E-waveband millimeter wave imaging security inspection radar system

Abstract

The invention provides an E-waveband millimeter wave imaging security inspection radar system. The system contains a plurality of data acquisition subsystems, comprehensive signal processing subsystems, display and control subsystems, calibration subsystems, and power supply subsystems; the plurality of data acquisition subsystems are arranged around an object to be detected, and are used for generating E-waveband millimeter waves to be transmitted to the object to be detected and acquiring reflection echo data of the object to be detected; the comprehensive signal processing subsystems are electrically connected with the data acquisition subsystems and are used for performing real-time imaging processing on data acquired by the data acquisition subsystems; the display and control subsystems are electrically connected with the comprehensive signal processing subsystems, and are used for performing target detection and identification processing on imaging results of the comprehensive signal processing subsystems, and displaying the results to a user; the calibration subsystems are used for correcting multi-channel amplitude phases of arrays in the data acquisition subsystems; and the power supply subsystems are electrically connected with the data acquisition subsystems, the comprehensive signal processing subsystems and the display and control subsystems and are used for providing electric power. According to the system, high-speed and reliable imaging can be achieved in a high-human-flow-rate and high-density crowd, so that the cost performance of the system is greatly improved, and the system has great advantages in multiple aspects of complexity, cost performance, flexibility and the like.

Description

technical field [0001] The invention relates to an E-band millimeter-wave imaging security inspection radar system. Background technique [0002] Millimeter-wave imaging security radar is a new type of security inspection equipment that uses scattered echoes from detected objects to achieve high-resolution perspective imaging, and uses millimeter-wave images to detect and identify hidden dangerous goods. At present, there are mainly two millimeter-wave imaging security radars, K-band and E-band. [0003] Traditional active millimeter-wave imaging security radars mostly use multiple two-dimensional sparse MIMO arrays or switch linear array scanning schemes, and it is difficult to strike a balance in terms of system complexity, system cost performance, and system flexibility. Although the two-dimensional sparse MIMO array scheme has flexible system, fast data acquisition, and superior performance, it is complex and low cost performance; while the switch array scanning scheme ...

AI Technical Summary

Problems solved by technology

[0003] Traditional active millimeter-wave imaging security radars mostly use multiple two-dimensional sparse MIMO arrays or switch linear array scanning schemes, and it is difficult to achieve a balance in terms of system complexity, system cost performance, and system flexibility.

Although the two-dimensional sparse MIMO array solution has flexible system, fast data acquisition, and superior performance, it is complex and has low cost performance; while the switch array scanning solution has a simple system and high cost performance, but slow data acquisition and inflexible system

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