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Collective detection: enhancing GNSS receiver sensitivity by combining signals from multiple satellites / Penina Axelrad in GPS world, vol 21 n° 1 (January 2010)
[article]
Titre : Collective detection: enhancing GNSS receiver sensitivity by combining signals from multiple satellites Type de document : Article/Communication Auteurs : Penina Axelrad, Auteur ; J. Donna, Auteur ; M. Mitchell, Auteur ; S. Mohiuddin, Auteur Année de publication : 2010 Article en page(s) : pp 58 - 64 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] détection du signal
[Termes IGN] fusion de données multisource
[Termes IGN] géonavigateur
[Termes IGN] GNSS assisté pour la navigation
[Termes IGN] GPS-INS
[Termes IGN] positionnement par GNSS
[Termes IGN] qualité du signal
[Termes IGN] traitement du signalRésumé : (Auteur) [...] Poor signal reception in other than open-sky environments is still a problem with conventional GPS receivers. However, extending signal integration times and using assisted-GPS techniques can give GPS some degree of capability to operate indoors and in other restricted environments, albeit typically with reduced positioning accuracy. An antenna with sufficient gain is needed and capable systems are available on the market. The pilot channels of modernized GNSS signals will also benefit signal acquisition and tracking in challenging environments.
In this month's column, we look at a completely different approach to enhancing signal sensitivity. Rather than requiring each satellite's signal to be acquired and tracked before it can be used in the navigation solution, the new approach dubbed "collective detection" combines the received signal power from multiple satellites in a direct-to-navigation-solution procedure. Besides providing a quick coarse position solution with weak signals, this approach can be used to monitor the signal environment, aid deeply-coupled GPS/inertial navigation, and assist with terrain and feature recognition. Copyright Questex Media GroupNuméro de notice : A2010-019 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30215
in GPS world > vol 21 n° 1 (January 2010) . - pp 58 - 64[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 067-2010011 RAB Revue Centre de documentation En réserve L003 Disponible Navigation Signal Processing for GNSS Software Receivers / T. Pany (2010)
Titre : Navigation Signal Processing for GNSS Software Receivers Type de document : Monographie Auteurs : T. Pany, Auteur Editeur : Londres, Washington : Artech House Année de publication : 2010 Collection : GNSS Technology and applications series Importance : 352 p. Format : 18 x 26 cm ISBN/ISSN/EAN : 978-1-60807-027-5 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] analyse discriminante
[Termes IGN] corrélation
[Termes IGN] détection du signal
[Termes IGN] estimation statistique
[Termes IGN] filtrage du bruit
[Termes IGN] Global Navigation Satellite System
[Termes IGN] logiciel de post-traitement GPS
[Termes IGN] positionnement cinématique en temps réel
[Termes IGN] prétraitement du signal
[Termes IGN] pseudolite
[Termes IGN] récepteur GNSS
[Termes IGN] récepteur GPS
[Termes IGN] traitement du signal
[Termes IGN] transformation rapide de FourierIndex. décimale : 30.61 Systèmes de Positionnement par Satellites du GNSS Résumé : (Editeur) The advancement of software radio technology has provided an opportunity for the design of performance-enhanced GNSS receivers that are more flexible and easier to develop than their FPGA or ASIC based counterparts. Filling a gap in the current literature on the subject, this highly practical resource offers you an in-depth understanding of navigation signal detection and estimation algorithms and their implementation in a software radio. This unique book focuses on high precision applications for GNSS signals and an innovative RTK receiver concept based on difference correlators. You learn how to develop navigation receivers for top performance using basic algorithms, like correlation and tracking, which can be understood on an intuitive level. Additionally, the book provides you with a theoretical framework for signal estimation and detection that gives you the knowledge you need to make performance assessments without building a receiver. The theoretical treatment also gives you hints for choosing optimal algorithms for your projects in the field. Note de contenu : Introduction.
Radio Navigation Signals.
Software-Defined Radio.
GNSS Receiver Structure and Dataflow.
Signal Estimation.
Signal Detection.
Sample Preprocessing.
Correlators.
Discriminators.
Receiver Core Operations.
GNSS SDR RTK System Concept.Numéro de notice : 20457 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=63024 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20457-01 30.61 Livre Centre de documentation Géodésie Disponible 20457-02 30.61 Livre Centre de documentation Géodésie Disponible Advanced full-waveform lidar data echo detection: assessing quality of derived terrain and tree height models in an alpine coniferous forest / Adrien Chauve in International Journal of Remote Sensing IJRS, vol 30 n° 19 (October 2009)
[article]
Titre : Advanced full-waveform lidar data echo detection: assessing quality of derived terrain and tree height models in an alpine coniferous forest Type de document : Article/Communication Auteurs : Adrien Chauve , Auteur ; Cédric Vega , Auteur ; Sylvie Durrieu, Auteur ; Tristan Allouis, Auteur ; William Puech, Auteur ; Frédéric Bretar, Auteur ; Marc Pierrot-Deseilligny , Auteur Année de publication : 2009 Projets : TOSCA ExFOLIO / Durrieu, Sylvie Conférence : ForestSat 2007, forests and remote sensing : methods and operational tools 05/11/2007 07/11/2007 Montpellier France Article en page(s) : pp 5211 - 5228 Note générale : Bibliographie
This work is part of the ExFOLIO project and was realized thanks to the financial support of the CNES (Centre National d’Etudes Spatiales).Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] Alpes (France)
[Termes IGN] canopée
[Termes IGN] détection du signal
[Termes IGN] données lidar
[Termes IGN] hauteur des arbres
[Termes IGN] lidar à retour d'onde complète
[Termes IGN] modèle de Gauss-Markov
[Termes IGN] modèle numérique de sursol
[Termes IGN] modèle numérique de terrain
[Termes IGN] Pinus nigra
[Termes IGN] semis de points
[Termes IGN] signal laser
[Termes IGN] télémètre laser aéroporté
[Termes IGN] transformation en ondelettesRésumé : (Auteur) Small footprint full-waveform airborne lidar systems offer large opportunities for improved forest characterization. To take advantage of full-waveform information, this paper presents a new processing method based on the decomposition of waveforms into a sum of parametric functions. The method consists of an enhanced peak detection algorithm combined with advanced echo modelling including Gaussian and generalized Gaussian models. The study focuses on the qualification of the extracted geometric information. Resulting 3D point clouds were compared to the point cloud provided by the operator. 40 to 60% additional points were detected mainly in the lower part of the canopy and in the low vegetation. Their contribution to Digital Terrain Models (DTMs) and Canopy Height Models (CHMs) was then analysed. The quality of DTMs and CHM-based heights was assessed using field measurements on black pine plots under various topographic and stand characteristics. Results showed only slight improvements, up to 5 cm bias and standard deviation reduction. However both tree crowns and undergrowth were more densely sampled thanks to the detection of weak and overlapping echoes, opening up opportunities to study the detailed structure of forest stands. Numéro de notice : A2009-380 Affiliation des auteurs : MATIS+Ext (1993-2011) Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160903023009 Date de publication en ligne : 22/09/2009 En ligne : https://doi.org/10.1080/01431160903023009 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30010
in International Journal of Remote Sensing IJRS > vol 30 n° 19 (October 2009) . - pp 5211 - 5228[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-09111 RAB Revue Centre de documentation En réserve L003 Exclu du prêt Documents numériques
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Advanced full-waveform lidar data echo detection ... - preprintAdobe Acrobat PDF Applications of signal detection theory to Geographic Information Science / A. Griffin in Cartographica, vol 44 n° 3 (September 2009)
[article]
Titre : Applications of signal detection theory to Geographic Information Science Type de document : Article/Communication Auteurs : A. Griffin, Auteur ; Scott Bell, Auteur Année de publication : 2009 Article en page(s) : pp 145 - 158 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] aide à la décision
[Termes IGN] détection du signal
[Termes IGN] incertitude des données
[Termes IGN] système d'information géographique
[Termes IGN] théorie du signal
[Termes IGN] utilisateurRésumé : (Auteur) Signal detection theory (SDT) is a framework used by psychologists to study decision making under uncertain conditions. While we often know a great deal about how different methodological choices can affect the outcome of an analysis, we know less about how information end users interpret and understand competing outcomes in the context of the decisions they are trying to make. We contend that such information would be useful and assert that SDT analysis is one method of building this understanding. We provide an introduction to SDT methods and an example of the methods applied to a navigation experiment, discuss why SDT may be useful for GIScientists, and provide several examples of other potential application areas. Copyright University of Toronto Press Numéro de notice : A2009-408 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.3138/carto.44.3.145 Date de publication en ligne : 02/10/2009 En ligne : https://doi.org/10.3138/carto.44.3.145 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30039
in Cartographica > vol 44 n° 3 (September 2009) . - pp 145 - 158[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 031-09031 RAB Revue Centre de documentation En réserve L003 Disponible GNSS / Scott Gleason (2009)
Titre : GNSS : applications and methods Type de document : Monographie Auteurs : Scott Gleason, Éditeur scientifique ; Demoz Gebre-Egziabher, Éditeur scientifique Editeur : Londres, Washington : Artech House Année de publication : 2009 Collection : GNSS Technology and applications series Importance : 508 p. Format : 18 x 26 cm - cont. 1 DVD ISBN/ISSN/EAN : 978-1-59693-329-3 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] BeiDou
[Termes IGN] centrale inertielle
[Termes IGN] détection du signal
[Termes IGN] Galileo
[Termes IGN] géodésie spatiale
[Termes IGN] Global Navigation Satellite System
[Termes IGN] Global Positioning System
[Termes IGN] GNSS assisté pour la navigation
[Termes IGN] GNSS en mode différentiel
[Termes IGN] GPS-INS
[Termes IGN] interférence
[Termes IGN] logiciel de post-traitement GPS
[Termes IGN] LORAN (système)
[Termes IGN] navigation aérienne
[Termes IGN] navigation inertielle
[Termes IGN] navigation spatiale
[Termes IGN] occultation du signal
[Termes IGN] positionnement différentiel
[Termes IGN] positionnement en intérieur
[Termes IGN] positionnement par GNSS
[Termes IGN] poursuite de satellite
[Termes IGN] radiofréquence
[Termes IGN] récepteur GPS
[Termes IGN] signal GNSS
[Termes IGN] simulation
[Termes IGN] système de numérisation mobile
[Termes IGN] traitement du signal
[Termes IGN] transmission de donnéesIndex. décimale : 30.70 Navigation et positionnement Résumé : (Editeur) Over the past few years, the growth of GNSS applications has been staggering. And, this trend promises to continue in the foreseeable future. Placing emphasis on applications development, this unique resource offers a highly practical overview of GNSS (global navigation satellite systems), including GPS. The applications presented in the book range from the traditional location applications to combining GNSS with other sensors and systems and into more exotic areas, such as remote sensing and space weather monitoring. Written by leading experts in the field, this book presents the fundamental underpinnings of GNSS and provides you with detailed examples of various GNSS applications. Moreover, the software included with the book contains valuable processing tools and real GPS data sets to help you rapidly advance your own work in the field. You will find critical information and tools that help give you a head start to embark on future research and development projects. Note de contenu : - Introduction.
- GNSS Signal Acquisition and Tracking.
- Position, Velocity and Time Estimation.
- Differential GNSS: Accuracy and Integrity.
- A GPS Software Receiver.
- Integration of GNSS and INS.
- GNS/INS Case Studies.
- Integrated LADAR, INS and GNSS Navigation.
- Combining GNSS with RF Systems.
- Aviation Applications.
- Integrated GNSS and Loran Systems.
- Indoor and Weak Signal Navigation.
- Space Applications.
- Geodesy and Surveying.
- Atmospheric Sensing Using GNSS.
- Remote Sensing Using Bistatic GNSS Reflections.
- Epilogue.
- New Navigation Signals and Future Systems in Evolution.Numéro de notice : 20459 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=63026 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20459-01 30.70 Livre Centre de documentation Géodésie Disponible ICESat altimetry data product verification at White Sands Space Harbor / L.A. Magruder in IEEE Transactions on geoscience and remote sensing, vol 45 n° 1 (January 2007)PermalinkLe traitement du signal sous Matlab / André Quinquis (2007)PermalinkFundamentals of global positioning system receivers / James Bao-Yen Tsui (2005)PermalinkLe traitement du signal sous Matlab / André Quinquis (2000)PermalinkDétection et estimation des signaux / D. Declercq (1996)PermalinkDétection et détecteurs de rayonnements optiques / F. Desvignes (1987)PermalinkRadarmétéorologie / H. Sauvageot (1982)Permalink