Accession Number : ADD012281

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 : 18 Feb 1986

Pagination or Media Count : 5

Abstract : A ported coaxial cable is positioned within a coil of barbed wire and is coextensive therewith Radio frequency energy applied to the cable is confined within the tubular volume of the coil. Variations in the reflected energy caused by physical disturbances of the coil are processed by detection system signal processing equipment to determine the incidence and location of intrusion events. (Author)

Descriptors :   *PATENTS, *INTRUSION DETECTION, *FENCES, COAXIAL CABLES, PORTS(OPENINGS), LEAKAGE(ELECTRICAL), RADIO WAVES, ELECTROMAGNETIC WAVE REFLECTIONS, WIRE, COILS, SIGNAL PROCESSING

Subject Categories : Magnetic & Electric Fld Detection & Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE