Resilient antenna disturbance detector

摘要

A resilient antenna disturbance detector is provided. A signal generator generates an unclonable integrity test signal. The antenna reflects a signal in response to the integrity test signal. A comparator determines whether the reflected signal matches the integrity test signal and a controller signals the disturbance of the antenna to a monitoring device if the energy level of the reflected signal is greater than a predetermined threshold and the reflected signal matches the integrity test signal. The detector provides the advantage of preventing an external receiver and transmitter from predicting and transmitting the integrity test signal to the antenna to interfere with disturbance detection. Also provided is a security system with resilient antenna disturbance detection.

主权项

1. An antenna disturbance detector for signaling a disturbance of an RF communication antenna to a monitoring device, said antenna for internally reflecting a signal in response to an unclonable integrity test signal having unpredictable detectable characteristics, said antenna disturbance detector comprising:
a signal generator for generating said unclonable integrity test signal; said antenna being configured to simultaneously receive an external signal, said received external signal being added into said reflected signal; a comparator for determining whether said reflected signal including said received external signal matches said integrity test signal; and a controller for signaling said disturbance of said antenna to said monitoring device if the energy level of said reflected signal is greater than a predetermined threshold and said comparator determines that said reflected signal matches said unclonable integrity test signal.