Real beam electric scanning fast imaging human body security inspection method and a security inspection system

Abstract

The invention discloses a real beam electric scanning fast imaging human body security inspection method and a security inspection system. The system comprises multiple wide beam transmitting antennas, a real beam electric scanning receiving array antenna, a position sensor, a multichannel millimeter wave transceiver assembly, a data processing module and a display device. The multiple transmitting antennas are used to transmit millimeter wave signals to cover an inspected human body; with the help of the collected position information, through controlling the phase of each unit of the receiving array antenna, each receiving array antenna fast completes three-dimensional receiving scanning on a corresponding area with low-resolution near field focusing beams; and high-resolution imaging isthen realized through multichannel digital beam synthesis signal receiving and processing, and thus, fast high-resolution security inspection imaging is completed. According to the security inspection imaging system provided in the invention, no mechanical scanning device exists, the imaging algorithm is simple, the contradiction between the high-resolution real beam imaging and the beam scanningtime is solved, the security inspection system is easy to arrange, and fast-passing human body security inspection can be realized.

Description

technical field [0001] The invention belongs to the technical field of security inspection, and in particular relates to a human body security inspection method and a security inspection system for real-beam electronic scanning rapid imaging. Background technique [0002] In recent years, violent crimes and terrorist incidents have occurred frequently at home and abroad, and the issue of public security has attracted widespread attention from the international community. Attacks at this stage mainly occur in densely populated public places such as airports, subways, stations, and squares. Therefore, the issue of security inspection in public places has gradually become the focus of social attention, and higher requirements have been put forward for the accuracy, real-time performance, intelligence and environmental applicability of the security inspection system. [0003] Human body security inspection has always been faced with some technical difficulties. Traditional secu...

AI Technical Summary

Problems solved by technology

[0005] At present, the mainstream millimeter-wave security imaging systems in the world still have problems of varying degrees: for example, the Provision series of the American L3 company requires mechanical scanning and the imaging speed is slow; the QPS system of the German Rohde&Schwarz company has high costs and a large signal processing load , time is long; Smith’s Eqo requires the inspected person to rotate a circle in front of the imaging system, and the imaging speed is relatively slow

At present, these problems make the existing security inspection imaging system unable to meet the domestic high-throughput security inspection needs

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