NLOS) signals. NLOS GPS signals are delayed versions of the line-of-sight (LOS) signals. As such, they lead to pseudorange errors, resulting in positioning errors. Conventional approaches treat NLOS GPS signals as unwanted interference to be rejected or mitigated. Numéro de notice : A2017-291 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85326
in GPS world > vol 28 n° 3 (March 2017) . - pp 42 - 47[article]Interference localization from space: part 2 applications / Luca Canzian in Inside GNSS, vol 12 n° 1 (January - February 2017)
[article]
Titre : Interference localization from space: part 2 applications Type de document : Article/Communication Auteurs : Luca Canzian, Auteur ; Stefano Ciccotosto, Auteur ; Samuele Fantinato, Auteur ; et al., Auteur Année de publication : 2017 Article en page(s) : pp 56 - 67 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement du signal
[Termes IGN] brouillage
[Termes IGN] détection automatique
[Termes IGN] géolocalisation
[Termes IGN] interférence
[Termes IGN] leurrageRésumé : (auteur) Detrimental effects of RF interference costs the GNSS industry millions of dollars each year. Among the various strategies adopted to address the problem, interference localization is becoming a priority because it provides authorities with the location of the interference sources and time of the interference events. In turn, this enables them to take appropriate actions to deal with such interference sources and prevent them from re-appearing. This second in a series of articles on interference localization discusses the practical aspects associated with single-interferer localization approaches. It describes two different types of localization architectures, ground-based and space-based, discussing simulation results for each and showing the performance that such architectures can achieve in specific scenarios. Numéro de notice : A2017-256 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans En ligne : http://www.insidegnss.com/node/5305 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85271
in Inside GNSS > vol 12 n° 1 (January - February 2017) . - pp 56 - 67[article]Optimal Doppler-aided smoothing strategy for GNSS navigation / Zebo Zhou in GPS solutions, vol 21 n° 1 (January 2017)
[article]
Titre : Optimal Doppler-aided smoothing strategy for GNSS navigation Type de document : Article/Communication Auteurs : Zebo Zhou, Auteur ; Bofeng Li, Auteur Année de publication : 2017 Article en page(s) : pp 197 - 210 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement du signal
[Termes IGN] code GNSS
[Termes IGN] données Doppler
[Termes IGN] glissement de cycle
[Termes IGN] onde porteuse
[Termes IGN] phaseRésumé : (Auteur) Carrier-phase-smoothed code (CPSC), i.e., smoothing of the code using carrier phases, has widely been used to reduce the code noise in GNSS applications. However, the efficiency of CPSC suffers significantly from cycle slips, interruptions and jitters. The GNSS Doppler, as an instantaneous measurement, is robust and immune to cycle slips and proven useful in GNSS-challenged environments. We develop optimal Doppler-smoothed code based on the principle of minimum variance using the Hatch filter for two typical applications, which are called pure Doppler-smoothed code (PDSC) and continued Doppler-smoothed code. PDSC results from smoothing the code using only Doppler, whereas in case of continued Doppler-smoothed code, the smoothing continues using Doppler once the carrier phase becomes unavailable. Furthermore, in order to refine the Doppler-smoothed code model, a balance factor is introduced for adjusting the contributions of raw code and Doppler measurements to the smoothed code in case the Doppler noise is relatively large. Finally, experiments are carried out to demonstrate the performance of the theory, which verifies its validity and efficiency. Numéro de notice : A2017-016 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1007/s10291-015-0512-y Date de publication en ligne : 20/01/2016 En ligne : https://doi.org/10.1007/s10291-015-0512-y Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83947
in GPS solutions > vol 21 n° 1 (January 2017) . - pp 197 - 210[article]A drift line bias estimator: ARMA-based filter or calibration method, and its application in BDS/GPS-based attitude determination / Zhang Liang in Journal of geodesy, vol 90 n° 12 (December 2016)PermalinkInterference localization from space: theoretical background / Luca Canzian in Inside GNSS, vol 11 n° 6 (November - December 2016)PermalinkSMAP L-Band microwave radiometer: RFI mitigation prelaunch analysis and first year on-orbit observations / Priscilla N. Mohammed in IEEE Transactions on geoscience and remote sensing, vol 54 n° 10 (October 2016)PermalinkGNSS interferometric radio occultation / Manuel Martín-Neira in IEEE Transactions on geoscience and remote sensing, vol 54 n° 9 (September 2016)PermalinkInterference mitigation in the E5A Galileo band using an open-source simulator / Diego Alonso in Inside GNSS, vol 11 n° 4 (July - August 2016)PermalinkBand-limited signal reconstruction from irregular samples with variable apertures / David G. Long in IEEE Transactions on geoscience and remote sensing, vol 54 n° 4 (April 2016)PermalinkNull-steering antennas: Assessing the performance of multi-antenna interference-rejection techniques / James T. Curran in GPS world, vol 27 n° 2 (February 2016)PermalinkPermalinkA fast and accurate algorithm for high-frequency trans-ionospheric path length determination / Dudy D Wijaya in Journal of geodesy, vol 89 n° 12 (december 2015)PermalinkHigh-latitude ionospheric irregularity drift velocity estimation using spaced GPS receiver carrier phase time–frequency analysis / Jun Wang in IEEE Transactions on geoscience and remote sensing, vol 53 n° 11 (November 2015)PermalinkGetting There by Tuning In: Using HD Radio Signals for Navigation / Ananta Vidyarthi in GPS world, vol 26 n° 9 (September 2015)PermalinkThe Fresnel–Fizeau effect and the atmospheric time delay in geodetic VLBI / S. M. Kopeikin in Journal of geodesy, vol 89 n° 8 (August 2015)PermalinkNetwork-based estimation of time-dependent noise in GPS position time series / Ksenia Dimitrieva in Journal of geodesy, vol 89 n° 6 (June 2015)PermalinkDouble phase estimator : Towards a new perception of the subcarrier component / Daniele Borio in Inside GNSS, vol 10 n° 3 (May - June 2015)PermalinkEliminating diffraction effects during multi-frequency correction in global navigation satellite systems / M.V. Tinin in Journal of geodesy, vol 89 n° 5 (May 2015)PermalinkIrregular variations in GPS time series by probability and noise analysis / Anna Klos in Survey review, vol 47 n° 342 (May 2015)PermalinkGeostatistical estimation of signal-to-noise ratios for spectral vegetation indices / L. Ji in ISPRS Journal of photogrammetry and remote sensing, vol 96 (October 2014)Permalink3-Pol polarimetric weather measurements with agile-beam phased-array radars / Verónica Santalla del Rio in IEEE Transactions on geoscience and remote sensing, vol 52 n° 9 Tome 2 (September 2014)PermalinkVoxel-optimized regional water vapor tomography and comparison with radiosonde and numerical weather model / Biyan Chen in Journal of geodesy, vol 88 n° 7 (July 2014)PermalinkOptical signal processor for millimeter-wave interferometric radiometry / Enrique Nova in IEEE Transactions on geoscience and remote sensing, vol 52 n° 5 tome 1 (May 2014)PermalinkImpact of signal contamination on the adaptive detection performance of local hyperspectral anomalies / Stefania Matteoli in IEEE Transactions on geoscience and remote sensing, vol 52 n° 4 (April 2014)PermalinkEffects of atmospheric stability and wind fetch on microwave sea echoes / Yunhua Wang in IEEE Transactions on geoscience and remote sensing, vol 52 n° 2 (February 2014)PermalinkIonospheric modeling using GPS: Greater fidelity using a 3D approach / Wei Zhang in GPS world, vol 25 n° 2 (February 2014)PermalinkPermalinkHunting for GNSS echoes: analysis of signal tracking techniques for multipath mitigation / Antonio Fernandez in GPS world, vol 24 n° 11 (November 2013)PermalinkA technique for routinely updating the ITU-R database using radio occultation electron density profiles / Claudio Brunini in Journal of geodesy, vol 87 n° 9 (September 2013)PermalinkSparse representation of GPR traces with application to signal classification / Wenbin Shao in IEEE Transactions on geoscience and remote sensing, vol 51 n° 7 Tome 1 (July 2013)PermalinkIonospheric scintillations: How irregularities in electron density perturb satellite navigation systems / Satellite-based augmentation system ionospheric working group in GPS world, vol 23 n° 4 (April 2012)PermalinkPersonal privacy jammers: Locating Jersey PPDs jamming GBAS [Ground-Based Augmentation System] safety-of-life signals / J. Grabowski in GPS world, vol 23 n° 4 (April 2012)PermalinkComparison of ray-tracing packages for troposphere delays / V. Nafisi in IEEE Transactions on geoscience and remote sensing, vol 50 n° 2 (February 2012)PermalinkGNSS antennas and humans: a study of their interactions / J. Bancroft in GPS world, vol 23 n° 2 (February 2012)PermalinkPatch antennas for the new GNSS: better reception in a changing world / G. Panther in GPS world, vol 23 n° 2 (February 2012)PermalinkInterference & Einstein: GNSS update / Huibert-Jan Lekkerkerk in Geoinformatics, vol 15 n° 1 (01/01/2012)PermalinkKnow your enemy: signal characteristics of civil GPS jammers / R. Mitch in GPS world, vol 23 n° 1 (January 2012)PermalinkStraight talk on anti-spoofing: securing the future of PNT / K. Wesson in GPS world, vol 23 n° 1 (January 2012)PermalinkSpace-time equalization techniques for new GNSS signals / P. Anantharamu in GPS world, vol 22 n° 10 (October 2011)PermalinkInterpolating atmospheric water vapor delay by incorporating terrain elevation information / B. Xu in Journal of geodesy, vol 85 n° 9 (September 2011)Permalinkvol 85 n° 7 - July 2011 - CONT08 -continuous geodetic VLBI campaign 2008 August 12-26 2008 (Bulletin de Journal of geodesy) / Axel NothnagelPermalinkMultipath minimization method: mitigation through adaptive filtering for machine automation applications / L. Serrano in GPS world, vol 22 n° 7 (July 2011)PermalinkMBOC signal options: performance of multiplexed binary offset carrier modulations for modernized GNSS systems / E. Lohan in GPS world, vol 22 n° 6 (June 2011)PermalinkThe civilian battlefield protecting GNSS receivers from interference and jamming / M. Jones in Inside GNSS, vol 6 n° 2 (March - April 2011)PermalinkWavelets and notch filtering: innovative techniques for mitigating RF interference / M. Paonni in Inside GNSS, vol 6 n° 1 (January - February 2011)PermalinkEstimation of phase center corrections for GLONASS-M satellite antennas / F. Dilssner in Journal of geodesy, vol 84 n° 8 (August 2010)PermalinkA first look at the effects of ionospheric signal bending on a globally processed GPS network / E. Petrie in Journal of geodesy, vol 84 n° 8 (August 2010)PermalinkMathématiques pour le traitement du signal / M. Bergounioux (2010)Permalink