Accession Number : ADD009387

Title :   Physical Deterrent Barrier with Upward Looking Detection Sensor for Intruder Detection System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Karas,Nicholas V

Report Date : 27 Apr 1982

Pagination or Media Count : 7

Abstract : A physical deterrent barrier is utilized as an integral part of an intruder detection sensor that provides surveillance of intrusions in the air space over the barrier. The sensor is a corner reflecting antenna that is coextensive with and mounts on the top of the barrier and is integrated into a barbed wire topped chain link fence by arranging appropriately spaced parallel strands of barbed wire into a V configuration so as to effect an electrical corner reflector at the system operating frequency. (Author)

Descriptors :   *Patents, *Intrusion detectors, *Radar corner reflectors, Antenna apertures, Coaxial cables, Leakage(Electrical), Fences, Wire, Barriers, Surveillance, Air space, Monitors, Electromagnetic wave reflections

Subject Categories : Electrical and Electronic Equipment
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE