Electronic intruder detection system

Details Electronic intruder detection system Electronic intruder detection system

G - Physics

08

B

340/125, 343/49

G08B 13/22 (2006.01)

Patent

CA 1152196

ELECTRONIC INTRUDER DETECTION SYSTEM Abstract of the Disclosure An electronic detection system for detecting intruders employs a transmission line as a sensing element. In one embodiment the transmission line is a modified surface-wave transmission line, for example, a Goubau line, which is positioned about the perimeter of the area to be protected. An intruder in the field of the line causes an RF reflection back toward the source, which reflection may be detected by Doppler range-gating techniques. In other embodiments of the invention, the transmission line is an insulated, twisted wire pair or a deformable transmission line. In some instances, the transmission line may be replaced with an active or passive pressure line.

332738

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