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Architecture for a future C-band/L-band GNSS mission : Part 2 signal considerations and related user terminal aspects / José Avila-Rodriguez in Inside GNSS, vol 4 n° 4 (July - August 2009)
[article]
Titre : Architecture for a future C-band/L-band GNSS mission : Part 2 signal considerations and related user terminal aspects Type de document : Article/Communication Auteurs : José Avila-Rodriguez, Auteur ; J.H. Won, Auteur ; S. Wallner, Auteur ; et al., Auteur Année de publication : 2009 Article en page(s) : 21 p. ; pp 52 - 72 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Missions spatiales
[Termes IGN] bande C
[Termes IGN] bande L
[Termes IGN] charge utile
[Termes IGN] composant électronique
[Termes IGN] interférence
[Termes IGN] mission spatiale
[Termes IGN] signal GNSSRésumé : (Auteur) Almost all GNSS navigation signals operate in the crowded L-band portion of the radio frequency spectrum. In the past, C-band spectrum has been considered — and rejected — for GNSS services due to a couple of substantial obstacles, despite some distinct technical advantages. However, continued proliferation of signals in L-band and advances in electronics and spacecraft technologies have prompted a new look at C-band for future GNSS services. This article is the second of a two-part series describing the results of a new European Space Agency–sponsored study on the subject. Copyright Gibbons Media & Research LLC Numéro de notice : A2009-662 Affiliation des auteurs : non IGN Thématique : IMAGERIE/POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33563
in Inside GNSS > vol 4 n° 4 (July - August 2009) . - 21 p. ; pp 52 - 72[article]Voir aussiRéservation
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Code-barres Cote Support Localisation Section Disponibilité 159-09041 SL Revue Centre de documentation Revues en salle Disponible Documents numériques
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rchitecture for a future C-band/L-band GNSS ... - pdf éditeurAdobe Acrobat PDF Synthetic aperture GPS signal processing: concept and feasibility demonstration / A. Soloviev in Inside GNSS, vol 4 n° 3 (May - June 2009)
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Titre : Synthetic aperture GPS signal processing: concept and feasibility demonstration Type de document : Article/Communication Auteurs : A. Soloviev, Auteur ; F. Van Graas, Auteur ; et al., Auteur Année de publication : 2009 Article en page(s) : 12 p. ; pp 37 - 46 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] antenne synthétique
[Termes IGN] atmosphère terrestre
[Termes IGN] brouillage
[Termes IGN] étude de faisabilité
[Termes IGN] interférence
[Termes IGN] signal GPS
[Termes IGN] traitement du signalRésumé : (Auteur) In addition to positioning, navigation and timing, GPS turns out to be a useful sensor for studies of the Earth’s atmosphere. Synthetically generated, phased-array antennas can process GPS signals to create large antenna apertures. The resulting narrow-beam generation capabilities mitigate interference and jamming and produce high-resolution radar images — which could lead to interesting civil and military applications. Copyright Gibbons Media & Research LLC Numéro de notice : A2009-661 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33567
in Inside GNSS > vol 4 n° 3 (May - June 2009) . - 12 p. ; pp 37 - 46[article]Réservation
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Synthetic aperture GPS ... - scanAdobe Acrobat PDF A multi-antenna defence: receiver-autonomous GPS spoofing detection / P. Montgomery in Inside GNSS, vol 4 n° 2 (March - April 2009)
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Titre : A multi-antenna defence: receiver-autonomous GPS spoofing detection Type de document : Article/Communication Auteurs : P. Montgomery, Auteur ; T. Humphreys, Auteur ; et al., Auteur Année de publication : 2009 Article en page(s) : 7 p. ; pp 40 - 46 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] antenne GPS
[Termes IGN] détection
[Termes IGN] leurrage
[Termes IGN] positionnement en intérieur
[Termes IGN] utilisateur civilRésumé : (Auteur) Although GNSS spoofing — transmitting spurious signals to fool a receiver — has not yet emerged as a major problem for civil users, it represents a growing risk. Certainly the capability exists and, with ever more security-related applications coming online, the motivation for spoofing is increasing, too. In this article, researchers discuss a variety of countermeasures and demonstrate one successful method to detect GPS spoofing with a multiple antenna array. Copyright Gibbons Media & Research LLC Numéro de notice : A2009-650 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33568
in Inside GNSS > vol 4 n° 2 (March - April 2009) . - 7 p. ; pp 40 - 46[article]Réservation
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A multi-antenna defence ... - scanAdobe Acrobat PDF 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 Interference heads-up: receiver techniques for detecting and characterizing RFI [radio-frequency interference] / P. Ward in GPS world, vol 19 n° 6 (June 2008)
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Titre : Interference heads-up: receiver techniques for detecting and characterizing RFI [radio-frequency interference] Type de document : Article/Communication Auteurs : P. Ward, Auteur Année de publication : 2008 Article en page(s) : pp 64 - 73 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement du signal
[Termes IGN] brouillage
[Termes IGN] interférence
[Termes IGN] rapport signal sur bruit
[Termes IGN] récepteur GNSSRésumé : (Editeur) As we all know, GPS signals are weak. At a receiver's antenna, in the open air, their strength is about-160 dBW or 1 x 10~l6watts. Compare this to a cell-phone signal, which might be 60 dBW or 1 x 10~6 watts, 10 billion times stronger! While code correlation in the receiver lifts the GPS signals above the background noise floor, the signals are still relatively fragile, and building walls and other obstructions can significantly attenuate the received signal power so that they cannot be tracked by a conventional receiver. It is the ratio of the signal power to the noise power per unit band-width that determines the trackability of | the signal. Accordingly, if the receiver's noise floor should increase sufficiently, even in an outdoor environment, the signals may also become untrackable. This can happen when the receiver is subjected to intentional or unintentional radio-frequency interference (RFI) by transmitter operating on or near GPS frequencies. If the interference is strong enough, it can jam the receiver. Although intentional jamming is typically of concern only to military GPS users, unintentional jamming can occur anywhere and any- time and can affect large numbers of users within the range of the jamming transmitter. The jamming incident in San Diego harbor in January 2007, for example, affected all GPS users within a range of about 15 kilometers including a medical services paging network. Such jamming renders a GPS receiver inoperable. But how do users know that their receivers are being jammed and not suffering some other type of malfunction? Clearly it would be advantageous for users to receive a heads-up when jamming signals are present and, if possible, for the receiver to take corrective action automatically. In this month's column, we look at some simple techniques, which can be easily incorporated into the design of a GNSS receiver, to detect, characterize, and actually mitigate RFI. Such receiver enhancements will benefit civilian and military users alike. Copyright Questex Media Group Inc Numéro de notice : A2008-165 Affiliation des auteurs : non IGN Thématique : IMAGERIE/POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29160
in GPS world > vol 19 n° 6 (June 2008) . - pp 64 - 73[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 067-08061 RAB Revue Centre de documentation En réserve L003 Disponible Galileo signal experimentation / M. Hollreiser in GPS world, vol 18 n° 5 (May 2007)PermalinkElectromagnetic wave scattering from the sea surface in the presence of wind wave patterns / V. Shrira in International Journal of Remote Sensing IJRS, vol 24 n° 24 (December 2003)PermalinkRadiofrequency interference and GPS: a growing concern / F. Butsch in GPS world, vol 13 n° 10 (October 2002)PermalinkGPS limitations and vulnerabilities / K. de Jong in Geoinformatics, vol 5 n° 3 (01/04/2002)PermalinkRunning interference : testing a suppression unit / M.S. Braasch in GPS world, vol 9 n° 3 (March 1998)PermalinkUsing rats to catch bad signals / C. Fry in GIS Europe, vol 7 n° 2 (01/02/1998)PermalinkSystematic investigations of error- and system-modelling of satellite based flight approaches and landing in Switzerland / M. Scaramuzza (1998)PermalinkManuel d'optique / Germain Chartier (1997)PermalinkInterference measurements of the Chang Yang standard baseline in 1994 / Jorma Jokela (1996)PermalinkOptique / J.P. Perez (1996)PermalinkUnderstanding GPS / Elliott D. Kaplan (1996)PermalinkPermalinkInterference measurements of the Taoyuan standard baseline / Markku Poutanen (1995)PermalinkCoherent radar performance estimation / J.L. Kurtz (1993)PermalinkCours de physique générale à l'usage de l'enseignement supérieur scientifique et technique / Georges Bruhat (1992)PermalinkInterference measurements of the Nummela standard baseline in 1977, 1983, 1984 and 1991 / J. Kaariainen (1992)PermalinkThe remeasurement of the Chang Yang standard baseline / R. Konttinen (1991)PermalinkSpatial interference in the AVIRIS imaging spectrometer / J.F. Rose in Photogrammetric Engineering & Remote Sensing, PERS, vol 55 n° 9 (september 1989)PermalinkThe Chang Yang standard baseline / J. Kaariainen (1986)PermalinkThe GPS microstrip antenna properties, reduction of multipath contamination and other interference by an RF absorbent ground plane / S. Tallqvist (04/11/1985)PermalinkVibrations et phénomènes de propagation, 2. Ondes / Jean-Paul Mathieu (1974)Permalink3. Cours de physique Berkeley. Tome 3, Ondes / F.S. Crawford (1972)PermalinkOptique / Maurice Françon (1972)PermalinkImages optiques / Pierre Fleury (1968)PermalinkOptical interferometry / Maurice Françon (1968)PermalinkOptique physique, Tome 1. Propagation, cohérence, interférences / J. Roig (1967)PermalinkUntersuchungen zur Bestimmung des Spiegelabstandes 0-1 beim Interferenzkomparator von Väisälä / H. Grosse (1964)PermalinkRemarques sur l'emploi des interférences lumineuses pour la mesure rapide de la planéité des plaques photographiques utilisées dans les levés cartographiques en avion / Jean Cruset (1960)PermalinkLe contraste de phase et le contraste par interférences, Colloque de la Commission internationale d'optique / Maurice Françon (1952)Permalink