Alarm sensor, in particular for a target tracking apparatus

Details Alarm sensor, in particular for a target tracking apparatus Alarm sensor, in particular for a target tracking apparatus

G - Physics

01

S

G01S 13/66 (2006.01) F41H 11/02 (2006.01) G01S 7/02 (2006.01) G01S 13/34 (2006.01)

Patent

CA 2240355

A pseudo-noise-modulated spread spectrum is irradiated undirectedly - or, encoded by different modulation, into mutually displaced spatial sectors - and the energy (20) received after reflection at a potential target (13) is cross-correlated, using the pseudo-noise code which is predetermined at the transmission end, in order to provide a spherical monitoring effect which is continuous but which cannot be located in respect of its origin, to provide a warning in particular for marine craft, land vehicles and aircraft against an attacking guided missile as the target (13) to be repelled, and in order to be able to transfer to a target tracker (12) distance and speed information obtained from the correlation product, with the alarm signal, if that alarm sensor (11) is not itself also used as the tracking sensor.

Des signaux à spectre étalé modulés par pseudo-bruit sont rayonnés indirectement - ou codés, par modulation différente, dans des secteurs spatiaux à déplacement mutuel - et l'énergie (20) reçue après réflexion à une cible potentielle (13) est inter-correlée au moyen du code à pseudo-bruit, qui est prédéterminé à l'extrémité émettrice, afin de produire un effet de contrôle sphérique continu mais non localisable quant à son origine, permettant de mettre en garde en particulier les bateaux, les véhicules terrestres et les avions contre un missile guidé d'attaque constituant la cible (13) à viser, et afin de pouvoir transmettre à un suiveur de cible (12) les données de distance et de vitesse tirées du produit de corrélation, avec le signal d'alarme, si le capteur d'alarme en question (11) n'est pas lui-même utilisé également comme capteur de poursuite.

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