Detector of objects by microwave frequency echo analysis

Details Detector of objects by microwave frequency echo analysis Detector of objects by microwave frequency echo analysis

2007-08-21

2007-08-21

Benson, Walter (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Distributive type parameters

C324S637000

Reexamination Certificate

active

11435281

ABSTRACT:
The field of the invention is that of devices for detecting non-metallic objects concealed on human subjects. These devices are more particularly dedicated to the surveillance and protection of reserved access areas, such as airport areas. The device according to the invention comprises a portable detector comprising a transmitter and a receiver of microwave frequency signals disposed in an enclosure of chaotic geometry including a plurality of measurement holes. The microwave frequency signal measured by this detector depends on the nature of the objects disposed under the holes. A processing device linked to this detector is used to correlate the measured signals with prerecorded signals. When the correlation exceeds a certain threshold corresponding to the presence of suspect objects, an alarm is generated.

REFERENCES:
patent: 6353224 (2002-03-01), Singlair et al.
patent: 6359582 (2002-03-01), MacAleese et al.
patent: 6777684 (2004-08-01), Volkov et al.
patent: 6856271 (2005-02-01), Hausner
patent: 6937182 (2005-08-01), Lovberg et al.
patent: 6950054 (2005-09-01), Steinway et al.
patent: 7119731 (2006-10-01), Fleisher

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