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U-SBAS: A universal multi-SBAS standard to ensure compatibility, interoperability and interchangeability / Mohamed Sahmoudi (2010)  

Public Titre : U-SBAS: A universal multi-SBAS standard to ensure compatibility, interoperability and interchangeability Type de document : Article/Communication Auteurs : Mohamed Sahmoudi, Auteur ; Jean-Luc Issler, Auteur ; Felix Perozans, Auteur ; Youssef Tawk, Auteur ; Aleksandar Jovanovic, Auteur ; Cyril Botteron, Auteur ; Pierre-André Farine, Auteur ; Landry René, Auteur ; Véronique Dehant, Auteur ; Alessandro Caporali, Auteur ; Serge Reboul, Auteur ; Pascal Willis , Auteur Editeur : New York : Institute of Electrical and Electronics Engineers IEEE Année de publication : 2010 Conférence : NAVITEC 2010, 5th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing 08/12/2010 10/12/2010 Noordwijk Pays-Bas Proceedings IEEE Importance : 18 p. Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale [Termes IGN] interopérabilité [Termes IGN] standard [Termes IGN] système d'extension Résumé : (auteur) Several regional augmentation GNSS systems (like SBAS) are already fully operational and other are under development with new frequencies and signals on the way. Therefore, it becomes imperative to guarantee for all GNSS users the compatibility, interoperability and interchangeability between all these systems. The goal is to ensure that the user's multi-mode receiver can choose and mix signals from different GNSS and SBAS systems to achieve more availability, accuracy and robustness. Attaining that objective will require agreements on frequency plans and signal designs, as well as other details including means to ensure interoperability of system times and geodetic reference systems. This paper suggests a Universal-SBAS (U-SBAS) standard, compatible with all the existing and planned regional GNSS systems (and their evolutions) in the world, like IRNSS, QZSS, PCW, BEIDOU-1, WAAS, EGNOS, SDCM, GAGAN, MSAS. The proposed worldwide multimodal U-SBAS standard carries additional channels (signals and messages) to cover the non-aeronautical specific Safety-of-Life (SoL) services, and also High Precision Positioning Services (HPPS), Position Velocity Time (PVT), authentication services, safety services, scientific application services, High Precision Timing Services (HPTS), etc. U-SBAS is designed to be fully interoperable with the current SBAS standards and to allow significant performance and service improvements in operational, scientific and/or security areas. Finally usage examples of the proposed standard are given for different types of applications such as science, aviation, precise point positioning, timing, security, robust positioning, maritime and reflectometry. Numéro de notice : C2010-074 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1109/NAVITEC.2010.5708076 En ligne : https://doi.org/10.1109/NAVITEC.2010.5708076 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102057

Probabilities and Multipath : Multipath mitigation techniques using maximum-likelihood principle / Mohamed Sahmoudi in Inside GNSS, vol 3 n° 8 (November - December 2008)    

Public [article]  inInside GNSS > vol 3 n° 8 (November - December 2008) . - 6 p. ; pp 24 - 29 Titre : Probabilities and Multipath : Multipath mitigation techniques using maximum-likelihood principle Type de document : Article/Communication Auteurs : Mohamed Sahmoudi, Auteur ; R. Landry, Auteur Année de publication : 2008 Article en page(s) : 6 p. ; pp 24 - 29 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale [Termes IGN] classification par maximum de vraisemblance [Termes IGN] correction du signal [Termes IGN] correction du trajet multiple [Termes IGN] récepteur GNSS [Termes IGN] trajet multiple Résumé : (Auteur) With increased computer power, receiver designers can now make use of complex algorithms and computationally intense solutions to reduce the bad effects of multipath - reflected signals - on GNSS equipment. The authors describe a category of multipath mitigation techniques based on principles of maximum-likelihood (ML) estimation - including a new variation of their own - that can improve receiver performance. Numéro de notice : A2008-681 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans En ligne : http://www.insidegnss.com/node/921 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33445 [article]

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