| 摘要 |
<p>A system 100 for sensing disruption to a signal propagating along a guiding medium 101 for guiding electromagnetic surface waves. The system comprises a guiding medium for guiding electromagnetic surface waves; a transmitter 105 arranged to transmit electromagnetic surface waves along the guiding medium, and a receiver 108 arranged to receive electromagnetic surface waves transmitted along the guiding medium. The receiver also measure changes to a signal transmitted via the guiding medium in order to sense disruption to said signals based on said measured changes. Another aspect relates to receiving electromagnetic waves scattered from the guiding medium as a result of disruption to a surface wave passing over the guiding medium. The disruption may be caused by a change in a surface to which the guiding medium is attached. The guiding medium may be a dielectric, dielectric coated conductor or a corrugated surface.</p> |
