Proximity fuze

F - Mech Eng,Light,Heat,Weapons – 42 – C

Patent

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Details

F42C 13/04 (2006.01) G01S 13/34 (2006.01)

Patent

CA 2356266

A proximity fuze for use in a tube launched projectile carrying a payload, comprising oscillator means for generating a radio frequency signal which has a varying frequency, a single antenna means for transmitting the radio frequency signal and for receiving an echo of the radio frequency signal, signal processing means for generating a range signal corresponding to the time delay between the transmission of the radio frequency signal and the receipt of the echo signal, means for comparing the range signal with a reference signal and depending on the result of the comparison generating an activation signal for activating the payload, wherein a directional coupling means is used for coupling the radio frequency signal from the oscillator means to the antenna means and to the signal processing means and for coupling the echo signal from the antenna means to the signal processing means.

L'invention porte sur une fusée de proximité destinée à être utilisée dans un projectile lancé par tube portant une charge utile. La fusée de proximité comprend un oscillateur pour générer un signal radiofréquence à fréquence variable, une antenne pour transmettre le signal radiofréquence et pour recevoir un écho du signal radiofréquence, un processeur de signal pour générer un signal de portée correspondant au retard systématique entre la transmission du signal radiofréquence et la réception du signal d'écho. La fusée de proximité comprend en outre un moyen pour comparer le signal de portée avec un signal de référence et, en fonction du résultat de cette comparaison, générer un signal d'activation pour activer la charge utile, un coupleur directif étant utilisé, d'une part pour coupler le signal radiofréquence de l'oscillateur à l'antenne et au processeur de signal, d'autre part pour coupler le signal d'écho de l'antenne au processeur de signal.

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