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Accuracy and reliability of multi-GNSS real-time precise positioning: GPS, GLONASS, BeiDou, and Galileo / Xinging Li in Journal of geodesy, vol 89 n° 6 (June 2015)
[article]
Titre : Accuracy and reliability of multi-GNSS real-time precise positioning: GPS, GLONASS, BeiDou, and Galileo Type de document : Article/Communication Auteurs : Xinging Li, Auteur ; Maorong Ge, Auteur ; Xiaolei Dai, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 607-635 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] fiabilité des données
[Termes IGN] orbitographie
[Termes IGN] positionnement par GNSS
[Termes IGN] positionnement ponctuel précis
[Termes IGN] précision du positionnement
[Termes IGN] signal BeiDou
[Termes IGN] signal Galileo
[Termes IGN] signal GLONASS
[Termes IGN] signal GPS
[Termes IGN] temps réelRésumé : (auteur) In this contribution, we present a GPS+GLONASS+BeiDou+Galileo four-system model to fully exploit the observations of all these four navigation satellite systems for real-time precise orbit determination, clock estimation and positioning. A rigorous multi-GNSS analysis is performed to achieve the best possible consistency by processing the observations from different GNSS together in one common parameter estimation procedure. Meanwhile, an efficient multi-GNSS real-time precise positioning service system is designed and demonstrated by using the multi-GNSS Experiment, BeiDou Experimental Tracking Network, and International GNSS Service networks including stations all over the world. The statistical analysis of the 6-h predicted orbits show that the radial and cross root mean square (RMS) values are smaller than 10 cm for BeiDou and Galileo, and smaller than 5 cm for both GLONASS and GPS satellites, respectively. The RMS values of the clock differences between real-time and batch-processed solutions for GPS satellites are about 0.10 ns, while the RMS values for BeiDou, Galileo and GLONASS are 0.13, 0.13 and 0.14 ns, respectively. The addition of the BeiDou, Galileo and GLONASS systems to the standard GPS-only processing, reduces the convergence time almost by 70 %, while the positioning accuracy is improved by about 25 %. Some outliers in the GPS-only solutions vanish when multi-GNSS observations are processed simultaneous. The availability and reliability of GPS precise positioning decrease dramatically as the elevation cutoff increases. However, the accuracy of multi-GNSS precise point positioning (PPP) is hardly decreased and few centimeter are still achievable in the horizontal components even with 40∘ elevation cutoff. At 30∘ and 40∘ elevation cutoffs, the availability rates of GPS-only solution drop significantly to only around 70 and 40 %, respectively. However, multi-GNSS PPP can provide precise position estimates continuously (availability rate is more than 99.5 %) even up to 40∘ elevation cutoff (e.g., in urban canyons). Numéro de notice : A2015-352 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-015-0802-8 Date de publication en ligne : 14/03/2015 En ligne : https://doi.org/10.1007/s00190-015-0802-8 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76760
in Journal of geodesy > vol 89 n° 6 (June 2015) . - pp 607-635[article]Contribution de l'Institut National de l'Information Géographique et Forestière à la réalisation du repère de référence terrestre de GALILEO / Jonathan Chenal in XYZ, n° 143 (juin - août 2015)
[article]
Titre : Contribution de l'Institut National de l'Information Géographique et Forestière à la réalisation du repère de référence terrestre de GALILEO Type de document : Article/Communication Auteurs : Jonathan Chenal , Auteur ; Zuheir Altamimi , Auteur Année de publication : 2015 Article en page(s) : pp 37 - 39 Note générale : Bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] co-positionnement
[Termes IGN] cohérence des données
[Termes IGN] données Galileo
[Termes IGN] Galileo Geodetic Service Provider
[Termes IGN] Galileo Terrestrial Reference Frame
[Termes IGN] Institut national de l'information géographique et forestière (France)
[Termes IGN] International Terrestrial Reference Frame
[Termes IGN] station permanenteRésumé : (Auteur) L’Institut National de l’Information Géographique et Forestière (IGN) participe depuis près de 10 ans au consortium GGSP (GALILEO Geodetic Service Provider) chargé de fournir le repère de référence terrestre du système européen GALILEO (GALILEO Terrestrial Reference Frame – GTRF). Celui-ci est spécifié pour que les positions des stations communes du GTRF avec le Repère International de Référence Terrestre (ITRF) soient cohérentes à hauteur de 3 cm. Trois centres d’analyse calculent chaque jour et chaque semaine les positions d’environ 150 stations à la surface de la Terre, dont une quarantaine de Stations de Suivi de GALILEO (GALILEO Sensor Station – GSS). L’IGN est en charge de leur combinaison et de l’alignement de la solution ainsi combinée sur l’ITRF. L’analyse et le cumul rigoureux des solutions hebdomadaires fournissent le GTRF proprement dit, qui est composé de position de stations et de leurs vitesses linéaires. Les résultats montrent que la cohérence entre les deux repères atteint 5 mm au niveau des coordonnées de leurs stations communes. Numéro de notice : A2015-446 Affiliation des auteurs : LASTIG LAREG (2012-mi2018) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77086
in XYZ > n° 143 (juin - août 2015) . - pp 37 - 39[article]Réservation
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A2015-446.pdfAdobe Acrobat PDF Estimating the short-term stability of in-orbit GNSS clocks : Following launch on GEO/GSO satellites / Dhaval Upadhyay in Inside GNSS, vol 10 n° 3 (May - June 2015)
[article]
Titre : Estimating the short-term stability of in-orbit GNSS clocks : Following launch on GEO/GSO satellites Type de document : Article/Communication Auteurs : Dhaval Upadhyay, Auteur ; Kriti Khatri, Auteur ; et al., Auteur Année de publication : 2015 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] éphémérides de satellite
[Termes IGN] horloge atomique
[Termes IGN] orbite géostationnaireRésumé : (éditeur) An engineering team proposes a method for determining the time of atomic clocks onboard satellites in geosynchronous and geostationary orbits when precise ephemeris data from ground monitoring stations are unavailable during initial checkout following launch. Numéro de notice : A2015-252 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans En ligne : http://www.insidegnss.com/node/4503 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76296
in Inside GNSS > vol 10 n° 3 (May - June 2015)[article]Analysis of orbital configurations for geocenter determination with GPS and low-Earth orbiters / Da Kuang in Journal of geodesy, vol 89 n° 5 (May 2015)
[article]
Titre : Analysis of orbital configurations for geocenter determination with GPS and low-Earth orbiters Type de document : Article/Communication Auteurs : Da Kuang, Auteur ; Yoaz E. Bar-Sever, Auteur ; Bruce J. Haines, Auteur Année de publication : 2015 Article en page(s) : pp 471 - 481 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] analyse comparative
[Termes IGN] antenne GPS
[Termes IGN] double différence
[Termes IGN] géocentre
[Termes IGN] hauteur ellipsoïdale
[Termes IGN] orbite basse
[Termes IGN] orbitographie par GNSS
[Termes IGN] poursuite de satellite
[Termes IGN] récepteur GPS
[Termes IGN] télémétrie laser sur satelliteRésumé : (auteur) We use a series of simulated scenarios to characterize the observability of geocenter location with GPS tracking data. We examine in particular the improvement realized when a GPS receiver in low Earth orbit (LEO) augments the ground network. Various orbital configurations for the LEO are considered and the observability of geocenter location based on GPS tracking is compared to that based on satellite laser ranging (SLR). The distance between a satellite and a ground tracking-site is the primary measurement, and Earth rotation plays important role in determining the geocenter location. Compared to SLR, which directly and unambiguously measures this distance, terrestrial GPS observations provide a weaker (relative) measurement for geocenter location determination. The estimation of GPS transmitter and receiver clock errors, which is equivalent to double differencing four simultaneous range measurements, removes much of this absolute distance information. We show that when ground GPS tracking data are augmented with precise measurements from a GPS receiver onboard a LEO satellite, the sensitivity of the data to geocenter location increases by more than a factor of two for Z-component. The geometric diversity underlying the varying baselines between the LEO and ground stations promotes improved global observability, and renders the GPS technique comparable to SLR in terms of information content for geocenter location determination. We assess a variety of LEO orbital configurations, including the proposed orbit for the geodetic reference antenna in space mission concept. The results suggest that a retrograde LEO with altitude near 3,000 km is favorable for geocenter determination. Numéro de notice : A2015-347 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-015-0792-6 Date de publication en ligne : 08/02/2015 En ligne : https://doi.org/10.1007/s00190-015-0792-6 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76721
in Journal of geodesy > vol 89 n° 5 (May 2015) . - pp 471 - 481[article]Ionospheric effects in uncalibrated phase delay estimation and ambiguity-fixed PPP based on raw observable model / Shengfeng Gu in Journal of geodesy, vol 89 n° 5 (May 2015)
[article]
Titre : Ionospheric effects in uncalibrated phase delay estimation and ambiguity-fixed PPP based on raw observable model Type de document : Article/Communication Auteurs : Shengfeng Gu, Auteur ; Chuang Shi, Auteur ; Yidong Lou, Auteur ; Jingnan Liu, Auteur Année de publication : 2015 Article en page(s) : pp 447 - 457 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] correction ionosphérique
[Termes IGN] modèle ionosphérique
[Termes IGN] positionnement cinématique en temps réel
[Termes IGN] positionnement ponctuel précis
[Termes IGN] propagation ionosphérique
[Termes IGN] résolution d'ambiguïté
[Termes IGN] retard ionosphèrique
[Termes IGN] signal GNSS
[Termes IGN] teneur totale en électronsRésumé : (auteur) Zero-difference (ZD) ambiguity resolution (AR) reveals the potential to further improve the performance of precise point positioning (PPP). Traditionally, PPP AR is achieved by Melbourne–Wübbena and ionosphere-free combinations in which the ionosphere effect are removed. To exploit the ionosphere characteristics, PPP AR with L1 and L2 raw observable has also been developed recently. In this study, we apply this new approach in uncalibrated phase delay (UPD) generation and ZD AR and compare it with the traditional model. The raw observable processing strategy treats each ionosphere delay as an unknown parameter. In this manner, both a priori ionosphere correction model and its spatio-temporal correlation can be employed as constraints to improve the ambiguity resolution. However, theoretical analysis indicates that for the wide-lane (WL) UPD retrieved from L1/L2 ambiguities to benefit from this raw observable approach, high precision ionosphere correction of better than 0.7 total electron content unit (TECU) is essential. This conclusion is then confirmed with over 1 year data collected at about 360 stations. Firstly, both global and regional ionosphere model were generated and evaluated, the results of which demonstrated that, for large-scale ionosphere modeling, only an accuracy of 3.9 TECU can be achieved on average for the vertical delays, and this accuracy can be improved to about 0.64 TECU when dense network is involved. Based on these ionosphere products, WL/narrow-lane (NL) UPDs are then extracted with the raw observable model. The NL ambiguity reveals a better stability and consistency compared to traditional approach. Nonetheless, the WL ambiguity can be hardly improved even constrained with the high spatio-temporal resolution ionospheric corrections. By applying both these approaches in PPP-RTK, it is interesting to find that the traditional model is more efficient in AR as evidenced by the shorter time to first fix, while the three-dimensional positioning accuracy of the RAW model outperforms the combination model by about 7.9%. This reveals that, with the current ionosphere models, there is actually no optimal strategy for the dual-frequency ZD ambiguity resolution, and the combination approach and raw approach each has merits and demerits. Numéro de notice : A2015-345 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-015-0789-1 Date de publication en ligne : 15/02/2015 En ligne : https://doi.org/10.1007/s00190-015-0789-1 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76717
in Journal of geodesy > vol 89 n° 5 (May 2015) . - pp 447 - 457[article]A Galileo IOV assessment: measurement and position domain / Ciro Gioia in GPS solutions, vol 19 n° 2 (April 2015)PermalinkAn alternative ionospheric correction model for global navigation satellite systems / M.M. Hoque in Journal of geodesy, vol 89 n° 4 (April 2015)PermalinkGalileo E1 and E5a Performance for multi-frequency, multi-constellation GBAS / Mihaela-Simona Circiu in GPS world, vol 26 n° 4 (April 2015)Permalinkvol 26 n° 4 - April 2015 - Galileo E1, E5A performance (Bulletin de GPS world)PermalinkEstimating ionospheric delay using GPS/Galileo signals in the E5 band / Olivier Julien in Inside GNSS, vol 10 n° 2 (March - April 2015)PermalinkHow does a GNSS receiver estimate velocity? / Salvatore Gaglione in Inside GNSS, vol 10 n° 2 (March - April 2015)PermalinkImpact of the atmospheric drag on Starlette, Stella, Ajisai, and Lares Orbits / Krzysztof Sosnica in Artificial satellites, vol 50 n° 1 (March 2015)PermalinkAssessing and mitigating the effects of the ionospheric variability on DGPS / Duojie Weng in GPS solutions, vol 19 n° 1 (January 2015)PermalinkExtending the reach of SBAS : Some aspects of EGNOS performance in Ukraine / Valeriy Konin in Inside GNSS, vol 10 n° 1 (January - February 2015)PermalinkFrom Data Schemes to Supersonic Codes : GNSS Authentication for Modernized Signals / Oscar Pozzobon in Inside GNSS, vol 10 n° 1 (January - February 2015)PermalinkGenerating statistically robust multipath stacking maps using congruent cells / Thomas Fuhrmann in GPS solutions, vol 19 n° 1 (January 2015)PermalinkThe carrier-multipath observable: a new carrier-phase multipath mitigation technique / Ramin Moradi in GPS solutions, vol 19 n° 1 (January 2015)PermalinkAccounting for Galileo–GPS inter-system biases in precise satellite positioning / Jacek Paziewski in Journal of geodesy, vol 89 n° 1 (January 2015)PermalinkDetermination of precise satellite orbits and geodetic parameters using satellite laser ranging / Krzysztof Sosnica (2015)PermalinkFirst Galileo FOC satellite on the air: Will be employable for surveying, precise positionning, and geodesy / Peter Steingenberger in GPS world, vol 26 n° 1 (January 2015)PermalinkGlobal geodetic observatories / Claude Boucher in Advances in space research, vol 55 n° 1 ([01/01/2015])PermalinkPermalinkGPS for land surveyors / Jan Van Sickle (2015)PermalinkGPS satellite surveying / Alfred Leick (2015)PermalinkPermalinkPermalinkPermalinkPermalinkPermalinkPermalinkPermalinkA Realistic and Easy-to-Implement Weighting Model for GPS Phase Observations / Xiaoguang Luo in IEEE Transactions on geoscience and remote sensing, vol 52 n° 10 tome 1 (October 2014)Permalinkvol 25 n° 9 - September 2014 (Bulletin de GPS world)PermalinkIGS-MGEX, on prépare le terrain pour les sciences et techniques GNSS multi-constellation / Oliver Montenbruck in XYZ, n° 140 (septembre - novembre 2014)Permalinkvol 25 n° 8 - August 2014 (Bulletin de GPS world)Permalinkvol 25 n° 7 - July 2014 (Bulletin de GPS world)PermalinkContinental hydrology loading observed by VLBI measurements / David Eriksson in Journal of geodesy, vol 88 n° 7 (July 2014)Permalinkvol 25 n° 6 - June 2014 (Bulletin de GPS world)PermalinkLimnimétrie par réflectométrie GNSS à faible coût / Eduardo Rodrigues in XYZ, n° 139 (juin - août 2014)PermalinkSurcharges océaniques dans les signaux GPS : la quète de l'extrêmement petit / Christine Heimlich in XYZ, n° 139 (juin - août 2014)PermalinkThe European way: Performance of the Galileo single-frequency ionospheric correction during in-orbit validation / Roberto Prieto-Cerdeira in GPS world, vol 25 n° 6 (June 2014)Permalinkvol 25 n° 5 - May 2014 (Bulletin de GPS world)PermalinkApplication of SWACI products as ionospheric correction for single-point positioning: a comparative study / David Minkwitz in Journal of geodesy, vol 88 n° 5 (May 2014)PermalinkEarth orientation parameters estimated from VLBI during the CONT11 campaign / Tobias Nilsson in Journal of geodesy, vol 88 n° 5 (May 2014)PermalinkGeneralized integer aperture estimation for partial GNSS ambiguity fixing / Andreas Brack in Journal of geodesy, vol 88 n° 5 (May 2014)Permalinkvol 25 n° 4 - April 2014 (Bulletin de GPS world)PermalinkExpert advice: Common standards for GPS workflows / Mike Botts in GPS world, vol 25 n° 4 (April 2014)Permalinkvol 25 n° 3 - March 2014 (Bulletin de GPS world)PermalinkAlgerian augmentation positioning system (SAAP) / Hassen Abdellaoui in Bulletin des sciences géographiques, n° 29 (janvier - juin 2014)PermalinkAnalyse des séries temporelles de coordonnées des sites multi-techniques (SLR, VLBI, DORIS et GPS) / Bachir Gourine in Bulletin des sciences géographiques, n° 29 (janvier - juin 2014)PermalinkPermalinkvol 25 n° 2 - February 2014 (Bulletin de GPS world)PermalinkA better place / Jane Khodos in GEO: Geoconnexion international, vol 13 n° 2 (february 2014)PermalinkPermalinkvol 25 n° 1 - January 2014 (Bulletin de GPS world)PermalinkPermalinkPermalinkA collinearity diagnosis of the GNSS geocenter determination / Paul Rebischung in Journal of geodesy, vol 88 n° 1 (January 2014)PermalinkCycle slips: Detection and correction using inertial aiding / Malek O. Karaim in GPS world, vol 25 n° 1 (January 2014)PermalinkDORIS tropospheric estimation at IGN : Current strategies, GPS intercomparisons and perspectives / Pascal Willis (2014)PermalinkEtude de l'impact d'un modèle de surcharges sur les résultats obtenus par télémétrie laser sur satellites / Goulven Tallec (2014)PermalinkPermalinkPermalinkPermalinkPermalinkNon-linear station motions in epoch and multi-year reference frames / Mathis Blossfeld in Journal of geodesy, vol 88 n° 1 (January 2014)PermalinkQuad-Constellation Receiver: GPS, GLONASS, Galileo, BeiDou / Philip G. Mattos in GPS world, vol 25 n° 1 (January 2014)PermalinkPermalinkQuantifying the correlation between the MEI and LOD variations by decomposing LOD with singular spectrum analysis / Karine Le Bail (2014)PermalinkRecherche des sous-réseaux d’antennes VLBI et de radio‐sources extra‐galactiques par algorithmes génétiques / Serge Nyoka (2014)PermalinkResolution on the nomenclature of space geodetic reference points and local tie measurements / Sten Bergstrand (nov 2014)Permalinkvol 24 n° 12 - December 2013 (Bulletin de GPS world)Permalinkvol 24 n° 11 - November 2013 (Bulletin de GPS world)PermalinkIntegrated navigation: GPS/BeiDou/INS performance in two hemispheres / Yong Li in Inside GNSS, vol 8 n° 6 (November - December 2013)PermalinkNew structure for GLONASS nav message / Alexander Povalyaev in GPS world, vol 24 n° 11 (November 2013)PermalinkReal-time GNSS activities at ESA: navigation support office provides services for IGS and users / Werner Enderle in GPS world, vol 24 n° 11 (November 2013)Permalinkvol 24 n° 10 - October 2013 (Bulletin de GPS world)Permalinkvol 24 n° 9 - September 2013 (Bulletin de GPS world)PermalinkMéthodes de travail dans les réseaux GNSS : 5e partie, le positionnement cinématique post-traité suivant les méthodes “NPPK” et “PPK pivot libre” / Romain Legros in XYZ, n° 136 (septembre - novembre 2013)PermalinkPermalinkLe système de DORIS et certaines améliorations récentes / Jordane Strittmatter in XYZ, n° 136 (septembre - novembre 2013)Permalinkvol 24 n° 8 - August 2013 (Bulletin de GPS world)PermalinkAutomated and continual determination of radio telescope reference points with sub-mm accuracy: results from a campaign at the Onsala Space Observatory / Michael Lösler in Journal of geodesy, vol 87 n° 8 (August 2013)PermalinkCalibration of the clock-phase biases of GNSS networks: the closure-ambiguity approach / A. Lannes in Journal of geodesy, vol 87 n° 8 (August 2013)Permalinkvol 24 n° 7 - July 2013 (Bulletin de GPS world)PermalinkMapping GPS positional errors using spatial linear mixed models / A.F. Militino in Journal of geodesy, vol 87 n° 7 (July 2013)Permalinkvol 24 n° 6 - June 2013 (Bulletin de GPS world)PermalinkAmbiguity resolution for triple-frequency geometry-free and ionosphere-free combination tested with real data / K. Wang in Journal of geodesy, vol 87 n° 6 (June 2013)PermalinkAssessment of correct fixing rate for precise point positioning ambiguity resolution on a global scale / Xiaohong Zhang in Journal of geodesy, vol 87 n° 6 (June 2013)PermalinkCombination of modeled short-term angular momentum function forecasts from atmosphere, ocean, and hydrology with 90-day EOP predictions / Robert Dill in Journal of geodesy, vol 87 n° 6 (June 2013)PermalinkGNSS spoofing detection: Correlating carrier phase with rapid antenna motion / Mark Psiaki in GPS world, vol 24 n° 6 (June 2013)PermalinkImpact of seasonal station motions on VLBI UT1 intensives results / Zinovy Malkin in Journal of geodesy, vol 87 n° 6 (June 2013)PermalinkMéthodes de travail dans les réseaux GNSS. 4ème partie, Le positionnement cinématique temps-réel suivant les méthodes "NRTK" et "RTK pivot libre" / Romain Legros in XYZ, n° 135 (juin - août 2013)Permalinkvol 24 n° 5 - May 2013 (Bulletin de GPS world)PermalinkGenerating distorded GNSS signals using a signal simulator / Mathieu Raimondi in GPS world, vol 24 n° 5 (May 2013)PermalinkInitial results of precise orbit and clock determination for COMPASS navigation satellite system / Qile Zhao in Journal of geodesy, vol 87 n° 5 (May 2013)PermalinkA method for improving uncalibrated phase delay estimation and ambiguity-fixing in real-time precise point positioning / Xinging Li in Journal of geodesy, vol 87 n° 5 (May 2013)PermalinkStochastic modeling of high-stability ground clocks in GPS analysis / Kang Wang in Journal of geodesy, vol 87 n° 5 (May 2013)PermalinkTriple-frequency GPS precise point positioning with rapid ambiguity resolution / Jianghui Geng in Journal of geodesy, vol 87 n° 5 (May 2013)Permalinkvol 24 n° 4 - April 2013 (Bulletin de GPS world)Permalink