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Turn, turn, turn: wheel-speed dead reckoning for vehicle navigation / C. Hay in GPS world, vol 16 n° 10 (October 2005)
[article]
Titre : Turn, turn, turn: wheel-speed dead reckoning for vehicle navigation Type de document : Article/Communication Auteurs : C. Hay, Auteur Année de publication : 2005 Article en page(s) : pp 37 - 42 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] direction
[Termes IGN] GPS assisté pour la navigation (technologies)
[Termes IGN] navigation à l'estime
[Termes IGN] navigation automobile
[Termes IGN] odomètre
[Termes IGN] positionnement par GPSRésumé : (Editeur) "Let us now consider an invention by no means useless, and delivered to us by the ancients as of ingenuity, by means of which, when on a journey by land or sea, one may ascertain the distance travelled. It is as follows. The wheels of the chariot must be four feet diameter; so that, marking a cer-tain point thereon, whence it begins its revolution on the ground, when it has completed that revolution, it will have gone on the road over a space equal to twelve feet and a half." So begins the description by the Roman engineer Marcus Vitruvius Pollio of a distance-measuring device based on the rotation of a wheel. This device is the ancestor of the odometer and wheel-speed sensors present in virtually every vehicle on the road today. Both odometers and wheel-speed sensors can be used for dead-reckoning navigation - determin-ing a vehicle's position based on an initial position, the measured distance travelled in a given time interval, and the vehicle's heading. Compasses have traditionally supplied the heading information in a dead-reckoning navigation system. However, with wheel-speed sensors on each wheel, the system can determine not only the vehicle's speed but also its heading by differencing the measurements from the left and right wheels. In this month's column, we take a look at the use of wheel-speed sensors for in-vehicle navigation systems. Such systems can provide continuous navigation even when GPS signals are blocked by buildings, tunnels, and other obstructions. Copyright Questex Media Group Inc Numéro de notice : A2005-582 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27717
in GPS world > vol 16 n° 10 (October 2005) . - pp 37 - 42[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 067-05101 SL Revue Centre de documentation Revues en salle Disponible Prime time positioning: using broadcast TV signals to fill GPS acquisition gaps / M. Martone in GPS world, vol 16 n° 9 (September 2005)
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Titre : Prime time positioning: using broadcast TV signals to fill GPS acquisition gaps Type de document : Article/Communication Auteurs : M. Martone, Auteur ; J. Metzler, Auteur Année de publication : 2005 Article en page(s) : pp 52 - 59 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] GPS assisté pour la navigation (technologies)
[Termes IGN] position directe
[Termes IGN] positionnement par GPS
[Termes IGN] signal analogique
[Termes IGN] signal GPS
[Termes IGN] signal numérique
[Termes IGN] TELEVISIONRésumé : (Editeur) Television. It features prominently in our living rooms and in our daily lives. It informs us, educates us, and entertains us. And now, thanks to a development at Rosum Corp. in Mountain View, California, TV will also position us. Researchers have devised a way to use terrestrial TV signals, both analog and digital, to determine positions. In a similar fashion to how GPS works, a special receiver can extract timing information from received TV signals to produce pseudo-ranges and, with additional transmitter clock offset information from a server, can determine the horizontal coordinates of the receiver. And since TV signals are quite strong, positions can be obtained inside buildings where conventional GPS and often assisted GPS does not work. In this month's column, we examine TV positioning. Authors from Rosum Corp. describe how the technique works, both standalone and in conjunction with GPS, discuss its advantages and limitations, and how the technique might provide added security for the global position, navigation, and timing infrastructure in these uncertain times. Copyright Questex Media Group Inc Numéro de notice : A2005-583 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27718
in GPS world > vol 16 n° 9 (September 2005) . - pp 52 - 59[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 067-05091 SL Revue Centre de documentation Revues en salle Disponible Galileo, the new standard for satellite navigation : from GPS to GNSS / R. Wevers in Geoinformatics, vol 8 n° 5 (01/08/2005)
[article]
Titre : Galileo, the new standard for satellite navigation : from GPS to GNSS Type de document : Article/Communication Auteurs : R. Wevers, Auteur Année de publication : 2005 Article en page(s) : pp 6 - 11 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] constellation Galileo
[Termes IGN] European Geostationary Navigation Overlay Service
[Termes IGN] Galileo
[Termes IGN] Global Navigation Satellite System
[Termes IGN] navigationRésumé : (Auteur) For some time now satellites have been part of our daily lives. Satellites are used for communication, weather forecasting, scientific research, etc. The application which has infiltrated into our daily lives most is satellite navigation. Many people have a navigation system in their car and anybody can purchase a GPS-receiver for recreational purposes. The basis for these applications are tens of satellites that have been built and launched solely for navigational purposes. Numéro de notice : A2005-329 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27465
in Geoinformatics > vol 8 n° 5 (01/08/2005) . - pp 6 - 11[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 262-05051 SL Revue Centre de documentation Revues en salle Disponible Continuous navigation: combining GPS with sensor-based dead reckoning / G.Z. Bronsen in GPS world, vol 16 n° 4 (April 2005)
[article]
Titre : Continuous navigation: combining GPS with sensor-based dead reckoning Type de document : Article/Communication Auteurs : G.Z. Bronsen, Auteur ; D. Ammann, Auteur ; et al., Auteur Année de publication : 2005 Article en page(s) : pp 47 - 52 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] capteur (télédétection)
[Termes IGN] étalonnage d'instrument
[Termes IGN] géonavigateur
[Termes IGN] GPS assisté pour la navigation (technologies)
[Termes IGN] milieu urbain
[Termes IGN] navigation à l'estime
[Termes IGN] navigation automobile
[Termes IGN] positionnement par GPS
[Termes IGN] propagation du signalRésumé : (Editeur) "Can you hear me now? " This familiar question is asked countless times each day by mobile phone users attempting to improve their signal. Terrain, buildings, and foliage can block or seriously impede the propagation of cell-phone signal. Users of GPS receivers suffer the same problems. While there have been some advances in improving the sensitivity of GPS receivers and developing techniques such as assisted GPS that permit a GPS receiver to use attenuated signals, the antenna of a conventional receiver must have a direct line Of sight to the GPS satellites. In urban canyons, it may not be able to "see" a sufficient number of satellites with good geometry to determine a three-dimensional Position fix. And in tunnels or in parking garages, the receiver will see no satellites at all. Consequently, continuous navigation in many cities is impossible for conventional GPS-only navigation Systems. In this month's column, we look at how GPS can be combined with other sensors to provide continuous navigation in even the most-challenging environments. Copyright Questex Media Group Inc Numéro de notice : A2005-162 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27300
in GPS world > vol 16 n° 4 (April 2005) . - pp 47 - 52[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 067-05041 SL Revue Centre de documentation Revues en salle Disponible Satellite navigation, wireless networks and the internet: greater together than the sum of the parts? / F. Toran in ESA bulletin, n° 121 (February 2005)
[article]
Titre : Satellite navigation, wireless networks and the internet: greater together than the sum of the parts? Type de document : Article/Communication Auteurs : F. Toran, Auteur ; J. Ventura, Auteur ; A. Garcia, Auteur ; et al., Auteur Année de publication : 2005 Article en page(s) : pp 28 - 35 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] European Geostationary Navigation Overlay Service
[Termes IGN] internet
[Termes IGN] PDA
[Termes IGN] récepteur
[Termes IGN] SISNeT
[Termes IGN] télécommunication sans filRésumé : (Auteur) Over the last 20 years, major developments have taken place in parallel in the key technology areas of wireless communications ad satellite navigation. Both are gradually becoming indispensable tools in the professional and consumer worlds. Nowadays, major synergies are developing in terms of wireless mobile terminals with a navigation capability, or navigation terminals with wireless communications capabilities. ESA is undertaken a series of activities to support the exploitation of such synergies for the benefit of Europe's citizens through the provision of new and upgraded services from space. Numéro de notice : A2005-114 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans En ligne : http://www.esa.int/esapub/bulletin/bulletin121/bul121d_toran.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27252
in ESA bulletin > n° 121 (February 2005) . - pp 28 - 35[article]Applied satellite navigation using GPS, Galileo, and augmentation systems / R. Prasad (2005)PermalinkFollowing the tour de France with EGNOS / D. Detain in ESA bulletin, n° 120 (01/11/2004)PermalinkEGNOS navigation applications: a chance for Europe / A. Garcia in ESA bulletin, n° 119 (August 2004)PermalinkPerformance analysis of the real-time Canada-wide DGPS service (CDGPS) / M.E. Cannon in Geomatica, vol 58 n° 2 (June 2004)PermalinkPosition via Internet: SISNeT catches GPS in urban canyons / F. Toran in GPS world, vol 15 n° 4 (April 2004)PermalinkGPS + INS + pseudolites: an integrated positioning system / Y. Yi in GPS world, vol 14 n° 7 (July 2003)Permalinkvol 51 n° 203 - 01/07/2003 (Bulletin de Navigation aérienne, maritime, spatiale, terrestre) / Institut français de navigationPermalinkGPS safety net GPS-Loran prototype processor / Lukas Roth in GPS world, vol 14 n° 5 (May 2003)PermalinkECORAIL: Satellite navigation into the domain of railway networks / B. Hoffman-Wellenhof in Geoinformatics, vol 6 n° 3 (01/04/2003)PermalinkNavigation : principles of positioning and guidance / Bernhard Hofmann-Wellenhof (2003)Permalink