Noise resistant zone penetration detection system

Communications: radio wave antennas – Antennas – Balanced doublet - centerfed

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G01S 904

Patent

active

040315347

ABSTRACT:
A system for detecting the existence of a projectile within a penetration ne of a target and providing a score indication for each projectile penetrating that zone. The system utilizes a doppler signal generator, a doppler cycle detector and an intercept detector for indicating penetration. A voltage controlled oscillator in the target area provides signal information for transmission by FM telemetry. The unit for scoring the number of intercepts utilizes an FM telemetry receiver for demodulating the signal information. A hit indicator produces a score indication pulse in a manner which is highly resistant to background noise. A score indication device, controlled by the control pulse, counts the score indications and signifies intercepts by an electromechanical counter, audible signals and/or a light display.

REFERENCES:
patent: 3168735 (1965-02-01), Cartwright
patent: 3289204 (1966-11-01), Murray et al.
patent: 3611373 (1971-10-01), Cartwright

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