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Periodic double array channel type millimeter wave active three-dimensional motion imaging system and method

A three-dimensional motion and imaging system technology, applied in radio wave measurement systems, radio wave reflection/re-radiation, instruments, etc., can solve the problems of how fast coherent accumulation is extremely difficult, and improve electromagnetic wave coverage and imaging area. The effect of doubling and reducing power loss

Pending Publication Date: 2017-08-04
JILIN UNIV
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Problems solved by technology

For short-range human targets, the complex movements of limbs and torso make it extremely difficult to accumulate coherence between multiple snapshots, which is the biggest reason why active millimeter-wave human body imagers cannot complete moving target imaging

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0050] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0051] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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Abstract

The present invention discloses a periodic double array channel type millimeter wave active three-dimensional motion imaging system and a method. The system comprises two identically structured planar arrays. Each array is formed through the periodic unfolding of sub-arrays of a specific structure, and a middle channel region is used for a to-be-imaged human body to pass through. The invention is characterized in that: based on the frequency-division and multiple-input / multiple-output technique and the single snapshot imaging technique are integrated, so that the sampling speed is greatly improved. The real-time three-dimensional imaging function for a moving human body is realized. The channel type double-array imaging function ensures the electromagnetic wave coverage capability and effectively doubles the imaging area. Unit arrays composed of periodic sub-arrays work alternately, so that the channel paving flexibility is improved. Meanwhile, the whole-process image resolution of a to-be-tested target in an entire channel is ensured not to change along with the space. Moreover, the subsequent image identification or the subsequent multi-image fusion treatment is facilitated.

Description

technical field [0001] The invention relates to a periodic dual array channel millimeter wave active three-dimensional motion imaging system and method. Background technique [0002] Active millimeter wave imager is an important human body security inspection equipment. Unlike X-rays, millimeter wave technology is non-ionizing radiation, which has the ability to penetrate ordinary clothes, plastics, ceramics and other materials without causing harm to the human body. And it can effectively distinguish skin from prohibited items such as metals and explosives; electromagnetic imaging technology is used to complete three-dimensional image reconstruction, which has a higher resolution than microwave imaging. [0003] The passive millimeter-wave imager adopts a simpler sampling method and fully utilizes the electromagnetic radiation of the target itself. For example, Nuctech Technology Co., Ltd. proposed a pass-through human safety inspection system with the patent number "CN2011...

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Application Information

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IPC IPC(8): G01S13/89
CPCG01S13/89
Inventor 常天英郭企嘉王忠民崔洪亮
Owner JILIN UNIV
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