A sparse array three-dimensional imaging security inspection device and method

Abstract

A sparse array three-dimensional imaging security inspection device and method, the present invention relates to a sparse array three-dimensional imaging security inspection device and method, which includes: a sparse antenna array, a radio frequency transceiver front end, a signal processing module, a display module and one or more manual processing seats . Under the control of the signal processing module, the position information of the human body is determined by rough scanning, and then according to the position information of the human body, the device is controlled by the signal processing module to enter the fine scanning mode. In the fine scanning mode, the signal processing module sends scanning instructions, and the RF transceiver front-end generates and transmits RF signals from the sparse antenna array. After the RF signal interacts with the target, the echo signal reflected by the target is received by the sparse antenna array and transmitted by the sparse antenna array. After the front-end processing of the radio frequency transceiver, it is transmitted to the signal processing module, and after analog-to-digital conversion in the signal processing module, and after calibration and imaging processing, the imaging processing results are sent to the detection module and the manual processing seat respectively. Finally, through the combination of automatic detection and manual processing of seats, it is determined whether the inspected person is carrying dangerous goods.

Description

technical field [0001] The invention relates to a sparse array three-dimensional imaging security inspection device and method, and relates to the field of millimeter wave security inspection imaging. Background technique [0002] In recent years, terrorist attacks at home and abroad have occurred frequently, and there are more and more types of dangerous goods. Traditional security inspection methods can no longer meet the needs of the current security inspection market. Traditional metal detectors can only detect metal contraband, and are powerless against plastic bombs and ceramic knives; although X-ray security inspection equipment can detect all prohibited items, it poses a certain threat to human health and is not the best security method. At present, millimeter-wave 3D imaging technology is an effective method to replace traditional security inspection methods. L3's rotary scanning 3D imaging system, RS's QPS 3D imaging system, and Smith's reflective antenna array im...

AI Technical Summary

Problems solved by technology

At present, most of the millimeter-wave security inspection equipment on the market is a cooperative security inspection equipment, which cannot scan and image the human body in all directions from head to toe, and does not compensate for the slight shaking of the human body, which may easily cause partial defocus of the human body

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