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Titre : Advances in cartography and GIScience : Selections from the International Cartographic Conference 2017 Type de document : Actes de congrès Auteurs : Michael P. Peterson, Éditeur scientifique Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2017 Collection : Lecture notes in Geoinformation and Cartography Sous-collection : Publications of the International Cartographic Association ICA Conférence : ICC 2017, 28th International Cartographic Conference ICA 02/07/2017 07/07/2017 Washington DC Etats-Unis OA Proceedings of the ICA Importance : 542 p. Format : 15 x 21 cm ISBN/ISSN/EAN : 978-3-319-57335-9 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie
[Termes IGN] analyse numérique
[Termes IGN] calcul d'itinéraire
[Termes IGN] carte interactive
[Termes IGN] cartographie collaborative
[Termes IGN] conception cartographique
[Termes IGN] données localisées des bénévoles
[Termes IGN] géovisualisation
[Termes IGN] navigation pédestre
[Termes IGN] qualité cartographique
[Termes IGN] qualité des données
[Termes IGN] temps réel
[Termes IGN] trafic routierNote de contenu : Part 1 : The Span of Cartography
- Cartographic Memory Preservation of the Petrópolis City in Brazil: Koeler Map Scanning Using Photographic Survey. Manoel do C. Fernandes, Tainá Laeta, Deivison F. dos Santos, Paulo M. L. de Menezes
- Location Spoofing in a Location-Based Game: A Case Study of Pokémon Go. Bo Zhao, Qinying Chen
Part 2 : Crowdsourcing and Data
- Educational Aspects of Crowdsourced Noise Mapping. Andrea Pődör, László Zentai
- Crowd and Community Sourced Data Quality Assessment. Laurence Jolivet, Ana-Maria Olteanu-Raimond
- Crowdsourcing Mapping and Participatory Planning Support System: Case Study of Brno, Czechia. Jiří Pánek, Vít Pászto
- A Framework for Enhancing Real-Time Social Media Data to Improve the Disaster Management Process. Syed Attique Shah, Dursun Zafer Şeker, Hande Demirel
- Building a Real-Time Geo-Targeted Event Observation (Geo) Viewer for Disaster Management and Situation Awareness. Ming-Hsiang Tsou, Chin-Te Jung, Christopher Allen, Jiue-An Yang, Su Yeon Han, Brian H. Spitzberg et al.
- The Academic SDI—Towards Understanding Spatial Data Infrastructures for Research and Education. Serena Coetzee, Stefan Steiniger, Barend Köbben, Adam Iwaniak, Iwona Kaczmarek, Petr Rapant et al.
Part 3 : Map Design
- Introducing Leader Lines into Scale-Aware Consistent Labeling. Hsiang-Yun Wu, Shigeo Takahashi, Sheung-Hung Poon, Masatoshi Arikawa
- On the Way to Create Individualized Cartographic Images for Online Maps Using Free and Open Source Tools. Csaba Szigeti, Gáspár Albert, Virág Ilyés, Dávid Kis, Dávid Várkonyi
- Hebrus Valles—The Mars Exploration Zone Map. Mateusz Pitura
- XY Domain: A Sound Map Artwork for Communicating Big Data Characteristics. Antoni B. Moore, Charlotte Parallel
- Reproducible Cartography. Timothée Giraud, Nicolas Lambert
Part 4 : Evaluating Map Quality
- Effectiveness and Efficiency of Using Different Types of Rectangular Treemap as Diagrams in Cartography. Mengjie Zhou, Yan Cheng, Ning Ye, Jing Tian
- The Usability of a GeoVisual Analytics Environment for the Exploration and Analysis of Different Datasets. Irma Kveladze, Menno-Jan Kraak, Corné P. J. M. van Elzakker
- Characterizing Maps from Visual Properties. Catherine Dominguès, Laurence Jolivet
- How Hard Is It to Design Maps for Beginners, Intermediates and Experts? Gáspár Albert, Virág Ilyés, Csaba Szigeti, Dávid Kis, Dávid Várkonyi
- Interaction Problems Found Through Usability Testing on Interactive Maps. Elaine Gomes Vieira de Jesus, Patricia Lustosa Brito, Vivian de Oliveira Fernandes
- The Apprehension of Overlaid Information in a Web Map. Dzenan Dumpor, Terje Midtbø
- Visualization of Environment-related Information in Augmented Reality: Analysis of User Needs. Kateřina Chmelařová, Čeněk Šašinka, Zdeněk Stachoň
Part 5 : Geographic Analysis
- Analysis and Visualization of the Urban Residents’ Income-Related Happiness Index in China. Ying Song, Yang Yu, Yanfang Liu, Zixi Liu, Qianyi Li, Guoguang Xu
- Displaying Voter Gains and Losses: Local Government Elections in South Africa for 2011 and 2016. Peter M. U. Schmitz
- Mapping Community Vulnerability to Poaching: A Whole-of-Society Approach. Peter M. U. Schmitz, Duarte Gonçalves, Merin Jacobs
- Mapping Urban Landscapes Along Streets Using Google Street View. Xiaojiang Li, Carlo Ratti, Ian Seiferling
Part 6 : Numerical Analysis
- Cross-Scale Analysis of Sub-pixel Variations in Digital Elevation Models. Mehran Ghandehari, Barbara P. Buttenfield, Carson J. Q. Farmer
- Extraction of Ridge Lines from Grid DEMs with the Steepest Ascent Method Based on Constrained Direction. Wenping Jiang, Daping Xi, Xiaolong Deng, Lina Huang, Shen Ying
- Using the A⋆ Algorithm to Find Optimal Sequences for Area Aggregation. Dongliang Peng, Alexander Wolff, Jan-Henrik Haunert
- Quantitative Expressions of Spatial Similarity in Multi-scale Map Spaces. Haowen Yan, Liming Zhang, Zhonghui Wang, Weifang Yang, Tao Liu, Liang Zhou
- Balanced Allocation of Multi-criteria Geographic Areas by a Genetic Algorithm. Shahin Sharifi Noorian, Christian E. Murphy
- Rethinking the Buffering Approach for Assessing OpenStreetMap Positional Accuracy. Qi Zhou
- Data Classification for Highlighting Polygons with Local Extreme Values in Choropleth Maps. Jochen Schiewe
Part 7 : Routing
- A Confidence-Based Approach for the Assessment of Accessibility of Pedestrian Network for Manual Wheelchair Users. Amin Gharebaghi, Mir-Abolfazl Mostafavi, Geoffrey Edwards, Patrick Fougeyrollas, Patrick Morales-Coayla, François Routhier et al.
- Accessibility in Pedestrian Routing. Megen Brittell, Christine Grummon, Amy Lobben, Masrudy Omri, Nicholas Perdue
- Visualization of Traffic Bottlenecks: Combining Traffic Congestion with Complicated Crossings. Andreas Keler, Jukka M. Krisp, Linfang Ding
- Psychogeography in the Age of the Quantified Self—Mental Map Modelling with Georeferenced Personal Activity Data. Sebastian Meier, Katrin Glinka
Part 8 : Final Reflections
- In Search of the Essence of Cartography. Marek Baranowski, Dariusz Gotlib, Robert OlszewskiNuméro de notice : 19871 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Actes En ligne : https://doi.org/10.1007/978-3-319-57336-6 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86071 ContientRéservation
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Code-barres Cote Support Localisation Section Disponibilité 19871-02 CG2017 Livre Centre de documentation Congrès Disponible 19871-01 K325 Livre LASTIG Dépôt en unité Exclu du prêt Ambiguity resolved precise point positioning with GPS and BeiDou / Pan Li in Journal of geodesy, vol 91 n° 1 (January 2017)
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Titre : Ambiguity resolved precise point positioning with GPS and BeiDou Type de document : Article/Communication Auteurs : Pan Li, Auteur ; Xiaohong Zhang, Auteur ; Fei Guo, Auteur Année de publication : 2017 Article en page(s) : pp 25 - 40 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] combinaison au niveau des observations
[Termes IGN] erreur systématique
[Termes IGN] fractional cycle bias
[Termes IGN] positionnement par BeiDou
[Termes IGN] positionnement par GNSS
[Termes IGN] positionnement par GPS
[Termes IGN] positionnement ponctuel précis
[Termes IGN] résolution d'ambiguïté
[Termes IGN] simple différenceRésumé : (Auteur) This paper focuses on the contribution of the global positioning system (GPS) and BeiDou navigation satellite system (BDS) observations to precise point positioning (PPP) ambiguity resolution (AR). A GPS + BDS fractional cycle bias (FCB) estimation method and a PPP AR model were developed using integrated GPS and BDS observations. For FCB estimation, the GPS + BDS combined PPP float solutions of the globally distributed IGS MGEX were first performed. When integrating GPS observations, the BDS ambiguities can be precisely estimated with less than four tracked BDS satellites. The FCBs of both GPS and BDS satellites can then be estimated from these precise ambiguities. For the GPS + BDS combined AR, one GPS and one BDS IGSO or MEO satellite were first chosen as the reference satellite for GPS and BDS, respectively, to form inner-system single-differenced ambiguities. The single-differenced GPS and BDS ambiguities were then fused by partial ambiguity resolution to increase the possibility of fixing a subset of decorrelated ambiguities with high confidence. To verify the correctness of the FCB estimation and the effectiveness of the GPS + BDS PPP AR, data recorded from about 75 IGS MGEX stations during the period of DOY 123-151 (May 3 to May 31) in 2015 were used for validation. Data were processed with three strategies: BDS-only AR, GPS-only AR and GPS + BDS AR. Numerous experimental results show that the time to first fix (TTFF) is longer than 6 h for the BDS AR in general and that the fixing rate is usually less than 35 % for both static and kinematic PPP. An average TTFF of 21.7 min and 33.6 min together with a fixing rate of 98.6 and 97.0 % in static and kinematic PPP, respectively, can be achieved for GPS-only ambiguity fixing. For the combined GPS + BDS AR, the average TTFF can be shortened to 16.9 min and 24.6 min and the fixing rate can be increased to 99.5 and 99.0 % in static and kinematic PPP, respectively. Results also show that GPS + BDS PPP AR outperforms single-system PPP AR in terms of convergence time and position accuracy. Numéro de notice : A2017-059 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-016-0935-4 En ligne : http://dx.doi.org/10.1007/s00190-016-0935-4 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84267
in Journal of geodesy > vol 91 n° 1 (January 2017) . - pp 25 - 40[article]
Titre : Analysing normal modes of the Earth from high-rate GNSS time series Type de document : Mémoire Auteurs : Zhongyi Chen, Auteur Editeur : Stuttgart : University of Stuttgart Année de publication : 2017 Importance : 78 p. Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] déformation de la croute terrestre
[Termes IGN] oscillation
[Termes IGN] positionnement différentiel
[Termes IGN] positionnement ponctuel précis
[Termes IGN] rapport signal sur bruit
[Termes IGN] séisme
[Termes IGN] série temporelleRésumé : (auteur) Normal modes of the Earth, or Earth’s free oscillations, correspond to a global deformation of the Earth that vibrates at different frequencies, like a bell, after a strong excitation, usually an earthquake of magnitude greater than 6.5. Normal modes of the Earth were first described by Lord Kelvin (Kelvin, 1863) with a computation of the lowest fundamental spheroidal mode 0S2 frequency for a homogeneous Earth model (Lognonné and Clévédé, 2002). With the theory and the deployment of the first long-period sensors in the late 1950s, day-scale Earth’s free oscillation after large earthquakes has been detected by underground instruments such as strainmeters, gravimeters and seismometers (Benioff et al., 1961) (Dziewonski and Gilbert, 1972) (Mendiguren, 1973). In the 1960s, since the U.S. military developed the first satellite navigation system, Transit, the era of Global Navigation Satellite System (GNSS) has arrived. Among all navigation satellite systems, Global Positioning System (GPS), operated by the U.S. Department of Defense (DOD), is currently the world’s most utilized satellite navigation system. With the developments of receiver technology and sampling capability, GPS becomes a powerful tool to study long-period Earth deformations such as plate tectonics and post-glacial rebound, or to monitoring short-period and short-duration motion such as waves generated by earthquakes (Bilich et al., 2008). In recent years, several studies have demonstrated the effective use of GPS in estimating coseismic displacement waveforms induced by an earthquake with accuracies ranging from a few millimeters to a few centimeters. In these studies, two well-known processing strategies, single Precise Point Positioning (PPP) and Different Positioning (DP), have been used to reduce the latency between earthquake occurrence and coseimic displacement waveforms estimation. In this thesis, a new approach named Variometric Approach for Displacements Analysis Standalone Engine (VADASE) is used to detect the normal modes of the Earth. Then the Welch’s PSD estimate is applied to transform the time series into frequency domain. Several simulations have been performed on synthetic time series to investigate the influence of noise level, sampling rate, time series length, window size and overlapping rate of Welch’s method, as well as the influence of stacking. The experiments on real data show the capability of VADASE time series for detecting normal modes of the Earth with the help of the stacking method. Some fundamental modes with small amplitude are not visible because the SNR is not sufficient to lift the signal out of the noise. Note de contenu : 1- Normal modes of the Earth
2- GPS system
3- GPS positioning
4- GPS data processing
5- Spectral analysis
6- Simulations
7- Experiments on real Vadase time seriesNuméro de notice : 17576 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Mémoire masters divers DOI : 10.18419/opus-9317 En ligne : http://dx.doi.org/10.18419/opus-9317 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92281 Cartographie et interprétation de l'environnement par drone / Martial Sanfourche in Revue Française de Photogrammétrie et de Télédétection, n° 213 - 214 (janvier - avril 2017)
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Titre : Cartographie et interprétation de l'environnement par drone Type de document : Article/Communication Auteurs : Martial Sanfourche, Auteur ; Bertrand Le Saux, Auteur ; Aurélien Plyer, Auteur ; Guy Le Besnerais, Auteur Année de publication : 2017 Article en page(s) : pp 55 - 62 Note générale : Bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] détection d'objet
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] drone
[Termes IGN] géopositionnement
[Termes IGN] image aérienne
[Termes IGN] information sémantique
[Termes IGN] modélisation géométrique de prise de vue
[Termes IGN] objet mobile
[Termes IGN] sémantisation
[Termes IGN] système de numérisation mobile
[Termes IGN] vidéo numériqueRésumé : (auteur) Nous présentons dans cet article le système de cartographie géométrique et d'interprétation sémantique de l'environnement pour des applications drone développé à l'ONERA/DTIM. Une cartographie précise en 3D de l'environnement survolé par le drone est réalisée au moyen des données vidéo et Lidar acquises en vol. Notre système comprend ensuite un module pour la cartographie sémantique interactive et la détection d'objets génériques dans le modèle global. Enfin nous proposons des fonctionnalités de détection et pistage des objets mobiles et des évènements sur vidéo, qui permettent de localiser les évènements spécifiques sur la carte, et ainsi avoir une vue globale de la situation. Numéro de notice : A2017-047 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/IMAGERIE Nature : Article DOI : 10.52638/rfpt.2017.199 Date de publication en ligne : 26/04/2017 En ligne : https://doi.org/10.52638/rfpt.2017.199 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84225
in Revue Française de Photogrammétrie et de Télédétection > n° 213 - 214 (janvier - avril 2017) . - pp 55 - 62[article]
Titre : Clock measurements to improve the geopotential determination Type de document : Article/Communication Auteurs : Guillaume Lion , Auteur ; Isabelle Panet
, Auteur ; Pacôme Delva, Auteur ; David Coulot
, Auteur ; Peter Wolf, Auteur ; Sébastien Bize, Auteur ; G. Christine, Auteur
Editeur : Munich [Allemagne] : European Geosciences Union EGU Année de publication : 2017 Conférence : EGU 2017, General Assembly 23/04/2017 28/04/2017 Vienne Autriche https://www.egu2017.eu/ Note générale : LE POSTER N'EST PAS ENCORE ACCESSIBLE SUR HAL Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] champ de gravitation
[Termes IGN] géoïde altimétrique
[Termes IGN] horloge optique
[Termes IGN] Massif central (France)
[Termes IGN] méthode des moindres carrés
[Termes IGN] précision centimétrique
[Termes IGN] qualité des donnéesRésumé : (Auteur) Comparisons between optical clocks with an accuracy and stability approaching the 10-18 in term of relative frequency shift are opening new perspectives for the direct determination of geopotential at a centimeter-level accuracy in geoid height. However, so far detailed quantitative estimates of the possible improvement in geoid determination when adding such clock measurements to existing data are lacking. In this context, the present work aims at evaluating the contribution of this new kind of direct measurements in determining the geopotential at high spatial resolution (10 km). We consider the Massif Central area, marked by smooth, moderate altitude mountains and volcanic plateaus leading to variations of the gravitational field over a range of spatial scales. In such type of region, the scarcity of gravity data is an important limitation in deriving accurate high resolution geopotential models. We summarize our methodology to assess the contribution of clock data in the geopotential recovery, in combination with ground gravity measurements. We sample synthetic gravity and disturbing potential data from a spherical harmonics geopotential model, and a topography model, up to 10 km resolution; we also build a potential control grid. From the synthetic data, we estimate the disturbing potential by least-squares collocation. Finally, we assess the quality of the reconstructed potential by comparing it to that of the control grid. We show that adding only a few clock data reduces the reconstruction bias significantly and improves the standard deviation by a factor 3. We discuss the role of different parameters, such as the effect of the data coverage and data quality on these results, the trade-off between the measurement noise level and the number of data, and the optimization of the clock data network. Numéro de notice : C2017-062 Affiliation des auteurs : LASTIG+Ext (2016-2019) Thématique : POSITIONNEMENT Nature : Poster nature-HAL : Poster-sans-CL DOI : sans Date de publication en ligne : 15/07/2022 En ligne : https://hal.science/hal-03724673v1 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=101283 Documents numériques
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Clock measurements ... - posterAdobe Acrobat PDF PermalinkFinding dense locations in symbolic indoor tracking data: modeling, indexing, and processing / Tanvir Ahmed in Geoinformatica, vol 21 n° 1 (January - March 2017)
PermalinkPermalinkGeolocation error tracking of ZY-3 three line cameras / Hongbo Pan in ISPRS Journal of photogrammetry and remote sensing, vol 123 (January 2017)
PermalinkGPS/BDS short-term ISB modelling and prediction / Nan Jiang in GPS solutions, vol 21 n° 1 (January 2017)
PermalinkImplementation of a real-time stacking algorithm in a photogrammetric digital camera for UAVs / Ahmad Audi (2017)
PermalinkPermalinkPermalinkPermalinkLexique GNSS pour le positionnement [Commission GEOPOS, groupe de travail GNSS] / Françoise Duquenne (2017)
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