H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/713 (2011.01) H03K 19/177 (2006.01)
Patent
CA 2618469
The invention concerns a method for real-time characterizing of frequency hopping networks which consists in converting the signal to be characterized into a digital signal, determining the frequency characteristics of the signal, including at least the following steps: searching for a frequency hop to be synchronized on the start of transmission; monitoring the frequency and searching for the central frequency Fc of the desired transmission channel; applying a delay on the samples digitized during the monitoring phase; determining the samples corresponding to the signal threshold from the delayed sample and the discovered central frequency.
Procédé et dispositif pour caractériser en temps réel des réseaux à saut de fréquence dans lequel on convertit le signal à caractériser en un signal numérique, on détermine les caractéristiques fréquentielles du signal, comportant au moins les étapes suivantes : on recherche un saut de fréquence pour se synchroniser sur le début d'émission, on suit la fréquence et on recherche la fréquence centrale Fc du canal d'émission souhaité, on applique un retard sur les échantillons numérisés pendant la phase de suivi, on détermine les échantillons correspondant au palier du signal à partir des échantillons retardés et de la fréquence centrale trouvée.
Brunet Daniel
Guignard Thierry
Houx Herve
Marks & Clerk
Thales
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