Scanning method for human body security check system utilizing frequency division and space division

Abstract

The present invention discloses a scanning method combing a human body security check system with frequency division and space division to avoid opposite radiation interference. During scanning, the operating frequency of a detection signal provided by a first millimeter wave transceiver is different with that of a detection signal provided by a second millimeter wave transceiver at the same moment; and in addition, during scanning, the detection altitude of an antenna unit in a first millimeter wave switching antenna array is different with that of an antenna unit in a second first millimeter wave switching antenna array at any moment. The method avoids the opposite radiation interference in switching antenna arrays on both sides of a millimeter wave active three-dimensional holographic imaging human body security check system, so as to improve the level of imaging definition.

Description

technical field [0001] The invention relates to a human body security inspection system. More specifically, the present invention relates to a human body security inspection system and a scanning method based on three-dimensional holographic imaging of millimeter wave active high-speed cylindrical rotation scanning. Background technique [0002] The urgency of the international anti-terrorism form has put forward new requirements for human body security inspection. First, it is necessary to realize non-stripping 3D holographic imaging detection of objects covered by human clothing, so as to improve the efficiency of identifying suspicious objects; second, it is necessary to expand detection capabilities. , capable of detecting metal and non-metal items, including guns, knives, explosives, drugs, CDs, cash, liquids, chips, ceramics, etc.; hazard. [0003] The existing technical means that can be used for human body security inspection include: metal detection, X-ray imaging...

AI Technical Summary

Problems solved by technology

[0009] However, the existing security inspection systems are all single-switch antenna arrays. Using a single switch array antenna to scan and detect persons to be inspected prolongs the scanning time of persons to be inspected and reduces security inspection efficiency.

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