Interface Radio SDR pour récepteur GNSS multi constellations pour la continuité de positionnement entre l’intérieur et l’extérieur

Hanen Mehrez 1, 2
2 TIPIC-SAMOVAR - Traitement de l'Information Pour Images et Communications
SAMOVAR - Services répartis, Architectures, MOdélisation, Validation, Administration des Réseaux
Abstract : In order to improve the availability of services provided by a receiver, designing a GNSS receiver to collect multiple signals from all bands simultaneously seems to be the solution. An optimized software-defined RF (SDR) sub-sampling architecture with an integral and reconfigurable RF stage and a digital processing stage with a software implementation of the baseband processing is defined for this GNSS receiver, while meeting the requirements GNSS standards specifications: cellular radio networks: GPS, Glonass, Galileo, Beidou. Many discrete components are selected after system dimensioning. Thus, experimental validation prototype is installed. Then we are interested in the characterization of the RF front-end in order to determine the limitations caused by the nonlinearity and to study the stability of the proposed prototype. A stage of digital processing of the IF signals, captured at the ADC output, is implemented under Matlab software. The acquisition of these data allows the determination of satellites visible at a given instant that allows us to determine a position
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Hanen Mehrez. Interface Radio SDR pour récepteur GNSS multi constellations pour la continuité de positionnement entre l’intérieur et l’extérieur. Réseaux et télécommunications [cs.NI]. Université Paris-Saclay; École supérieure des communications de Tunis (Tunisie), 2019. Français. ⟨NNT : 2019SACLL008⟩. ⟨tel-02186283⟩

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