Microwave-based intrusion detection systems for vehicles

摘要

A micro-wave based intrusion detector system for use in a vehicle comprising: a microwave transmitter ( 10 ) for creating a volumetric microwave field ( 12 ) within a compartment of a vehicle to be protected; at least two microwave receivers ( 14 a, 14 b) adapted to monitor respective volumetric zones ( 16 a, 16 b) within the compartment which are predominantly different; and a signal processor means ( 22 ) for comparing the outputs of the microwave receivers ( 14 a, 14 b) in order to determine an intrusion.