Interference suppression method and device, in reception,...

Details Interference suppression method and device, in reception,... Interference suppression method and device, in reception,...

H - Electricity

04

B

H04B 7/08 (2006.01) G01S 1/00 (2006.01) G01S 5/14 (2006.01) G01S 7/36 (2006.01) H04K 3/00 (2006.01)

Patent

CA 2459369

The invention relates to an interference suppression method and device, in reception, for a wideband radio signal. The invention involves the use of spatial filtering taking into account different interfered versions of the signal delivered by parallel processing chains which are believed to have the same transfer function, such as, for example, the individual processing chains associated with the radiant elements of an array antenna that receives GPS navigation satellite signals. The inventive method consists in performing an automatic equalisation (4d) which reduces the disparities between the processing chains (2a to 2g) regardless of whether said disparities are original or due to drifts over time.Said automatic equalisation is performed at the outputs of the processing chains (2a to 2g) before the spatial interference suppression filtering (3) and it is carried out by means of a local test signal generator (5).

L'invention concerne l'antiparasitage, en réception, d'un signal radioélectrique à large bande par un filtrage spatial prenant en compte différentes versions parasitées du signal délivrées par des chaînes de traitement parallèles supposées avoir la même fonction de transfert, comme par exemple, les chaînes individuelles de traitement associées aux éléments rayonnants d'une antenne réseau de réception de signaux de satellites de navigation GPS. Elle consiste à réaliser, au niveau des sorties des chaînes de traitement (2a a 2g), avant le filtrage spatial de déparasitage (3), une égalisation automatique (4d) réduisant les disparités entre chaînes de traitement (2a a 2g), que ces disparités soient d'origine ou proviennent de dérivés dans le temps, cette égalisation automatique étant menée à terme au moyen d'un générateur local (5) de signal de test.

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