G - Physics – 01 – S
Patent
G - Physics
01
S
G01S 13/87 (2006.01) G01S 7/292 (2006.01)
Patent
CA 2446404
A system and method for mitigating co-channel interference is disclosed. A radar system detects targets from received signals at an antenna array. The received signals include direct signals and target signals transmitted from remote transmitters. An antenna array receives the signals. A signal processing system is coupled to the antenna array to perform processing operations on the received signals. The processing system includes a primary cancellation component and a secondary cancellation component. A primary illuminator signal is cancelled from the received signals by the primary cancellation component. An adaptive beam former obtains a secondary illuminator signal from the received signals. A reference regenerator regenerates the secondary illuminator signal. An adaptive cancellation filter removes noise from the secondary illuminator signal. The secondary cancellation component mitigates co-channel interference by canceling the secondary illuminator signal from the received signals.
L'invention concerne un système et un procédé de réduction de brouillage dans le même canal. Un système de radar détecte des cibles provenant de signaux reçus par un assemblage d'antenne. Les signaux reçus comprennent des signaux directs et des signaux cibles transmis provenant d'émetteurs à distance. Un assemblage d'antenne reçoit les signaux. Un système de traitement de signal est couplé afin de réaliser des opérations de traitement sur les signaux reçus. Le système de traitement comprend un élément principal de suppression et un élément secondaire de suppression. Un signal d'illumination principal est supprimé des signaux reçus par l'élément principal de suppression. Un formateur de faisceau adaptatif obtient un signal d'illumination secondaire provenant des signaux reçus. Un régénérateur de référence régénère le signal d'illumination secondaire. Un filtre de suppression adaptatif supprime le bruit du signal d'illumination secondaire. L'élément secondaire de suppression réduit le brouillage dans le même canal en supprimant le signal d'illumination secondaire des signaux reçus.
Lockheed Martin Corporation
Ridout & Maybee Llp
LandOfFree
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