Sparse array three-dimensional imaging security check device and method

Abstract

The invention discloses a sparse array three-dimensional imaging security check device and method, and relates to the sparse array three-dimensional imaging security check device and method, and the device comprises a sparse antenna array, a radio frequency receiving and transmitting front end, a signal processing module, a display module, and one or more manual processing seats. Under the controlof the signal processing module, the position information of the human body is determined through coarse scanning, and then the device is controlled by the signal processing module to enter a fine scanning mode according to the position information of the human body. Under the fine scanning mode, the signal processing module sends a scanning instruction, the radio frequency transmit-receive frontend generates and transmits a radio frequency signal through the sparse antenna array, and after the radio-frequency signal interacts with the target, echo signals reflected by a target are receivedby the sparse antenna array, processed by the radio frequency transmit-receive front end, transmitted to the signal processing module, subjected to analog-to-digital conversion in the signal processing module, calibrated and imaged, and then imaging processing results are sent to the detection module and the manual processing seat respectively. And finally, whether the detected person carries dangerous goods or not is determined in a mode of combining automatic detection and manual seat processing.

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

Images