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Collective detection: enhancing GNSS receiver sensitivity by combining signals from multiple satellites / Penina Axelrad in GPS world, vol 21 n° 1 (January 2010)

Public [article]  inGPS world > vol 21 n° 1 (January 2010) . - pp 58 - 64 Titre : Collective detection: enhancing GNSS receiver sensitivity by combining signals from multiple satellites Type de document : Article/Communication Auteurs : Penina Axelrad, Auteur ; J. Donna, Auteur ; M. Mitchell, Auteur ; S. Mohiuddin, Auteur Année de publication : 2010 Article en page(s) : pp 58 - 64 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement [Termes IGN] détection du signal [Termes IGN] fusion de données multisource [Termes IGN] géonavigateur [Termes IGN] GNSS assisté pour la navigation [Termes IGN] GPS-INS [Termes IGN] positionnement par GNSS [Termes IGN] qualité du signal [Termes IGN] traitement du signal Résumé : (Auteur) [...] Poor signal reception in other than open-sky environments is still a problem with conventional GPS receivers. However, extending signal integration times and using assisted-GPS techniques can give GPS some degree of capability to operate indoors and in other restricted environments, albeit typically with reduced positioning accuracy. An antenna with sufficient gain is needed and capable systems are available on the market. The pilot channels of modernized GNSS signals will also benefit signal acquisition and tracking in challenging environments. In this month's column, we look at a completely different approach to enhancing signal sensitivity. Rather than requiring each satellite's signal to be acquired and tracked before it can be used in the navigation solution, the new approach dubbed "collective detection" combines the received signal power from multiple satellites in a direct-to-navigation-solution procedure. Besides providing a quick coarse position solution with weak signals, this approach can be used to monitor the signal environment, aid deeply-coupled GPS/inertial navigation, and assist with terrain and feature recognition. Copyright Questex Media Group Numéro de notice : A2010-019 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30215 [article]

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