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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)

Public [article]  inGPS world > vol 16 n° 10 (October 2005) . - pp 37 - 42 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 GPS Résumé : (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 [article]

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