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Map-aided GPS navigation: linking vehicles and maps to support location-based services / S. Syed in GPS world, vol 16 n° 11 (November 2005)

Public [article]  inGPS world > vol 16 n° 11 (November 2005) . - pp 39 - 44 Titre : Map-aided GPS navigation: linking vehicles and maps to support location-based services Type de document : Article/Communication Auteurs : S. Syed, Auteur ; E. Cannon, Auteur Année de publication : 2005 Article en page(s) : pp 39 - 44 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale [Termes IGN] carte routière [Termes IGN] géonavigateur [Termes IGN] GPS assisté pour la navigation (technologies) [Termes IGN] logique floue [Termes IGN] navigation à l'estime [Termes IGN] navigation automobile [Termes IGN] service fondé sur la position Résumé : (Editeur) Installed GPS navigation systems are becoming popular options for new car buyers. And many aftermarket, portable, and PDA- or cell phone-based systems are available in the marketplace. A basic GPS navigation system can provide continuous, accurate navigation, except when the GPS signals are blocked by buildings, tunnels, or other obstructions or when multipath or interference reduces position accuracy. A factory-installed system might include additional sensors such as an odometer or gyroscope to provide dead-reckoning navigation when GPS signals are lacking. Another aid to accurate navigation is map-matching in which the computed position fix is snapped onto the nearest road. However, depending on the fix error and the density of the road network, the system may or may not snap the fix onto the correct road. In this month's column, guest authors Syed and Cannon examine a novel technique that tightly integrates information from accurate maps with raw GPS and gyro data to determine a vehicle's position. Using classic statistical theory and fuzzy logic algorithms, the technique improved vehicle navigation accuracy in an urban canyon setting by more than 30 percent. Copyright Questex Media Group Inc Numéro de notice : A2005-581 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27716 [article]

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