Method and device for calibrating an array antenna

H - Electricity – 01 – Q

Patent

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H01Q 3/26 (2006.01)

Patent

CA 2699815

The invention relates to a method for calibrating an array antenna, comprising generating a test signal by using a pseudo-random sequence assigned to a certain branch, adding the generated test signals in the different branches of the array to a useful signal, which leads to a summed signal to be emitted via the array antenna, receiving the summed signal with a receiver antenna, correlating the received summed signal with a replica of the pseudo- random sequence identical to this used for the generation of the test signal, estimating the characteristics of the branch by processing the correlation result, and calibrating the antenna based on the estimated characteristics.

L'invention concerne un procédé pour étalonner une antenne réseau, ce procédé comprenant la génération d'un signal de test au moyen d'une séquence pseudo-aléatoire attribuée à une certaine section, l'ajout à un signal utile des signaux de test générés, dans les différentes branches du réseau, ce qui entraîne l'émission d'un signal d'addition par l'intermédiaire de l'antenne réseau, la réception du signal d'addition par une antenne de réception, la corrélation du signal d'addition reçu avec une réplique de la séquence pseudo-aléatoire identique à celle utilisée pour la génération du signal de test, l'estimation des caractéristiques de la section par le traitement du résultat de corrélation, et l'étalonnage de l'antenne sur la base des caractéristiques estimées.

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