Patent ID: 7064701

Claim:
An object detection system for detecting objects carried by a person, the system comprising: radar transceivers that are each configured and positioned to direct a radar signal at a person and to detect a portion of the radar signal reflected by the person; and a processor connected to the radar transceivers and operable to: process the portions of the radar signals detected by the radar transceivers to conduct a test to determine whether the person is carrying an object to be detected, in which a first characteristic of a first dielectric constant associated with the person is determined from the portions of the radar signals detected by the radar transceivers and a second characteristic of a second dielectric constant associated with the object to be detected is determined from the portions of the radar signals detected by the radar transceivers, and analyze the portions of the radar signals in comparison with pre-determined types of items, and, based on the comparison, to output an indication of a detected object.