Analysis of the Response of an RF Intruder Protection System
Abstract
A phenomenological theory has been developed to describe the variation in received signal power observed when an intruder penetrated the detection zone of an RF individual resource protection sensor. The sensor consisted of a loop of leaky coaxial cable which acted as a distributed transmitting antenna encircling the resource. A centrally located monopole served as a receiving antenna. The theory assumes that the principal effect of an intruder is to scatter some energy out of the leaky cable field. The variation in received power was produced as a result of the interference between the scattered field and the quiescent field present in the absence of an intruder. The phase and amplitude of the scattered field changed with the intruder's position, giving rise to a characteristic interference pattern related to system and environment properties. Good agreement was obtained between the predicted and measured response of several system configurations. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1979
- Accession Number
- ADA072818
Entities
People
- J. L. Poirier
- Martin Kushner