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GNSS Satellite-Based Augmentation Systems : A potential new time keeping system for future generations / Carlo Cornacchini in Inside GNSS, vol 11 n° 1 (January - February 2016)
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Titre : GNSS Satellite-Based Augmentation Systems : A potential new time keeping system for future generations Type de document : Article/Communication Auteurs : Carlo Cornacchini, Auteur ; Daniele Gianfelici, Auteur ; et al., Auteur Année de publication : 2016 Article en page(s) : pp 54 - 63 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] MTSAT
[Termes IGN] système d'extension
[Termes IGN] système de chronométrage
[Termes IGN] temps réelRésumé : (éditeur) This article describes development and testing of a novel time-keeping system for future architectures of satellite-based augmentation systems. It describes an operational test bed designed to support comparison tests and evaluation of the time-keeping system in light of existing SBAS programs and their requirements. In particular it will address the system design and performance validation of a new time-keeping system for a satellite-based augmentation system (SBAS) and the real-time test bed with which it was evaluated. This time-keeping system could provide increased time-synchronization performance for future upgrades of both the onboard and ground segments of SBAS systems. Numéro de notice : A2016-262 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans En ligne : http://www.insidegnss.com/node/4790 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80795
in Inside GNSS > vol 11 n° 1 (January - February 2016) . - pp 54 - 63[article]Joining spatial distribution visualisation tools with social media data using free and open source software : extended abstract / Mayra Zurbaran (2016)
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contenu dans Proceedings of the 13th International Conference on Location-Based Services, Vienna, 14 - 16 november 2016 / Georg Gartner (2016)
Titre : Joining spatial distribution visualisation tools with social media data using free and open source software : extended abstract Type de document : Article/Communication Auteurs : Mayra Zurbaran, Auteur ; Daniele Oxoli, Auteur ; et al., Auteur Editeur : [s.l.] : [s.n.] Année de publication : 2016 Conférence : LBS 2016, 13th International Conference on Location-Based Services 14/11/2016 16/11/2016 Vienne Autriche Importance : pp 221 - 224 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] données issues des réseaux sociaux
[Termes IGN] données localisées des bénévoles
[Termes IGN] logiciel libre
[Termes IGN] point d'intérêt
[Termes IGN] Python (langage de programmation)
[Termes IGN] visualisation de données
[Termes IGN] WebSIGNuméro de notice : C2016-026 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Communication DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85182 Documents numériques
en open access
Joining spatial distribution visualisation toolsAdobe Acrobat PDFOn the estimability of parameters in undifferenced, uncombined GNSS network and PPP-RTK user models by means of S-system theory / Dennis Odijk in Journal of geodesy, vol 90 n° 1 (January 2016)
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Titre : On the estimability of parameters in undifferenced, uncombined GNSS network and PPP-RTK user models by means of S-system theory Type de document : Article/Communication Auteurs : Dennis Odijk, Auteur ; Baocheng Zhang, Auteur ; Amir Khodabandeh, Auteur ; et al., Auteur Année de publication : 2016 Article en page(s) : pp 15 - 44 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] constellation GNSS
[Termes IGN] positionnement cinématique en temps réel
[Termes IGN] positionnement ponctuel précis
[Termes IGN] temps réel
[Termes IGN] utilisateurRésumé : (auteur) The concept of integer ambiguity resolution-enabled Precise Point Positioning (PPP-RTK) relies on appropriate network information for the parameters that are common between the single-receiver user that applies and the network that provides this information. Most of the current methods for PPP-RTK are based on forming the ionosphere-free combination using dual-frequency Global Navigation Satellite System (GNSS) observations. These methods are therefore restrictive in the light of the development of new multi-frequency GNSS constellations, as well as from the point of view that the PPP-RTK user requires ionospheric corrections to obtain integer ambiguity resolution results based on short observation time spans. The method for PPP-RTK that is presented in this article does not have above limitations as it is based on the undifferenced, uncombined GNSS observation equations, thereby keeping all parameters in the model. Working with the undifferenced observation equations implies that the models are rank-deficient; not all parameters are unbiasedly estimable, but only combinations of them. By application of S-system theory the model is made of full rank by constraining a minimum set of parameters, or S-basis. The choice of this S-basis determines the estimability and the interpretation of the parameters that are transmitted to the PPP-RTK users. As this choice is not unique, one has to be very careful when comparing network solutions in different S-systems; in that case the S-transformation, which is provided by the S-system method, should be used to make the comparison. Knowing the estimability and interpretation of the parameters estimated by the network is shown to be crucial for a correct interpretation of the estimable PPP-RTK user parameters, among others the essential ambiguity parameters, which have the integer property which is clearly following from the interpretation of satellite phase biases from the network. The flexibility of the S-system method is furthermore demonstrated by the fact that all models in this article are derived in multi-epoch mode, allowing to incorporate dynamic model constraints on all or subsets of parameters. Numéro de notice : A2016-022 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-015-0854-9 Date de publication en ligne : 05/11/2015 En ligne : https://doi.org/10.1007/s00190-015-0854-9 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79465
in Journal of geodesy > vol 90 n° 1 (January 2016) . - pp 15 - 44[article]Range-expanding wildlife: modelling the distribution of large mammals in Japan, with management implications / Masayuki U. Saito in International journal of geographical information science IJGIS, vol 30 n° 1-2 (January - February 2016)
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Titre : Range-expanding wildlife: modelling the distribution of large mammals in Japan, with management implications Type de document : Article/Communication Auteurs : Masayuki U. Saito, Auteur ; Hiroshi Momose, Auteur ; Satoshi Inoue, Auteur ; et al., Auteur Année de publication : 2016 Article en page(s) : pp 20 - 35 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] conflit d'usage
[Termes IGN] écotone
[Termes IGN] habitat animal
[Termes IGN] Japon
[Termes IGN] Mammalia
[Termes IGN] modèle de simulation
[Termes IGN] modélisation spatiale
[Termes IGN] répartition géographiqueRésumé : (auteur) The spatial distribution of large mammals has been increasing in industrial nations, often leading to conflicts with humans and significant alteration of natural ecosystems. Species distribution models (SDMs) of the sika deer, Japanese serow, wild boar, Japanese macaque and Asiatic black bear in Japan were constructed to identify the important factors for habitat management. We also projected two scenarios of their future range expansions under a scenario of no change in the variables, and one where the variables change according to a time series. Modelling showed that all species preferred forest and forest/agricultural ecotones. In the best models of the sika deer and wild boar, grasslands (GRASSs) were an important positive factor, while human population density and hunting pressures were negative factors. High human population density was also a negative factor with the Japanese serow and Asiatic black bear. Key environments for the distribution and expansion of large mammals were agricultural areas near forest and GRASSs. Therefore, limiting the access of large mammals to such habitats may contribute to wildlife management. In both scenarios, our projections suggest that the distributions of all species could expand by 2028, resulting in more conflict with humans and significant alterations to natural ecosystems in the future. In order to stop this damaging expansion, habitat management and landscape redesign are important. However, a SDM and future projection include uncertainty. It is necessary to validate the estimates and projections by monitoring the future changes in distribution. Numéro de notice : A2016-085 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2014.952301 En ligne : https://doi.org/10.1080/13658816.2014.952301 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79870
in International journal of geographical information science IJGIS > vol 30 n° 1-2 (January - February 2016) . - pp 20 - 35[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-2016011 RAB Revue Centre de documentation En réserve L003 Disponible Recent variations of supraglacial lakes on the Baltoro Glacier in the central Karakoram Himalaya and its possible teleconnections with the pacific decadal oscillation / Bijeesh Kozhikkodan Veettil in Geocarto international, vol 31 n° 1 - 2 (January - February 2016)
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Titre : Recent variations of supraglacial lakes on the Baltoro Glacier in the central Karakoram Himalaya and its possible teleconnections with the pacific decadal oscillation Type de document : Article/Communication Auteurs : Bijeesh Kozhikkodan Veettil, Auteur ; Nilceia Bianchini, Auteur ; Ulisses Franz Bremer, Auteur ; et al., Auteur Année de publication : 2016 Article en page(s) : pp 109 - 119 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie numérique
[Termes IGN] analyse diachronique
[Termes IGN] El Niño-Southern oscillation
[Termes IGN] glacier
[Termes IGN] Himalaya
[Termes IGN] lac glaciaire
[Termes IGN] Pacifique (océan)Résumé : (Auteur) This study discusses the formation and variations of supraglacial lakes on the Baltoro glacier system in the central Karakoram Himalaya during the last four decades. We mapped supraglacial lakes on the Baltoro Glacier from 1978 to 2014 using Landsat MSS, TM, ETM + and LCDM images. Most of the glacial lakes were formed or expanded during the late 1970s–2008. After 2008, the total number and the area of glacial lakes were found to be lesser compared to previous years. We tried to find any teleconnections exists between the glacial lake changes in this region and the pacific decadal oscillation (PDO), which entered its prolonged warm regime in the late 1970s and again to its cold regime in 2008, based on observational investigation. The decrease in the number and area of the supraglacial lakes after 2008 is hypothesised to be linked with the recent cold phase of PDO. Numéro de notice : A2016-205 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2015.1041565 Date de publication en ligne : 20/05/2015 En ligne : http://www.tandfonline.com/doi/full/10.1080/10106049.2015.1041565 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79867
in Geocarto international > vol 31 n° 1 - 2 (January - February 2016) . - pp 109 - 119[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 059-2016011 RAB Revue Centre de documentation En réserve L003 Disponible Spectral–spatial adaptive sparse representation for hyperspectral image denoising / Ting Lu in IEEE Transactions on geoscience and remote sensing, vol 54 n° 1 (January 2016)
PermalinkStructural integrity verification of cable stayed footbridge based on FEM analyses and geodetic surveying techniques / Vassilis Gikas in Survey review, vol 48 n° 346 (January 2016)
PermalinkThe NKG2008 GPS campaign – final transformation results and a new common Nordic reference frame / P. Häkli in Journal of geodetic science, vol 6 n° 1 (January 2016)
PermalinkTight integration of ambiguity-fixed PPP and INS: model description and initial results / Shuai Liu in GPS solutions, vol 20 n° 1 (January 2016)
PermalinkTowards a system combining SAR and optical Sentinel data to monitor gold mining in the Guiana shield / Mathieu Rahm (2016)
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PermalinkTraitement du signal marégraphique par analyse harmonique pour la détermination d'une référence altimétrique pour l'Algérie / A. Rami in Bulletin des sciences géographiques, n° 30 (2015 - 2016)
PermalinkVegetation classification and biogeography of European floodplain forests and alder carrs / Jan Douda in Applied Vegetation Science, vol 19 n° 1 (January 2016)
Permalink3D leaf water content mapping using terrestrial laser scanner backscatter intensity with radiometric correction / Xi Zhu in ISPRS Journal of photogrammetry and remote sensing, vol 110 (December 2015)
PermalinkAutomated detection of Martian gullies from HiRISE imagery / Wei Li in Photogrammetric Engineering & Remote Sensing, PERS, vol 81 n° 12 (December 2015)
PermalinkA back-propagation neural network-based approach for multi-represented feature matching in update propagation / Yanxia Wang in Transactions in GIS, vol 19 n° 6 (December 2015)
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