Airborne collision avoidance system and method of...

G - Physics – 08 – G

Patent

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G08G 5/04 (2006.01) G01S 13/74 (2006.01) G01S 13/76 (2006.01) G01S 13/78 (2006.01) G01S 13/93 (2006.01)

Patent

CA 2472306

An aircraft system (10) and method (400, 500) for determining when to attempt acquisition of an intruder (210, 220, 226) for active tracking. A link reliability score (356) associated with the intruder (210, 220, 226) is adjusted based upon the signal strength of transmissions, the frequency of the transmissions, and the number of previous attempts to acquire the intruder (210, 220, 260) for active tracking. Once a given threshold link validity value (324) is reached by the link reliability score (356), an RF link is predicted to be reliable and the aircraft system (100) attempts to acquire the range of the intruder aircraft (210, 220, 260) for active tracking. A traffic adivsory (14), in accordance with the track, alerts a pilot (230) to avoid collision with the intruder aircraft (210, 220, 260).

L'invention concerne un système (100) et un procédé (400, 500) pour aéronef, permettant de déterminer à quel moment tenter une acquisition d'intrus (210, 220, 260) aux fins de poursuite active. Un score de fiabilité de liaison (356) associé à l'intrus (210, 220, 260) est retouché en fonction de l'intensité des signaux de transmission, de la fréquence des émissions, et du nombre de tentatives antérieures d'acquisition d'intrus (210, 220, 260) aux fins de poursuite active. Lorsqu'un seuil donné de valeur de validité de liaison (324) est atteint, au score de fiabilité de liaison (356), on est en présence d'une prévision de liaison RF fiable, et le système (100) tente de procéder à l'acquisition de la position de l'aéronef intrus (210, 220, 260) aux fins de poursuite active. Une unité d'instruction de trafic (14) fournit une instruction sur la base de la poursuite, alertant le pilote (230), qui peut ainsi éviter d'entrer en collision avec l'aéronef intrus (210, 220, 260).

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