A 3D Imaging System Based on Reconfigurable Electromagnetic Surface Array
An electromagnetic surface, three-dimensional imaging technology, applied in the field of security inspection, can solve the problem that the cost of the millimeter wave imaging system is difficult to meet the needs of fast-passing human security inspection in crowded areas, and achieve the effect of reducing the number of spatial scans and fast scanning and imaging.
Active Publication Date: 2022-04-12
BEIJING INSTITUTE OF TECHNOLOGYGY
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[0007] However, the existing millimeter-wave imaging systems mentioned above are difficult to meet the needs of fast-passing human body security inspections in densely populated areas in terms of processing algorithms and system costs.
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[0040] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
[0041] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.
[0042] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific implementation manners. It will be understood by those skilled in the art that the present disclosure may be practiced without some of the specific details. In some instances, methods, means, componen...
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The three-dimensional imaging system of the reconfigurable electromagnetic surface array of the present disclosure is used to generate the millimeter wave excitation signal through the millimeter wave signal generation unit; the reconfigurable electromagnetic surface emitting array is used to transmit and modulate the millimeter wave excitation signal, and the modulated millimeter wave The excitation signal is focused to the corresponding position of the target area; the reconfigurable electromagnetic surface receiving array is used to receive the millimeter wave echo signal of the target area; the beam scanning control unit is used to send the dynamics of the millimeter wave to the reconfigurable electromagnetic surface transmitting array and receiving array Instructions and scanning synchronization instructions, synchronously adjust the dynamic phase of the reconfigurable electromagnetic surface transmitting array and receiving array; the data processing unit is used to store and process the millimeter wave echo to obtain the three-dimensional imaging of the target area. It can reduce the number of space scans by several orders of magnitude, integrate the advantages of sparse array and real beam imaging, and realize the rapid security check when there is a large flow of people, and quickly scan and image the human body.
Description
technical field [0001] The disclosure belongs to the technical field of security inspection, in particular to a three-dimensional imaging system based on a reconfigurable electromagnetic surface array. Background technique [0002] The issue of public safety is the focus of extensive attention of the international community. Crowded places such as airports, subways, stations, and squares are the main places where attacks occur, so higher requirements are placed on the accuracy, real-time performance, intelligence, and environmental applicability of the security inspection system. [0003] In recent years, millimeter-wave security inspection imaging technology is a new type of security inspection technology. It has the advantages of high security, good penetration, and differences in electromagnetic scattering characteristics of different materials. It has become the mainstream development direction of human body security inspection technology. [0004] Millimeter wave secur...
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IPC IPC(8): G01S13/89G01S13/88G01V8/00G01V8/20
CPCG01S13/89G01S13/887G01V8/005G01V8/20
Inventor 李世勇赵国强王硕光敬汉丹孙厚军
Owner BEIJING INSTITUTE OF TECHNOLOGYGY