Millimeter wave imaging system for security check and imaging method thereof

Abstract

The invention discloses a millimeter wave imaging system for security check and an imaging method thereof, wherein the system comprises a millimeter wave MMIC receiver array, a parabolic antenna, a two-dimensional mechanical scanning rotary table and a signal processing unit; the millimeter wave MMIC receiver array is connected with the signal processing unit, a feed source antenna of the millimeter wave MMIC receiver array is placed on the focal plane of the parabolic antenna, and both the millimeter wave MMIC receiver array and the parabolic antenna are fixed on the two-dimensional mechanical scanning rotary table. The imaging system of the invention has simple structure and high stability and can effectively detect hidden arms on a human body.

Description

Technical field [0001] The present invention belongs to the technical field of security inspection, and relates to an imaging system, in particular to a millimeter wave imaging system for security inspection; in addition, the present invention also relates to an imaging method of the millimeter wave imaging system described above. Background technique [0002] Millimeter wave imaging systems have applications in many fields, such as assisting aircraft landing in fog, detecting weapons hidden on people, and so on. At present, security inspection departments basically use X-ray security inspection equipment to detect contraband in luggage. Because X-ray ionization is harmful to the human body, it cannot detect contraband hidden on the human body. However, the use of metal detectors can only detect whether there are metal objects on the human body, but cannot detect the shape of the metal objects, and cannot determine whether they are safe metal objects. For example, there are meta...

AI Technical Summary

Problems solved by technology

At present, the security inspection department basically uses X-ray security inspection equipment to detect contraband in luggage. Because X-ray ionization is harmful to the human body, it cannot detect hidden contraband on people.

The use of metal detectors can only detect whether there are metal objects on the person, but cannot detect the shape of the metal object, and cannot judge whether it is a safe metal object.

For example, there are metal components in the prosthesis, and there may be guns hidden in it. Metal detectors cannot distinguish the metal in the prosthesis from the gun.

In addition, the metal detector needs the cooperation of the detection object, and the efficiency is low

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