Descripteur
Documents disponibles dans cette catégorie (716)
Ajouter le résultat dans votre panier
Visionner les documents numériques
Affiner la recherche Interroger des sources externes
Etendre la recherche sur niveau(x) vers le bas
Positional accuracy control in dense urban environment with low-cost receiver and multi-constellation GNSS / Yann Méneroux (2017)
Titre : Positional accuracy control in dense urban environment with low-cost receiver and multi-constellation GNSS Type de document : Article/Communication Auteurs : Yann Méneroux , Auteur ; Dinesh Manandhar, Auteur ; Saurav Ranjit, Auteur ; Guillaume Saint Pierre, Auteur ; Ryosuke Shibasaki, Auteur Editeur : Saint-Mandé : Institut national de l'information géographique et forestière - IGN (2012-) Année de publication : 2017 Projets : 1-Pas de projet / Conférence : MGA 2017, 9th Multi-GNSS Asia Conference 09/10/2017 11/10/2017 Jakarta Indonésie Importance : 5 p. Note générale : bibliographie
références https://hal.archives-ouvertes.fr/hal-02193751Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] constellation
[Termes IGN] constellation BeiDou
[Termes IGN] constellation GLONASS
[Termes IGN] positionnement par GNSS
[Termes IGN] précision décimétrique
[Termes IGN] RTKLIBRésumé : (auteur) In this work, we investigate the effectiveness of a method leveraging multi-GNSS positioning with low-cost receiver to control the accuracy of a set of predefined points with short time acquisition and reduced sky view factor. Final accuracy is required to be sub-meter level. 20 positions located in Tokyo (Japan) have been observed for 6 minutes with a u-blox NEO M8T receiver and a L1-band antenna. Solutions have been computed with the free software RTKlib, for different combinations of satellite constellations. Eventually, we derived a probabilistic upper bound on the controlled points root mean square error (rmse) based on Rayleigh distribution and the central limit theorem. Results highlighted that completing GPS with one additional constellation may markedly reduce the predicted rmse as well as the convergence time. The gain in accuracy has been found to be more moderated when a maximal number of constellations is added, despite solution is reached much faster. We shall notice however that these findings may be dependent upon the selected mask angle for the computation. Some further analysis is also required to assess more precisely the respective contributions of GLONASS and Beidou systems in the overall enhancement. Numéro de notice : C2017-056 Affiliation des auteurs : LASTIG+Ext (2016-2019) Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComSansActesPubliés-Unpublished DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97092 Documents numériques
peut être téléchargé
Positional accuracy control ... - pdf auteurAdobe Acrobat PDF 2017: The Year of Galileo / Paul Verhoef in GPS world, Vol 27 n° 12 (December 2016)
[article]
Titre : 2017: The Year of Galileo Type de document : Article/Communication Auteurs : Paul Verhoef, Auteur Année de publication : 2016 Article en page(s) : pp 20-21, 27 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] constellation Galileo
[Termes IGN] GalileoRésumé : (auteur) [introduction] I write at an especially exciting moment for the Galileo satellite navigation system, as two flagship European programmes combine for the very first time. Mid-November will see the very first Galileo launch using an Ariane 5 launcher from Europe’s Spaceport in French Guiana, in place of the Soyuz that has served the constellation up until now. Four instead of two Galileo satellites will be launched at a time: The number of satellites girding the globe will rise at a single stroke from 14 to 18. Meanwhile the European Union is set to declare Galileo operational for initial services at the end of this where it can finally start serving users. Numéro de notice : A2016-899 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83335
in GPS world > Vol 27 n° 12 (December 2016) . - pp 20-21, 27[article]Galileo deals four of a kind / Anonyme in GPS world, Vol 27 n° 12 (December 2016)
[article]
Titre : Galileo deals four of a kind Type de document : Article/Communication Auteurs : Anonyme, Auteur Année de publication : 2016 Article en page(s) : pp 12 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] constellation GalileoRésumé : (documentaliste) Les derniers lancements de la constellation Galileo, qui sera opérationnel en 2020, et la valeur de la fusée Ariane, sont présentés dans cette brève. Numéro de notice : A2016-859 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83334
in GPS world > Vol 27 n° 12 (December 2016) . - pp 12[article]Improved ambiguity resolution for URTK with dynamic atmosphere constraints / Weiming Tang in Journal of geodesy, vol 90 n° 12 (December 2016)
[article]
Titre : Improved ambiguity resolution for URTK with dynamic atmosphere constraints Type de document : Article/Communication Auteurs : Weiming Tang, Auteur ; Wenjian Liu, Auteur ; Xuan Zou, Auteur ; et al., Auteur Année de publication : 2016 Article en page(s) : pp 1359 - 1369 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] correction ionosphérique
[Termes IGN] effet atmosphérique
[Termes IGN] positionnement cinématique en temps réel
[Termes IGN] précision du positionnement
[Termes IGN] résidu
[Termes IGN] résolution d'ambiguïtéRésumé : (Auteur) Raw observation processing method with prior knowledge of ionospheric delay could strengthen the ambiguity resolution (AR), but it does not make full use of the relatively longer wavelength of wide-lane (WL) observation. Furthermore, the accuracy of calculated atmospheric delays from the regional augmentation information has quite different in quality, while the atmospheric constraint used in the current methods is usually set to an empirical value. A proper constraint, which matches the accuracy of calculated atmospheric delays, can most effectively compensate the residual systematic biases caused by large inter-station distances. Therefore, the standard deviation of the residual atmospheric parameters should be fine-tuned. This paper presents an atmosphere-constrained AR method for undifferenced network RTK (URTK) rover, whose ambiguities are sequentially fixed according to their wavelengths. Furthermore, this research systematically analyzes the residual atmospheric error and finds that it mainly varies along the positional relationship between the rover and the chosen reference stations. More importantly, its ionospheric part of certain location will also be cyclically influenced every day. Therefore, the standard deviation of residual ionospheric error can be modeled by a daily repeated cosine or other functions with the help of data one day before, and applied by rovers as pseudo-observation. With the data collected at 29 stations from a continuously operating reference station network in Guangdong Province (GDCORS) in China, the efficiency of the proposed approach is confirmed by improving the success and error rates of AR for 10-20 % compared to that of the WL-L1-IF one, as well as making much better positioning accuracy. Numéro de notice : A2016-807 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-016-0928-3 En ligne : http://dx.doi.org/10.1007/s00190-016-0928-3 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=82595
in Journal of geodesy > vol 90 n° 12 (December 2016) . - pp 1359 - 1369[article]Precision GNSS for everyone: Precise positioning using raw GPS measurements from android smartphones / Simon Banville in GPS world, Vol 27 n° 11 (November 2016)
[article]
Titre : Precision GNSS for everyone: Precise positioning using raw GPS measurements from android smartphones Type de document : Article/Communication Auteurs : Simon Banville, Auteur ; Franck Van Diggelen, Auteur Année de publication : 2016 Article en page(s) : pp 43 - 48 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] Androïd
[Termes IGN] positionnement par GPS
[Termes IGN] précision du positionnement
[Termes IGN] téléphone intelligentRésumé : (éditeur) In this month’s column, we take a look at some initial efforts to independently process smartphone measurements. How good are the results?. Numéro de notice : A2016-775 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=82466
in GPS world > Vol 27 n° 11 (November 2016) . - pp 43 - 48[article]Single-frequency, dual-GNSS versus dual-frequency, single-GNSS: a low-cost and high-grade receivers GPS-BDS RTK analysis / Robert Odolinski in Journal of geodesy, vol 90 n° 11 (November 2016)PermalinkA statistical characterization of the Galileo-to-GPS inter-system bias / Ciro Gioia in Journal of geodesy, vol 90 n° 11 (November 2016)PermalinkBetter GNSS navigation and spoofing detection with chip scale-atomic clocks / Thomas Krawinkel in GPS world, vol 27 n° 10 (October 2016)PermalinkCentimeter positioning for UAVs and mass-market applications / Cécile Mongrédien in GPS world, vol 27 n° 10 (October 2016)PermalinkA new ZTD model based on permanent ground-based GNSS-ZTD data / M. Ding in Survey review, vol 48 n° 351 (October 2016)PermalinkA better location in Europe / Reinhard Blasi in GEO: Geoconnexion international, vol 15 n° 8 (September 2016)PermalinkPPP-RTK and inter-system biases: the ISB look-up table as a means to support multi-system PPP-RTK / Amir Khodabandeh in Journal of geodesy, vol 90 n° 9 (September 2016)PermalinkA remark on the GNSS single difference model with common clock scheme for attitude determination / Wantong Chen in Journal of applied geodesy, vol 10 n° 3 (September 2016)PermalinkUse of the gyrotheodolite in underground networks of long high-speed railway tunnels / J. Velasco-Gómez, in Survey review, vol 48 n° 350 (September 2016)PermalinkVariance components estimation of residual errors in GPS precise positioning / Darko Anđić in Geodetski vestnik, vol 60 n° 3 (September - November 2016)Permalink