Accession Number : ADD012395

Title :   Intrusion Barrier and Detection Apparatus.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Karas,Nicholas V

Report Date : 13 May 1986

Pagination or Media Count : 5

Abstract : A parted coaxial cable is positioned atop or wound around a coil of barbed wire and is coextensive therewith. Radio frequency energy applied to the cable is randomly dispersed about the exterior of the coil. Variations in the reflected energy caused by intrusion of the area adjacent the coil, including the areas above or beneath the coil, are processed by detection system signal processing equipment to determine the incidence and location of intrusion events. Keyword: Patents. (Author)

Descriptors :   *PATENTS, *INTRUSION DETECTORS, *SIGNAL PROCESSING, *COAXIAL CABLES, AREA SECURITY, DETECTORS, BARRIERS, INTRUSION, ENERGY, REFLECTION, COILS, WIRE, EXTERNAL, ELECTROMAGNETIC RADIATION, RADIOFREQUENCY

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE