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Mission design, operation and exploitation of the gravity field and steady-state ocean circulation explorer mission / R. Floberghagen in Journal of geodesy, vol 85 n° 11 (November /2011)
[article]
Titre : Mission design, operation and exploitation of the gravity field and steady-state ocean circulation explorer mission Type de document : Article/Communication Auteurs : R. Floberghagen, Auteur ; M. Fehringer, Auteur ; D. Lamarre, Auteur ; D. Muzi, Auteur ; et al., Auteur Année de publication : 2011 Article en page(s) : pp 749 - 758 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] champ de pesanteur terrestre
[Termes IGN] circulation océanique
[Termes IGN] données GOCE
[Termes IGN] géoïde terrestre
[Termes IGN] GOCE
[Termes IGN] gradient de gravitation
[Termes IGN] gradiomètre
[Termes IGN] gravimétrie spatialeRésumé : (Auteur) The European Space Agency’s Gravity field and steady-state ocean circulation explorer mission (GOCE) was launched on 17 March 2009. As the first of the Earth Explorer family of satellites within the Agency’s Living Planet Programme, it is aiming at a better understanding of the Earth system. The mission objective of GOCE is the determination of the Earth’s gravity field and geoid with high accuracy and maximum spatial resolution. The geoid, combined with the de facto mean ocean surface derived from twenty-odd years of satellite radar altimetry, yields the global dynamic ocean topography. It serves ocean circulation and ocean transport studies and sea level research. GOCE geoid heights allow the conversion of global positioning system (GPS) heights to high precision heights above sea level. Gravity anomalies and also gravity gradients from GOCE are used for gravity-to-density inversion and in particular for studies of the Earth’s lithosphere and upper mantle. GOCE is the first-ever satellite to carry a gravitational gradiometer, and in order to achieve its challenging mission objectives the satellite embarks a number of world-first technologies. In essence the spacecraft together with its sensors can be regarded as a spaceborne gravimeter. In this work, we describe the mission and the way it is operated and exploited in order to make available the best-possible measurements of the Earth gravity field. The main lessons learned from the first 19 months in orbit are also provided, in as far as they affect the quality of the science data products and therefore are of specific interest for GOCE data users. Numéro de notice : A2011-467 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-011-0498-3 Date de publication en ligne : 18/10/2011 En ligne : https://doi.org/10.1007/s00190-011-0498-3 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31361
in Journal of geodesy > vol 85 n° 11 (November /2011) . - pp 749 - 758[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 266-2011111 RAB Revue Centre de documentation En réserve L003 Disponible The role of the surveyor / B. Fosburgh in Geoinformatics, vol 14 n° 6 (01/09/2011)
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Titre : The role of the surveyor Type de document : Article/Communication Auteurs : B. Fosburgh, Auteur Année de publication : 2011 Article en page(s) : pp 20 - 24 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Topographie
[Termes IGN] évolution technologique
[Termes IGN] géomètre
[Termes IGN] géomètre-expert
[Termes IGN] instrument de géodésie
[Termes IGN] instrument de topographie
[Termes IGN] métierRésumé : (Auteur) The role of the surveyor has changed significantly over time, and will continue to do so. In this article, Trimble's Bryn Fosburgh has a critical look at the changing role of the surveyor. Technological changes have defined the past, present and future of the surveying industry and profession. It is important not to forget the core survey knowledge, but also to change and adopt new skills and areas of practice. Numéro de notice : A2011-352 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31131
in Geoinformatics > vol 14 n° 6 (01/09/2011) . - pp 20 - 24[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 262-2011061 SL Revue Centre de documentation Revues en salle Disponible Doppler-aided positioning: Improving single-frequency in the urban environment / M. Bahrami in GPS world, vol 22 n° 5 (May 2011)
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Titre : Doppler-aided positioning: Improving single-frequency in the urban environment Type de document : Article/Communication Auteurs : M. Bahrami, Auteur ; Marek Ziebart, Auteur Année de publication : 2011 Article en page(s) : pp 47 - 56 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] données Doppler
[Termes IGN] effet Doppler
[Termes IGN] géonavigateur
[Termes IGN] lissage de données
[Termes IGN] mesurage de pseudo-distance
[Termes IGN] milieu urbain
[Termes IGN] positionnement cinématique en temps réel
[Termes IGN] récepteur monofréquenceRésumé : (Editeur) What do a GPS receiver, a policeman’s speed gun, a weather radar, and some medical diagnostic equipment have in common? Give up? They all make use of the Doppler effect. First proposed in 1842 by the Austrian mathematician and physicist, Christian Doppler, it is the change in the perceived frequency of a wave when the transmitter and the receiver are in relative motion. Doppler introduced the concept in an attempt to explain the shift in the color of light from certain binary stars. Three years later, the effect was tested for sound waves by the Dutch scientist Christophorus Buys Ballot. [...] The beginning of the space age heralded a new application of the Doppler effect. By measuring the shift in the received frequency of the radio beacon signals transmitted by Sputnik 1 from a known location, scientists were able to determine the orbit of the satellite. And shortly thereafter, they determined that if the orbit of a satellite was known, then the position of a receiver could be determined from the shift. That realization led to the development of the United States Navy Navigation Satellite System, commonly known as Transit, with the first satellite being launched in 1961. Initially classified, the system was made available to civilians in 1967 and was widely used for navigation and precise positioning until it was shut down in 1996. The Soviet Union developed a similar system called Tsikada and a special military version called Parus. These systems are also assumed to be no longer in use — at least for navigation. GPS and other global navigation satellite systems use the Doppler shift of the received carrier frequencies to determine the velocity of a moving receiver. Doppler-derived velocity is far more accurate than that obtained by simply differencing two position estimates. But GPS Doppler measurements can be used in other ways, too. In this month’s column, we look at how Doppler measurements can be used to smooth noisy code-based pseudoranges to improve the precision of autonomous positioning as well as to improve the availability of single-frequency real-time kinematic positioning, especially in urban environments. Numéro de notice : A2011-180 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30958
in GPS world > vol 22 n° 5 (May 2011) . - pp 47 - 56[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 067-2011051 RAB Revue Centre de documentation En réserve L003 Disponible Coherent integration time limits for mobile GNSS receivers in multipath fading environments / Ali Broumandan in Inside GNSS, vol 6 n° 2 (March - April 2011)
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Titre : Coherent integration time limits for mobile GNSS receivers in multipath fading environments Type de document : Article/Communication Auteurs : Ali Broumandan, Auteur ; J. Nielsen, Auteur ; Gérard Lachapelle, Auteur Année de publication : 2011 Article en page(s) : pp 62 - 65 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] navigation pédestre
[Termes IGN] positionnement en intérieur
[Termes IGN] récepteur GNSS
[Termes IGN] signal GNSS
[Termes IGN] trajet multipleRésumé : (Auteur) An emerging requirement for processing GNSS signals indoor, where signals were very weak and subject to spatial fading, has typically led receivers designers to use of longer coherent integration intervals that provide the additional processing gain required for the detection and processing of such weak signals. However, the physical motion of the handset imposed by the user limits the effectiveness of longer coherent integration intervals due to the spatial decorrelation of the multipath-faded GNSS signal. Research at the University of Calgary suggests factors that receivers designers might consider to address this problem. Numéro de notice : A2011-615 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans En ligne : http://www.insidegnss.com/node/2510 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33384
in Inside GNSS > vol 6 n° 2 (March - April 2011) . - pp 62 - 65[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 159-2011021 SL Revue Centre de documentation Revues en salle Disponible Documents numériques
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Coherent integration time limits ... - pdf éditeurAdobe Acrobat PDF Forum PPMD [2011] / Anonyme in Géomatique expert, n° 79 (01/03/2011)
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Titre : Forum PPMD [2011] Type de document : Article/Communication Auteurs : Anonyme, Auteur Année de publication : 2011 Article en page(s) : pp 28 - 31 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] acquisition d'images
[Termes IGN] données lidar
[Termes IGN] drone
[Termes IGN] modélisation 3D
[Termes IGN] positionnement par GPS
[Termes IGN] précision centimétrique
[Termes IGN] récepteur GPS
[Termes IGN] semis de points
[Termes IGN] télémètre laser
[Termes IGN] télémétrie laser aéroportéRésumé : (Auteur) Bref compte-rendu du forum annuel organisé par les élèves du master PPMD (photogrammétrie, positionnement et mesure des déformations) de l'ENSG. Thème de l'édition 2011 : "vers de nouvelles techniques d'acquisition". Numéro de notice : A2011-122 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30902
in Géomatique expert > n° 79 (01/03/2011) . - pp 28 - 31[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 265-2011021 RAB Revue Centre de documentation En réserve L003 Disponible IFN-001-P001267 PER Revue Nogent-sur-Vernisson Salle périodiques Exclu du prêt GNSS inside mobile phones: GPS, GLONASS, QZSS and SBAS in a single chip / Franck Van Diggelen in Inside GNSS, vol 6 n° 2 (March - April 2011)PermalinkPotentialities of multifrequency ionospheric correction in Global Navigation Satellite Systems / B. Kim in Journal of geodesy, vol 85 n° 3 (March 2011)PermalinkThe civilian battlefield protecting GNSS receivers from interference and jamming / M. Jones in Inside GNSS, vol 6 n° 2 (March - April 2011)PermalinkDynamic duo: combined GPS/GLONASS receivers in urban environments / Cillian O'Driscoll in GPS world, vol 22 n° 1 (January 2011)PermalinkLutte contre les charançons / Carole Remy (2011)PermalinkGNSS RF Compatibility assessment: Interference among GPS, Galileo and Compass / W. Liu in GPS world, vol 21 n° 12 (December 2010)PermalinkRecord, Replay, Rewind : Testing GNSS Receivers with Record and Playback Techniques / D. Hall in GPS world, vol 21 n° 10 (October 2010)PermalinkFriendly reflections: monitoring water level with GNSS / A. Egido in GPS world, vol 21 n° 9 (September 2010)PermalinkLevel Crossing Rate Estimation (LCRE): a new technique for finding GNSS carrier-to-noise ratios / Elena Simona Lohan in Inside GNSS, vol 5 n° 6 (September 2010)PermalinkSpoofing detection and mitigation with a moving handheld receiver / J. Nielsen in GPS world, vol 21 n° 9 (September 2010)Permalink[Testing multi-GNSS equipment part 2] GNSS simulators: Everything you wanted to know ... but were afraid to ask / I. Petrovski in Inside GNSS, vol 5 n° 6 (September 2010)PermalinkTesting multi-GNSS equipment: systems, simulators and the production pyramid [part 1] / I. Petrovski in Inside GNSS, vol 5 n° 5 (July - August 2010)PermalinkGPS, GLONASS, and more: multiple constellation processing in the International GNSS Service / Tim A. Springer in GPS world, vol 21 n° 6 (June 2010)PermalinkThe GPS assimilator: Upgrading receivers via benign spoofing / T. Humphreys in Inside GNSS, vol 5 n° 4 (June 2010)PermalinkGALILEO test user receiver: status, key results, performance / A. Van Den Berg in GPS world, vol 21 n° 4 (April 2010)PermalinkReady to navigate: a methodology for the estimation of the time-to-first-fix / M. Anghileri in Inside GNSS, vol 5 n° 2 (March - April 2010)PermalinkWide-area RTK: high precision positioning on a continental scale / Manuel Hernández-Pajares in Inside GNSS, vol 5 n° 2 (March - April 2010)PermalinkDévelopper avec les API Google maps / F. Goblet (2010)PermalinkNavigation Signal Processing for GNSS Software Receivers / T. Pany (2010)PermalinkPermalinkTesting software receivers / A. Mitelman in GPS world, vol 20 n° 12 (December 2009)PermalinkCoherent integration time : the longer, the better / T. Pany in Inside GNSS, vol 4 n° 6 (November - December 2009)PermalinkImproving the GNSS positioning stochastic model in the presence of ionospheric scintillation / M. Aquino in Journal of geodesy, vol 83 n° 10 (October 2009)PermalinkIt's not all bad, understanding and using GNSS multipath / A. Bilich in GPS world, vol 20 n° 10 (October 2009)PermalinkCONGO: First GPS/GIOVE tracking network for science, research / Oliver Montenbruck in GPS world, vol 20 n° 9 (September 2009)PermalinkGNSS update: interface control / Huibert-Jan Lekkerkerk in Geoinformatics, vol 12 n° 6 (01/09/2009)PermalinkThe soft approach: a recipe for a multi-system, multi-frequency GNSS receiver / Cillian O'Driscoll in Inside GNSS, vol 4 n° 5 (September - October 2009)PermalinkHigh-sensitivity GPS: an availability, reliability and accuracy test / V. Schweiger in Bulletin des sciences géographiques, n° 23 (juin 2009)PermalinkUtilisation d'un SIG nomade couplé à un GPS pour cartographier les paysages du Sud-Ouest toulousain / Yves Auda in XYZ, n° 119 (juin - août 2009)PermalinkDeux ponts sous contrôle GNSS / M. Mayo in Géomètre, n° 2058 (avril 2009)PermalinkInternational Heliophysical Year: GPS Network in Africa / C. Amory-Mazaudier in Earth, Moon, and Planets, vol 104 n° 1-4 (April 2009)PermalinkCombs filtering: improving acquisition and tracking in GNSS receivers / A. Dempster in GPS world, vol 20 n° 3 (March 2009)PermalinkThe design and the development of a hyperspectral and multispectral airborne mapping system / P.V. Gorsevski in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 2 (March - April 2009)PermalinkThe effects of navigation sensors and spatial road network data quality on the performance of map matching algorithms / M. Quddus in Geoinformatica, vol 13 n° 1 (March 2009)PermalinkGNSS antennas: an introduction to bandwidth, Gain pattern, polarization, and all that / J. Moernaut in GPS world, vol 20 n° 2 (February 2009)PermalinkCounting equivalent correlators: quantifying the number for GNSS acquisition engine architectures / A. Genghi in GPS world, vol 20 n° 1 (January 2009)PermalinkGNSS / Scott Gleason (2009)PermalinkA-GPS / Franck Van Diggelen (2009)PermalinkPrecise point positioning with GPS: A new approach for positioning, atmospheric studies, and signal analysis / Rodrigo Figueiredo Leandro (2009)PermalinkPermalinkUn point sur le réseau Teria : rencontre avec Patrick Di Renzo, directeur commercial d'Exagone, l'exploitant du réseau GPS permanent TERIA / Anonyme in Géomatique expert, n° 65 (01/11/2008)PermalinkProbabilities and Multipath : Multipath mitigation techniques using maximum-likelihood principle / Mohamed Sahmoudi in Inside GNSS, vol 3 n° 8 (November - December 2008)PermalinkRadio technology in the fiels: get the best out of your radios / A. Kluft in Geoinformatics, vol 11 n° 7 (01/11/2008)PermalinkTERIA : commentaires et suggestions / Anne Fantuzzi in Géomètre, n° 2050 (juillet - août 2008)PermalinkInterference heads-up: receiver techniques for detecting and characterizing RFI [radio-frequency interference] / P. Ward in GPS world, vol 19 n° 6 (June 2008)Permalink