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A multifrequency polarimetric SAR processing chain to observe oil fields in the Gulf of Mexico / M. Migliaccio in IEEE Transactions on geoscience and remote sensing, vol 49 n° 12 Tome 1 (December 2011)
[article]
Titre : A multifrequency polarimetric SAR processing chain to observe oil fields in the Gulf of Mexico Type de document : Article/Communication Auteurs : M. Migliaccio, Auteur ; Ferdinando Nunziata, Auteur ; A. Montuori, Auteur ; et al., Auteur Année de publication : 2011 Article en page(s) : pp 4729 - 4737 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] image radar moirée
[Termes IGN] marée noire
[Termes IGN] Mexique (golfe du)
[Termes IGN] objet mobile
[Termes IGN] pétrole
[Termes IGN] polarimétrie radar
[Termes IGN] surveillance écologiqueRésumé : (Auteur) Within the National Environmental Satellite, Data, and Information Service, National Oceanic and Atmospheric Administration, multiplatform synthetic aperture radar (SAR) imagery is being used to aid post hurricane and postaccident response efforts in the Gulf of Mexico, such as in the case of the recent Deepwater Horizon oil spill. The main areas of interest related to such disasters are the following: (1) to identify oil pipeline leaks and other oil spills at sea and (2) to detect man-made metallic targets over the sea. Within the context of disaster monitoring and response, an innovative processing chain is proposed to observe oil fields (i.e., oil spills and man-made metallic targets) using both Land C-band full-resolution and fully polarimetric SAR data. The processing chain consists of two steps. The first one, based on the standard deviation of the phase difference between the copolarized channels, allows oil monitoring. The second one, based on the different symmetry properties that characterize man-made metallic targets and natural distributed ones, allows man-made metallic target observation. Experiments, accomplished over single-look complex L-band Advanced Land Observing Satellite (ALOS) Phased Array type L-band Synthetic Aperture Radar (PALSAR) and C-band RADARSAT-2 fully polarimetric SAR data gathered in the Gulf of Mexico and related to the Deepwater Horizon accident, show the effectiveness of the proposed approach. Furthermore, the proposed approach, being able to process both Land C-band fully polarimetric and full resolution SAR measurements, can take full benefit of both the ALOS PALSAR and RADARSAT-2 missions, and therefore, it allows enhancing the revisit time and coverage which are very critical issues in oil field observation. Numéro de notice : A2011-478 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2011.2158828 Date de publication en ligne : 22/12/2011 En ligne : https://doi.org/10.1109/TGRS.2011.2158828 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31372
in IEEE Transactions on geoscience and remote sensing > vol 49 n° 12 Tome 1 (December 2011) . - pp 4729 - 4737[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-2011121A RAB Revue Centre de documentation En réserve L003 Disponible A data model and query language for spatio-temporal decision support / L. Gomez in Geoinformatica, vol 15 n° 3 (July 2011)
[article]
Titre : A data model and query language for spatio-temporal decision support Type de document : Article/Communication Auteurs : L. Gomez, Auteur ; Bart Kuijpers, Auteur ; A. Vaisman, Auteur Année de publication : 2011 Article en page(s) : pp 455 - 496 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] aide à la décision
[Termes IGN] analyse spatio-temporelle
[Termes IGN] base de données spatiotemporelles
[Termes IGN] langage de requête
[Termes IGN] modèle conceptuel de données localisées
[Termes IGN] objet mobile
[Termes IGN] OLAP
[Termes IGN] requête spatiotemporelle
[Termes IGN] SOLAP
[Termes IGN] SQL
[Termes IGN] système d'information géographiqueRésumé : (Auteur) In recent years, applications aimed at exploring and analyzing spatial data have emerged, powered by the increasing need of software that integrates Geographic Information Systems (GIS) and On-Line Analytical Processing (OLAP). These applications have been called SOLAP (Spatial OLAP). In previous work, the authors have introduced Piet, a system based on a formal data model that integrates in a single framework GIS, OLAP (On-Line Analytical Processing), and Moving Object data. Real-world problems are inherently spatio-temporal. Thus, in this paper we present a data model that extends Piet, allowing tracking the history of spatial data in the GIS layers. We present a formal study of the two typical ways of introducing time into Piet: timestamping the thematic layers in the GIS, and timestamping the spatial objects in each layer. We denote these strategies snapshot-based and timestamp-based representations, respectively, following well-known terminology borrowed from temporal databases. We present and discuss the formal model for both alternatives. Based on the timestamp-based representation, we introduce a formal First-Order spatio-temporal query language, which we denote Lt, able to express spatio-temporal queries over GIS, OLAP, and trajectory data. Finally, we discuss implementation issues, the update operators that must be supported by the model, and sketch a temporal extension to Piet-QL, the SQL-like query language that supports Piet. Numéro de notice : A2011-209 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s10707-010-0110-7 Date de publication en ligne : 17/06/2010 En ligne : https://doi.org/10.1007/s10707-010-0110-7 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30987
in Geoinformatica > vol 15 n° 3 (July 2011) . - pp 455 - 496[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 057-2011031 RAB Revue Centre de documentation En réserve L003 Disponible
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Titre : Spatiotemporal pattern queries Type de document : Article/Communication Auteurs : M. Sakr, Auteur ; Ralf Hartmut Güting, Auteur Année de publication : 2011 Article en page(s) : pp 497 - 540 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] base de données spatiotemporelles
[Termes IGN] C++
[Termes IGN] langage de requête
[Termes IGN] module d'extension
[Termes IGN] objet mobile
[Termes IGN] requête spatiotemporelle
[Termes IGN] SQL
[Termes IGN] système de gestion de base de donnéesRésumé : (Auteur) This paper presents a novel approach to express and evaluate the complex class of queries in moving object databases called spatiotemporal pattern queries (STP queries). That is, one can specify temporal order constraints on the fulfillment of several predicates. This is in contrast to a standard spatiotemporal query that is composed of a single predicate. We propose a language design for spatiotemporal pattern queries in the context of spatiotemporal DBMSs. The design builds on the well established concept of lifted predicates. Hence, unlike previous approaches, patterns are neither restricted to specific sets of predicates, nor to specific moving object types. The proposed language can express arbitrarily complex patterns that involve various types of spatiotemporal operations such as range, metric, topological, set operations, aggregations, distance, direction, and boolean operations. This work covers the language integration in SQL, the evaluation of the queries, and the integration with the query optimizer. We also propose a simple language for defining the temporal constraints. The approach allows for queries that were never available. We provide a complete implementation in C++ and Prolog in the context of the Secondo platform. The implementation is made publicly available online as a Secondo Plugin, which also includes automatic scripts for repeating the experiments in this paper. Numéro de notice : A2011-210 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s10707-010-0114-3 Date de publication en ligne : 12/08/2010 En ligne : https://doi.org/10.1007/s10707-010-0114-3 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30988
in Geoinformatica > vol 15 n° 3 (July 2011) . - pp 497 - 540[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 057-2011031 RAB Revue Centre de documentation En réserve L003 Disponible Interpreting motion events of pairs of moving objects / B. Gottfried in Geoinformatica, vol 15 n° 2 (April 2011)
[article]
Titre : Interpreting motion events of pairs of moving objects Type de document : Article/Communication Auteurs : B. Gottfried, Auteur Année de publication : 2011 Article en page(s) : pp 247 - 271 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse spatiale
[Termes IGN] données localisées
[Termes IGN] langage de modélisation
[Termes IGN] objet géographique ponctuel
[Termes IGN] objet mobile
[Termes IGN] raisonnement spatialRésumé : (Auteur) When accumulating large quantities of positional data with ubiquitous positioning techniques, methods are required that can efficiently make use of these data. This work proposes a representation that approximates motion events of pairs of objects. It is shown how the employment of formal grammars enables the interpretation of such motion events. This is accomplished by composing motion patterns into specific qualitative features. In particular, the change of relative directions defines characteristic motion events. Numéro de notice : A2011-086 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s10707-009-0095-2 Date de publication en ligne : 08/10/2009 En ligne : https://doi.org/10.1007/s10707-009-0095-2 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30866
in Geoinformatica > vol 15 n° 2 (April 2011) . - pp 247 - 271[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 057-2011021 RAB Revue Centre de documentation En réserve L003 Disponible An integrated approach for visual analysis of a multisource moving objects knowledge base / N. Wllems in International journal of geographical information science IJGIS, vol 24 n° 10 (october 2010)
[article]
Titre : An integrated approach for visual analysis of a multisource moving objects knowledge base Type de document : Article/Communication Auteurs : N. Wllems, Auteur ; W. Robert, Auteur ; W. Van Hage, Auteur ; G. de Vries, Auteur ; J. Janssens, Auteur ; V. Malaisé, Auteur Année de publication : 2010 Article en page(s) : pp 1543 - 1558 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse visuelle
[Termes IGN] base de connaissances
[Termes IGN] données multisources
[Termes IGN] eaux côtières
[Termes IGN] fusion de données
[Termes IGN] littoral
[Termes IGN] navire
[Termes IGN] objet mobile
[Termes IGN] Pays-Bas
[Termes IGN] sécurité maritime
[Termes IGN] simulation d'étalonnage
[Termes IGN] trafic
[Termes IGN] trajet (mobilité)Résumé : (Auteur) We present an integrated and multidisciplinary approach for analyzing the behavior of moving objects. The results originate from an ongoing research of four different partners from the Dutch Poseidon project (Embedded Systems Institute (2007)), which aims to develop new methods for Maritime Safety and Security (MSS) systems to monitor vessel traffic in coastal areas. Our architecture enables an operator to visually test hypotheses about vessels with time-dependent sensor data and on-demand external knowledge. The system includes the following components: abstraction and simulation of trajectory sensor data, fusion of multiple heterogenous data sources, reasoning, and visual analysis of the combined data sources. We start by extracting segments of consistent movement from simulated or real-world trajectory data, which we store as instances of the Simple Event Model (SEM), an event ontology represented in the Resource Description Framework (RDF). Next, we add data from the web about vessels and geography to enrich the sensor data. This additional information is integrated with the representation of the vessels (actors) and places in SEM. The enriched trajectory data are stored in a knowledge base, which can be further annotated by reasoning and is queried by a visual analytics tool to search for spatiotemporal patterns. Although our approach is dedicated to MSS systems, we expect it to be useful in other domains. Numéro de notice : A2010-465 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658816.2010.515029 En ligne : https://doi.org/10.1080/13658816.2010.515029 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30658
in International journal of geographical information science IJGIS > vol 24 n° 10 (october 2010) . - pp 1543 - 1558[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-2010061 RAB Revue Centre de documentation En réserve L003 Disponible 079-2010062 RAB Revue Centre de documentation En réserve L003 Disponible Anchor uncertainty and space-time prisms on road networks / Bart Kuijpers in International journal of geographical information science IJGIS, vol 24 n°7-8 (july 2010)PermalinkConstrained free space diagrams: a tool for trajectory analysis / Kevin Buchin in International journal of geographical information science IJGIS, vol 24 n°7-8 (july 2010)PermalinkSpatio-temporal trajectory analysis of mobile objects following the same itinerary / Laurent Etienne (26/05/2010)PermalinkAlgorithms for constrained k-nearest neighbor queries over moving object trajectories / Yunjun Gao in Geoinformatica, vol 14 n° 2 (April 2010)PermalinkEfficient evaluation of continuous spatio-temporal queries on moving objects whith uncertain velocity / Y. Huang in Geoinformatica, vol 14 n° 2 (April 2010)PermalinkModèle et langage pour la manipulation de trajectoires spatio-temporelles / D. Zheni Triki in Revue internationale de géomatique, vol 20 n° 1 (mars - mai 2010)PermalinkDévelopper avec les API Google maps / F. Goblet (2010)PermalinkA general framework for using aggregation in visual exploration of movement data / Gennady Adrienko in Cartographic journal (the), vol 47 n° 1 (January 2010)PermalinkEfficient MaxCount and threshold operators of moving objects / S. Anderson in Geoinformatica, vol 13 n° 4 (December 2009)PermalinkUpdate-efficient indexing of moving objects in road networks / J. Chen in Geoinformatica, vol 13 n° 4 (December 2009)Permalink