Line Intrusion Detector.

摘要

Several radiating line configurations were experimentally evaluated for use in a line-type intrusion detection system. The types of radiating lines examined were Radiax cable, Goubau line and television twin lead (300ohm). Measurements of dissipative and radiation losses were made at 140and 915MHz and these data are presented,together with theoretical considerations related to a line intrusion detection system. (Author)