Descripteur
Documents disponibles dans cette catégorie (61)
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
MBOC signal options: performance of multiplexed binary offset carrier modulations for modernized GNSS systems / E. Lohan in GPS world, vol 22 n° 6 (June 2011)
[article]
Titre : MBOC signal options: performance of multiplexed binary offset carrier modulations for modernized GNSS systems Type de document : Article/Communication Auteurs : E. Lohan, Auteur ; M. Bhuiyan, Auteur ; H. Hurskainen, Auteur Année de publication : 2011 Article en page(s) : pp 68 - 74 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement du signal
[Termes IGN] Global Navigation Satellite System
[Termes IGN] performance
[Termes IGN] signal Galileo
[Termes IGN] signal GPSRésumé : (Auteur) A candidate for modernized GNSS civil signals in the L1/E1 band was BOC(1,1), a binary-offset-carrier signal with a "split spectrum" that has negligible impact on the existing GPS signals. However, a signal with better acquisition capabilities and improved multipath performance (while still compatible with the existing GPS signals) is a multiplexed BOC modulation, MBOC(6,1,1/11). The MBOC spectrum can be achieved by following one of several different signal-construction paths with some resulting differences in how a receiver tracks the signal and its associated performance. Numéro de notice : A2011-276 Affiliation des auteurs : non IGN Thématique : IMAGERIE/POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31054
in GPS world > vol 22 n° 6 (June 2011) . - pp 68 - 74[article]Réservation
Réserver ce documentExemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 067-2011061 RAB Revue Centre de documentation En réserve L003 Disponible Modernization milestone: the GPS civil monitoring performance specification / T. Nagle in Inside GNSS, vol 5 n° 1 (January - February 2010)
[article]
Titre : Modernization milestone: the GPS civil monitoring performance specification Type de document : Article/Communication Auteurs : T. Nagle, Auteur ; J. Lavrakas, Auteur ; B. Renfro, Auteur Année de publication : 2010 Article en page(s) : 7 p. ; pp 38 - 44 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] performance
[Termes IGN] signal GPS
[Termes IGN] spécification de contenu
[Termes IGN] surveillanceRésumé : (Auteur) In recent years, the U.S. Department of Transportation (DoT) has allocated funds to pay for the civil share of GPS modernization efforts, including the costs of monitoring the civil GPS signals — both legacy signals and those that will be implemented over the next few years. In order to carry out civil monitoring, however, GPS operators needed to have a comprehensive set of performance specifications. Three experts involved in that effort describe the process and results so far. Copyright Gibbons Media & Research LLC Numéro de notice : A2010-617 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33571
in Inside GNSS > vol 5 n° 1 (January - February 2010) . - 7 p. ; pp 38 - 44[article]Réservation
Réserver ce documentExemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 159-2010011 SL Revue Centre de documentation Revues en salle Disponible Documents numériques
peut être téléchargé
Modernization milestone ... - pdf éditeurAdobe Acrobat PDF Naïve Cartography : how intuitions about display configuration can hurt performance / M. Hegarty in Cartographica, vol 44 n° 3 (September 2009)
[article]
Titre : Naïve Cartography : how intuitions about display configuration can hurt performance Type de document : Article/Communication Auteurs : M. Hegarty, Auteur ; H. Smallman, Auteur ; et al., Auteur Année de publication : 2009 Article en page(s) : pp 171 - 186 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] animation graphique
[Termes IGN] communication cartographique
[Termes IGN] conception cartographique
[Termes IGN] désinformation
[Termes IGN] langage cartographique
[Termes IGN] lecture de carte
[Termes IGN] performance
[Termes IGN] qualité cartographique
[Termes IGN] représentation cartographique
[Termes IGN] représentation mentale spatiale
[Termes IGN] visualisation cartographique
[Vedettes matières IGN] CartologieRésumé : (Auteur) Map-making has traditionally been the domain of professional cartographers, but with the advent of interactive display systems, users now have the flexibility to create and configure their own digital maps and other visual displays. This flexibility can be beneficial only if users have good intuitions about which display configurations are effective or ineffective for different tasks. Here we examine people's intuitions about display effectiveness and whether these intuitions match the actual effectiveness of different displays. Surveys of undergraduate students and post-graduate meteorology students reveal that they consistently prefer enhanced displays, especially those that add animation and realism. These naïve intuitions contrast with the principles of cartography, which emphasize the importance of abstracting from the real world to create simple displays that make task-relevant information salient. Both a review of objective studies and a new study presented here support traditional principles of cartography and are inconsistent with naïve intuitions. We interpret these studies in relation to new theoretical notions of users' folk fallacies about how perception works, and derive implications for the design of interactive display systems and education. Copyright University of Toronto Press Numéro de notice : A2009-409 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.3138/carto.44.3.171 Date de publication en ligne : 02/10/2009 En ligne : https://doi.org/10.3138/carto.44.3.171 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30040
in Cartographica > vol 44 n° 3 (September 2009) . - pp 171 - 186[article]Réservation
Réserver ce documentExemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 031-09031 RAB Revue Centre de documentation En réserve L003 Disponible Evaluation of the cartographic communication performance of a route guidance and navigation system / E. Pugliesi in Cartography and Geographic Information Science, vol 36 n° 2 (April 2009)
[article]
Titre : Evaluation of the cartographic communication performance of a route guidance and navigation system Type de document : Article/Communication Auteurs : E. Pugliesi, Auteur ; M. Decanini, Auteur ; V. Tachibana, Auteur Année de publication : 2009 Article en page(s) : pp 193 - 207 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] communication cartographique
[Termes IGN] guidage de véhicules
[Termes IGN] performance
[Vedettes matières IGN] CartologieRésumé : (Auteur) This study evaluates the influence of different cartographic representations of in-car navigation systems on visual demand, subjective preference, and navigational error. It takes into account the type and complexity of the representation, maneuvering complexity, road layout, and driver gender. A group of 28 drivers (14 male and 14 female) participated in this experiment which was performed in a low-cost driving simulator. The tests were performed on a limited number of instances for each type of representation, and their purpose was to carry out a preliminary assessment and provide future avenues for further studies. Data collected for the visual demand study were analyzed using non-parametric statistical analyses. Results confirmed previous research that showed that different levels of design complexity significantly influence visual demand. Non-grid-like road networks, for example, influence significantly visual demand and navigational error. An analysis of simple maneuvers on a grid-like road network showed that static and blinking arrows did not present significant differences. From the set of representations analyzed to assess visual demand, both arrows were equally efficient. From a gender perspective, women seem to look at the display more than men, but this factor was not significant. With respect to subjective preferences, drivers prefer representations with mimetic landmarks when they perform straight-ahead tasks. For maneuvering tasks, landmarks in a perspective model created higher visual demands. Copyright CaGISociety Numéro de notice : A2009-166 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1559/152304009788188745 En ligne : https://doi.org/10.1559/152304009788188745 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29796
in Cartography and Geographic Information Science > vol 36 n° 2 (April 2009) . - pp 193 - 207[article]Réservation
Réserver ce documentExemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 032-09021 RAB Revue Centre de documentation En réserve L003 Disponible The effects of navigation sensors and spatial road network data quality on the performance of map matching algorithms / M. Quddus in Geoinformatica, vol 13 n° 1 (March 2009)
[article]
Titre : The effects of navigation sensors and spatial road network data quality on the performance of map matching algorithms Type de document : Article/Communication Auteurs : M. Quddus, Auteur ; R. Noland, Auteur ; W. Ochieng, Auteur Année de publication : 2009 Article en page(s) : pp 85 - 108 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] appariement de cartes
[Termes IGN] cohérence des données
[Termes IGN] géonavigateur
[Termes IGN] GPS assisté pour la navigation (technologies)
[Termes IGN] milieu urbain
[Termes IGN] performance
[Termes IGN] phase GPS
[Termes IGN] récepteur GPS
[Termes IGN] réseau routierRésumé : (Auteur) Map matching algorithms are utilised to support the navigation module of advanced transport telematics systems. The objective of this paper is to develop a framework to quantify the effects of spatial road network data and navigation sensor data on the performance of map matching algorithms. Three map matching algorithms are tested with different spatial road network data (map scale 1:1,250; 1:2,500 and 1:50,000) and navigation sensor data (global positioning system (GPS) and GPS augmented with deduced reckoning) in order to quantify their performance. The algorithms are applied to different road networks of varying complexity. The performance of the algorithms is then assessed for a suburban road network using high precision positioning data obtained from GPS carrier phase observables. The results show that there are considerable effects of spatial road network data on the performance of map matching algorithms. For an urban road network, the results suggest that both the quality of spatial road network data and the type of navigation system affect the link identification performance of map matching algorithms. Copyright Springer Numéro de notice : A2009-006 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1007/s10707-007-0044-x En ligne : https://doi.org/10.1007/s10707-007-0044-x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29636
in Geoinformatica > vol 13 n° 1 (March 2009) . - pp 85 - 108[article]Réservation
Réserver ce documentExemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 057-09011 RAB Revue Centre de documentation En réserve L003 Disponible New perspectives on the use of GPS and GIS to support a highway performance study / D. Tong in Transactions in GIS, vol 13 n° 1 (February 2009)PermalinkModern radar systems / H. Meikle (2008)PermalinkGPS + LORAN-C: performance analysis of an integrated tracking system / J. Carroll in GPS world, vol 17 n° 7 (July 2006)PermalinkOn the use of dimensioned measures of error to evaluate the performance of spatial interpolators / C.J. Willmot in International journal of geographical information science IJGIS, vol 20 n° 1 (january 2006)PermalinkPrincipes et mise en œuvre de PostGIS (1ère partie) / D. Faivre in Géomatique expert, n° 48 (01/01/2006)PermalinkPermalinkTerra MODIS on-orbit spatial characterization and performance / X. Xiong in IEEE Transactions on geoscience and remote sensing, vol 43 n° 2 (February 2005)PermalinkLandsat-5 bumper-mode geometric correction / J.C. Storey in IEEE Transactions on geoscience and remote sensing, vol 42 n° 12 (December 2004)PermalinkShall 3-D city models be managed in a commercial database? / G. Groger in GIS Geo-Informations-Systeme, vol 2004 n° 9 (September 2004)PermalinkDesign and test of the ground-based L-band radiometer for estimating water in soils (LEWIS) / F. LemaÎtre in IEEE Transactions on geoscience and remote sensing, vol 42 n° 8 (August 2004)Permalink