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Robots behind the wheel: GPS/INS-vehicle assessment / B. Watts in GPS world, vol 14 n° 7 (July 2003)

Public [article]  inGPS world > vol 14 n° 7 (July 2003) . - pp 16 - 25 Titre : Robots behind the wheel: GPS/INS-vehicle assessment Type de document : Article/Communication Auteurs : B. Watts, Auteur ; et al., Auteur Année de publication : 2003 Article en page(s) : pp 16 - 25 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale [Termes IGN] filtre de Kalman [Termes IGN] GPS-INS [Termes IGN] robot [Termes IGN] sécurité routière [Termes IGN] véhicule automobile Résumé : (Auteur) Vehicle manufacturers use subjective and quantitative tests to improve safety and steering responsiveness in new car models. One major problem with quantitative tests is the test driver. Even professional drivers find it hard to drive the same course exactly the same way over and over again. Changing the car's suspension between tests or comparing two different types of vehicle makes this even more difficult. A new steering robot equipped with an inertial/GPS navigation system delivers very repeatable test results. Copyright Advanstar Communications Numéro de notice : A2003-440 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26519 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
067-03071	RAB	Revue	Centre de documentation	En réserve L003	Disponible

GPS + INS + pseudolites: an integrated positioning system / Y. Yi in GPS world, vol 14 n° 7 (July 2003)

Public [article]  inGPS world > vol 14 n° 7 (July 2003) . - pp 42 - 49 Titre : GPS + INS + pseudolites: an integrated positioning system Type de document : Article/Communication Auteurs : Y. Yi, Auteur ; Dorota A. Grejner-Brzezinska, Auteur ; Charles K. Toth, Auteur ; et al., Auteur Année de publication : 2003 Article en page(s) : pp 42 - 49 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale [Termes IGN] GPS assisté pour la navigation (technologies) [Termes IGN] GPS-INS [Termes IGN] positionnement cinématique en temps réel [Termes IGN] pseudolite [Termes IGN] signal GPS [Termes IGN] véhicule automobile Résumé : (Auteur) Kinematic positioning has become a standard GPS technique for precision navigation that supports surveying and mapping systems. One application for which the high accuracy and reliability of kinematic positioning are required is mobile mapping, whose market has significantly expanded in the past 10 years. Inertial navigation systems (INS) normally augment GPS to provide continuous and accurate trajectory and attitude information from the imaging sensors of mobile mapping systems. GPS contributes high accuracy and long-term stability (with properly resolved integer ambiguities and no losses of lock) and provides a means of error estimation for the INS sensor. A GPS-calibrated INS provides reliable bridging during GPS outages and supports ambiguity resolution after the CPS signal lock is re-established. Thus, high navigation accuracy normally can be achieved even if GPS signals are subject to occasional block-ages. But what if GPS signals are lost for extended periods of time or the visible constellation is limited to four or fewer satellites, which can often happen in urban canyons? Pseudo-satellites (pseudolites) may be the answer. This month's column discusses an experimental GPS/INS/pseudolite system, with special emphasis on the error spectrum and the navigation performance analysis based on a medium-accuracy and highly reliable INS, limited GPS constellation availability, and a varying number of pseudolites. It also describes simulated and actual pseudolite data in typical noisy environments and analyses their impact on navigation accuracy. Copyright Advanstar Communications Numéro de notice : A2003-441 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26520 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
067-03071	RAB	Revue	Centre de documentation	En réserve L003	Disponible