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Titre : Questions de mesure Type de document : Article/Communication Auteurs : Françoise de Blomac, Auteur Année de publication : 2015 Article en page(s) : pp 8 - 9 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] changement climatique
[Termes IGN] données localisées
[Termes IGN] météorologie
[Termes IGN] positionnement par GPS
[Termes IGN] satellite météorologiqueRésumé : (auteur) Voilà bien longtemps que les hommes observent le temps qu'il fait et essayent de deviner le temps qu'il fera. De ces premières mesures sont nées les licences du climat, qui analysent les échanges atmosphériques dans une perspective plus large. Aujourd'hui la Terre est sous haute surveillance et les données affluent pour tenter de comprendre pourquoi et comment évolue le climat. Toutes les informations produites ont une composante géographique. Numéro de notice : A2015-728 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78403
in DécryptaGéo le mag > n° 171 (novembre 2015) . - pp 8 - 9[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 286-2015091 RAB Revue Centre de documentation En réserve L003 Disponible A temporal-contextual analysis of urban dynamics using location-based data / A. Yair Grinberger in International journal of geographical information science IJGIS, vol 29 n° 11 (November 2015)
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[article]
Titre : A temporal-contextual analysis of urban dynamics using location-based data Type de document : Article/Communication Auteurs : A. Yair Grinberger, Auteur ; Noam Shoval, Auteur Année de publication : 2015 Article en page(s) : pp 1969 - 1987 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse spatio-temporelle
[Termes IGN] dynamique spatiale
[Termes IGN] enrichissement sémantique
[Termes IGN] information sémantique
[Termes IGN] itinéraire
[Termes IGN] Jérusalem
[Termes IGN] mobilité urbaine
[Termes IGN] modèle numérique de déplacement
[Termes IGN] positionnement par GPS
[Termes IGN] prise en compte du contexte
[Termes IGN] trace numérique
[Termes IGN] zone urbaineRésumé : (Auteur) The dynamics of urban activities in Jerusalem were studied by analyzing a large-scale semantically rich movement dataset. The semantic enrichment process was based on coupling movement trajectories sampled by GPS loggers with contextual data derived from trajectory-based digital activity dairies. Although the utility of such procedures in generating trajectory-specific semantic data was noted before, their application stays limited. In this paper, we promote the utilization of these procedures by demonstrating that they are not only feasible but also important for mobility studies. We discuss the characteristics of the semantic enrichment process and the manner by which it was applied within the large-scale analysis of urban dynamics. This application uncovered a time- and context-dependent array of centers in Jerusalem, resulting in a semantically rich characterization of urban dynamics. Such characterization provides otherwise unobtainable insights crucial for urban analysis. Wider implications for movement studies may be derived, as this application demonstrates how diary-based enrichment approaches hold the potential to advance bridging the semantic gap in mobility research. Numéro de notice : A2015-615 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/URBANISME Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2015.1049951 En ligne : https://doi.org/10.1080/13658816.2015.1049951 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78082
in International journal of geographical information science IJGIS > vol 29 n° 11 (November 2015) . - pp 1969 - 1987[article]UAV real-time: Data use in a lightweight direct georeferencing system / Christian Eling in GPS world, vol 26 n° 11 (November 2015)
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[article]
Titre : UAV real-time: Data use in a lightweight direct georeferencing system Type de document : Article/Communication Auteurs : Christian Eling, Auteur ; Lasse Klingbeil, Auteur ; Markus Wieland, Auteur ; Erik Heinz, Auteur ; Heiner Kuhlmann, Auteur Année de publication : 2015 Article en page(s) : pp 44 - 55 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] drone
[Termes IGN] géoréférencement direct
[Termes IGN] GPS en mode cinématique
[Termes IGN] GPS-INS
[Termes IGN] magnétomètre
[Termes IGN] positionnement cinématique en temps réel
[Termes IGN] trajectographie par GPSRésumé : (auteur) Direct georeferencing with onboard sensors is less time-consuming for data processing than indirect georeferencing using ground control points, and can supply real-time navigation capability to a UAV. This is very useful for surveying, precision farming or infrastructure inspection. An onboard system for position and attitude determination of lightweight UAVs weighs 240 grams and produces position accuracies better than 5 centimeters and attitude accuracies better than 1 degree. Numéro de notice : A2015--087 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans En ligne : http://gpsworld.com/uav-real-time-data-use-in-a-lightweight-direct-georeferencin [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84804
in GPS world > vol 26 n° 11 (November 2015) . - pp 44 - 55[article]BeiDou phase bias estimation and its application in precise point positioning with triple-frequency observable / Shengfeng Gu in Journal of geodesy, vol 89 n° 10 (october 2015)
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[article]
Titre : BeiDou phase bias estimation and its application in precise point positioning with triple-frequency observable Type de document : Article/Communication Auteurs : Shengfeng Gu, Auteur ; Yidong Lou, Auteur ; Chuang Shi, Auteur ; Jingnan Liu, Auteur Année de publication : 2015 Article en page(s) : pp 979 - 992 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] BeiDou
[Termes IGN] positionnement par BeiDou
[Termes IGN] positionnement ponctuel précis
[Termes IGN] résolution d'ambiguïté
[Vedettes matières IGN] Traitement de données GNSSRésumé : (auteur) At present, the BeiDou system (BDS) enables the practical application of triple-frequency observable in the Asia-Pacific region, of many possible benefits from the additional signal; this study focuses on exploiting the contribution of zero difference (ZD) ambiguity resolution (AR) to the precise point positioning (PPP). A general modeling strategy for multi-frequency PPP AR is presented, in which, the least squares ambiguity decorrelation adjustment (LAMBDA) method is employed in ambiguity fixing based on the full variance-covariance ambiguity matrix generated from the raw data processing model. Because of the reliable fixing of BDS L1 ambiguity faces more difficulty, the LAMBDA method with partial ambiguity fixing is proposed to enable the independent and instantaneous resolution of extra wide-lane (EWL) and wide-lane (WL). This mechanism of sequential ambiguity fixing is demonstrated for resolving ZD satellite phase bias and performing triple-frequency PPP AR with two reference station networks with a typical baseline of up to 400 and 800 km, respectively. Tests show that about 90% of the EWL and WL phase bias of BDS has a consistency of better than 0.1 cycle, and this value decreases to Numéro de notice : A2015-879 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-015-0827-z Date de publication en ligne : 23/06/2015 En ligne : https://doi.org/10.1007/s00190-015-0827-z Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79411
in Journal of geodesy > vol 89 n° 10 (october 2015) . - pp 979 - 992[article]Defining a framework for integration of geospatial technologies for emergency management / V. Bhanumurthy in Geocarto international, vol 30 n° 9 - 10 (October - November 2015)
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[article]
Titre : Defining a framework for integration of geospatial technologies for emergency management Type de document : Article/Communication Auteurs : V. Bhanumurthy, Auteur ; G. Jai Shankar, Auteur ; K. Ram Mohan Rao, Auteur ; P. V. Nagamani, Auteur Année de publication : 2015 Article en page(s) : pp 963 - 983 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] aide à la décision
[Termes IGN] données localisées numériques
[Termes IGN] gestion de crise
[Termes IGN] image satellite
[Termes IGN] intégration de données
[Termes IGN] positionnement par GPS
[Termes IGN] secours d'urgence
[Termes IGN] système d'information géographiqueRésumé : (Auteur) Geospatial technologies are emerging as one of the most promising environments for development of emergency management framework. Geospatial technologies such as Remote Sensing, Geographic Information Systems and Global Positioning Systems integrated with valuable near/real-time field information can provide a comprehensive platform for emergency management. Satellite imagery, vector database, Location Based Services and ancillary data having the relevant attribute information with access and query tools helps the disaster manager to analyse the required information for relief operations. However, the conceptual design of the database, integration procedures, development of decision support functions and dissemination of information integrating real-time information from the field are very important issues in development framework for emergency management. There are some technological challenges in the emergency response for deriving the required outputs such as damage assessment, evacuation planning, situation monitoring, information dissemination, and coordination of resource and logistic planning. This article provides a framework for the integration of various multi-disciplinary technologies for addressing emergency management. Numéro de notice : A2015-626 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2015.1004132 Date de publication en ligne : 06/03/2015 En ligne : http://www.tandfonline.com/doi/full/10.1080/10106049.2015.1004132 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78109
in Geocarto international > vol 30 n° 9 - 10 (October - November 2015) . - pp 963 - 983[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 059-2015051 RAB Revue Centre de documentation En réserve L003 Disponible Estimating the yaw-attitude of an BDS IGSO and MEO satellites / Xiaolei Dai in Journal of geodesy, vol 89 n° 10 (october 2015)
PermalinkFrom GPS and virtual globes to spatial computing - 2020 / Shashi Shekhar in Geoinformatica, vol 19 n° 4 (October - December 2015)
PermalinkInstantaneous ambiguity resolution for URTK and its seamless transition with PPP-AR / Xuan Zou in GPS solutions, vol 19 n° 4 (october 2015)
PermalinkMultiangle BSAR imaging based on BeiDou-2 navigation satellite system: experiments and preliminary results / Tao Zeng in IEEE Transactions on geoscience and remote sensing, vol 53 n° 10 (October 2015)
PermalinkSELF: Semantically Enriched Line simpliFication / Emmanuel Stefanakis in International journal of geographical information science IJGIS, vol 29 n° 10 (October 2015)
PermalinkTightly coupled integration of GPS precise point positioning and MEMS-based inertial systems / Mahmoud Abd Rabbou in GPS solutions, vol 19 n° 4 (october 2015)
PermalinkPermalinkGetting There by Tuning In: Using HD Radio Signals for Navigation / Ananta Vidyarthi in GPS world, vol 26 n° 9 (September 2015)
PermalinkSimulating the effects of quasar structure on parameters from geodetic VLBI / Stanislav S. Shabala in Journal of geodesy, vol 89 n° 9 (september 2015)
PermalinkSnow depth estimation based on multipath phase combination of GPS triple-frequency signals / Kegen Yu in IEEE Transactions on geoscience and remote sensing, vol 53 n° 9 (September 2015)
PermalinkTowards the production of digital terrain models from volunteered GPS trajectories / I. Massad in Survey review, vol 47 n° 344 (September 2015)
PermalinkImpacts of real-time satellite clock errors on GPS precise point positioning-based troposphere zenith delay estimation / Junbo Shi in Journal of geodesy, vol 89 n° 8 (August 2015)
PermalinkThe status of measurement of the Mediterranean mean dynamic topography by geodetic techniques / Philip L. Woodworth in Journal of geodesy, vol 89 n° 8 (August 2015)
PermalinkA worldwide ionospheric model for fast precise point positioning / Adria Rovira-Garcia in IEEE Transactions on geoscience and remote sensing, vol 53 n° 8 (August 2015)
PermalinkGBAS ionospheric threat model assessment for category I operation in the Korean region / Minchan Kim in GPS solutions, vol 19 n° 3 (July 2015)
PermalinkReduction of PPP convergence period through pseudorange multipath and noise mitigation / Garrett Seepersad in GPS solutions, vol 19 n° 3 (July 2015)
PermalinkUsing ionospheric corrections from the space-based augmentation systems for low earth orbiting satellites / Jeongrae Kim in GPS solutions, vol 19 n° 3 (July 2015)
PermalinkAsynchronous RTK precise DGNSS positioning method for deriving a low-latency high-rate output / Zhang Liang in Journal of geodesy, vol 89 n° 7 (July 2015)
PermalinkLocation matters for Europe / Donna Reay in GEO: Geoconnexion international, vol 14 n° 7 (July 2015)
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