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Simulating GPS signals / A. Brown in GPS world, vol 23 n° 5 (May 2012)

Public [article]  inGPS world > vol 23 n° 5 (May 2012) . - pp 44 - 50 Titre : Simulating GPS signals Type de document : Article/Communication Auteurs : A. Brown, Auteur ; J. Redd, Auteur ; M.A. Hutton, Auteur Année de publication : 2012 Article en page(s) : pp 44 - 50 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement [Termes IGN] signal GNSS [Termes IGN] signal GPS [Termes IGN] simulation de signal Résumé : (Editeur) GNSS signal simulators can be expensive and beyond the limited budgets of many researchers. In this month’s column, we look at one company’s approach to providing GNSS signal simulation at a low cost — one that virtually any researcher can afford. Numéro de notice : A2012-239 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31685 [article]

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Rule-based classification of multi-temporal satellite imagery for habitat and agricultural land cover mapping / Robert Lucas in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 3 (August 2007)  

Public [article]  inISPRS Journal of photogrammetry and remote sensing > vol 62 n° 3 (August 2007) . - pp 165 - 185 Titre : Rule-based classification of multi-temporal satellite imagery for habitat and agricultural land cover mapping Type de document : Article/Communication Auteurs : Robert Lucas, Auteur ; A. Rowlands, Auteur ; A. Brown, Auteur ; et al., Auteur Année de publication : 2007 Article en page(s) : pp 165 - 185 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] agriculture [Termes IGN] carte d'occupation du sol [Termes IGN] classification floue [Termes IGN] eCognition [Termes IGN] habitat (urbanisme) [Termes IGN] image Landsat [Termes IGN] image multitemporelle [Termes IGN] indice de végétation [Termes IGN] intelligence artificielle [Termes IGN] logique floue [Termes IGN] Pays de Galles [Termes IGN] segmentation d'image [Termes IGN] série temporelle Résumé : (Auteur) The aim is to evaluate the use of time-series of Landsat sensor data acquired over an annual cycle for mapping semi-natural habitats and agricultural land cover. The location is Berwyn Mountains, North Wales, United Kingdom. The methods are Using eCognition Expert, segmentation of the Landsat sensor data was undertaken for actively managed agricultural land based on Integrated Administration and Control System (IACS) land parcel boundaries, whilst a per-pixel level segmentation was undertaken for all remaining areas. Numerical decision rules based on fuzzy logic that coupled knowledge of ecology and the information content of single and multi-date remotely sensed data and derived products (e.g., vegetation indices) were developed to discriminate vegetation types based primarily on inferred differences in phenology, structure, wetness and productivity. The results : The rule-based classification gave a good representation of the distribution of habitats and agricultural land. The more extensive, contiguous and homogeneous habitats could be mapped with accuracies exceeding 80%, although accuracies were lower for more complex environments (e.g., upland mosaics) or those with broad definition (e.g., semi-improved grasslands). The application of a rule-based classification to temporal imagery acquired over selected periods within an annual cycle provides a viable approach for mapping and monitoring of habitats and agricultural land in the United Kingdom that could be employed operationally. Copyright ISPRS Numéro de notice : A2007-367 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2007.03.003 En ligne : https://doi.org/10.1016/j.isprsjprs.2007.03.003 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28730 [article]

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Tracking first responders: integrated Nav with software-defined radio (SDR) / A. Brown in GPS world, vol 17 n° 11 (November 2006)

Public [article]  inGPS world > vol 17 n° 11 (November 2006) . - pp 26 - 33 Titre : Tracking first responders: integrated Nav with software-defined radio (SDR) Type de document : Article/Communication Auteurs : A. Brown, Auteur ; et al., Auteur Année de publication : 2006 Article en page(s) : pp 26 - 33 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale [Termes IGN] navigation pédestre [Termes IGN] positionnement en intérieur [Termes IGN] positionnement par GPS [Termes IGN] secours d'urgence [Termes IGN] signal GPS Résumé : (Auteur) A networked radionavigation approach that augments GPS signals with time-of-arrival observations using a software-defined radio can overcome attenuation, and often complet blockage, of GPS inside buildings [indoor] or in urban canyons. The SDR can operate both as a GPS receiver and also as a 900MHz transceiver operating within the ISM band. Applications for this technology include firefighters and other first responders, and military operations in urban terrain. Copyright Questex Media Group Inc Numéro de notice : A2006-564 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28287 [article]

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Web cartography / Menno-Jan Kraak (2001)

Public Titre : Web cartography : developments and prospects Type de document : Monographie Auteurs : Menno-Jan Kraak, Éditeur scientifique ; A. Brown, Éditeur scientifique Mention d'édition : 2 Editeur : Londres : Taylor & Francis Année de publication : 2001 Importance : 210 p. Format : 16 x 24 cm ISBN/ISSN/EAN : 978-0-7484-0868-9 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes IGN] atlas numérique [Termes IGN] carte climatique [Termes IGN] carte routière [Termes IGN] carte touristique [Termes IGN] cartographie dynamique [Termes IGN] cartographie par internet [Termes IGN] cartographie thématique [Termes IGN] conception cartographique [Termes IGN] données localisées dynamiques [Termes IGN] données localisées numériques [Termes IGN] édition cartographique [Termes IGN] éditique web [Termes IGN] géomatique web [Termes IGN] organisme cartographique national [Termes IGN] utilisateur [Termes IGN] visualisation cartographique Résumé : (Editeur) Web maps are first put into a broad context, and specific characteristics of these maps are then examined from a user perspective. The various functions of maps on the Web are discussed, int he context of the technical background and fundamental user questions such as what can be done with existing data. Web cartography also provides insight into the particularities of multi-dimensional web maps. Typical characteristics are explained clearly from the perspectives of static viewing and dynamic viewing. For each category, design considerations, based on cartographic principles are discussed. Topics adressed include map contents, map physics and the map environment. Technical terms are explained when necessary. For several time-sensitive topics such as traffic, weather and tourism, the status and future of web maps are discussed. Atlases and national mapping agencies are also covered. Note de contenu : 1 Settings and needs for web cartography (MennoJan Kraak) 1.1 New mapping environments 1.2 Types of web maps 1.3 What is special about web maps? 1.4 This book and its website 2 Trends in cartography (MennoJan Kraak) 2.1 Visualisation process : cartographic principles 2.2 Visualisation strategies : mapping for public communication and mapping to stimulate visual thinking 2.3 New cartographic realms : mapping cyberspace 3 Use of maps on the Web (Corné P.J.M. van EIzakker) 3.1 Introduction 3.2 What's the use of web maps ? 3.3 Modes of using web maps 3.4 Finding and retrieving maps and geodata on the Web 3.5 Web maps in geospatial data infrastructures 4 Users of maps on the Web (Corné P.J.M. van EIzakker) 4.1 User profiles 4.2 How many web maps and web map users ? 4.3 Economic aspects 4.4 Problems and limitations 5 Cartographic principles (MennoJan Kraak) 5.1 Visualising geospatial data 5.2 Cartographic information analysis 5.3 The cartographic sign system 5.4 Multi-dimensional display 6 Publishing maps on the Web (Barend Köbben) 6.1 Introduction 6.2 Internet and the World Wide Web 6.3 Basic publishing on the Web 6.4 Extending web map functionality 7 Web map design in practice (Jeroen van den Worm) 7.1 Introduction 7.2 Factors influencing map design 7.3 Cartographic symbol design for web maps 7.4 Colour on web maps 7.5 Type fonts and name placement on web maps 7.6 Advanced design 8 Web maps and National Mapping Organisations (Rob M. Hootsmans) 8.1 The changing environment of national mapping organizations 8.2 Why Web maps for NMOs? 8.3 Current NMO activities on the Web 8.4 Recommendations 9 Web maps and tourists (Allan Brown) 9.1 Tourist information on the Web 9.2 Examples of official and commercial websites 9.3 More advanced cartographic techniques 9.4 Downloading and printing high quality tourist maps 9.5 Future prospects 10 Web maps and atlases (MennoJan Kraak) 10.1 Atlas concepts 10.2 Web atlases 11 Web maps and weather (Connie Blok) 11.1 Introduction 11.2 The medium : television or the Web 11.3 Weather maps on the Web 11.4 Expectations and hopes 12 Web maps and road traffic (Nicoline N.M. Emmer) 12.1 Introduction 12.2 Why use traffic web maps ? 12.3 Current dissemination of traffic information 12.4 Improvements of traffic sites 12.5 Future developments 13 Outlook (Mennojan Kraak and Allan Brown) Appendix A File formats and plugins (Wim Feringa) A.1 Introduction A.2 Coding / authoring A.3 Graphics A.4 Animation A.5 Video A.6 Sound A.7 Synchronised multimedia Appendix B Design, colour, images, fonts, file size (Wim Feringa) B.1 Website design B.2 Internet colour B.3 Image formats and file size B.4 Fonts Index Numéro de notice : 13025 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Recueil / ouvrage collectif Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=40376

Map design for screen displays / A. Brown in Cartographic journal (the), vol 30 n° 2 (December 1993)  

Public [article]  inCartographic journal (the) > vol 30 n° 2 (December 1993) . - pp 129 - 135 Titre : Map design for screen displays Type de document : Article/Communication Auteurs : A. Brown, Auteur Année de publication : 1993 Article en page(s) : pp 129 - 135 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie numérique [Termes IGN] conception cartographique [Termes IGN] couleur à l'écran [Termes IGN] optique physiologique [Termes IGN] visualisation cartographique Numéro de notice : A1993-029 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/000870493787860030 En ligne : https://www.tandfonline.com/doi/abs/10.1179/000870493787860030 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=25695 [article]

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An experimental forest map design based on the FAO-UNEP forest classification system / A. Brown in ITC journal, vol 1989 n° 3 - 4 (Septembre 1989)

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