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Positioning in challenging environments using ultra-wideband sensor networks / Zoltan Koppanyi in GPS world, vol 26 n° 3 (March 2015)  

Public [article]  inGPS world > vol 26 n° 3 (March 2015) Titre : Positioning in challenging environments using ultra-wideband sensor networks Type de document : Article/Communication Auteurs : Zoltan Koppanyi, Auteur ; Charles K. Toth, Auteur ; Dorota A. Grejner-Brzezinska, Auteur Année de publication : 2015 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement [Termes IGN] GNSS assisté pour la navigation [Termes IGN] onde radioélectrique [Termes IGN] positionnement en intérieur [Termes IGN] réseau de capteurs Résumé : (auteur) [...] Conventional radio transmissions use a variety of modulation techniques but most involve varying the amplitude, frequency and/or phase of a sinusoidal carrier wave. But in the late 1960s, it was shown that one could generate a signal as a sequence of very short pulses, which results in the signal energy being spread over a large part of the radio spectrum. Initially called pulse radio, the technique has become known as impulse radio ultra-wideband or just ultra-wideband (UWB) for short and by the 1990s a variety of practical transmission and reception technologies had been developed. The use of large transmission bandwidths offers a number of benefits, including accurate ranging and that application in particular is being actively developed for positioning and navigation in environments that are challenging to GNSS such as indoors and built-up areas. In this month’s column, we take a look at the work being carried out in this area by a team of researchers at The Ohio State University. Numéro de notice : A2015-265 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT/SOCIETE NUMERIQUE Nature : Article DOI : sans En ligne : http://gpsworld.com/innovation-where-are-we/ Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76315 [article]