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A short-range three-dimensional imaging device and imaging method based on mimo system

A three-dimensional imaging and short-range technology, which is used in measurement devices, radio wave reflection/re-radiation, instruments, etc., can solve problems such as less involving MIMO system, and achieve the effects of improving real-time processing, performance improvement, and novel system

Active Publication Date: 2019-01-25
THE FIRST RES INST OF MIN OF PUBLIC SECURITY +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0002] In recent years, both at home and abroad are competing to use millimeter-wave technology to detect hidden objects in the human body. Various millimeter-wave detection methods emerge in an endless stream. Short-range millimeter-wave active imaging is still in its infancy. There are no mature products in the domestic market. The detection principle mainly includes synthetic aperture. Three-dimensional scanning detection system and focal plane detection system, etc., but the current human short-range millimeter wave detection system rarely involves the detection method of the MIMO system

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  • A short-range three-dimensional imaging device and imaging method based on mimo system
  • A short-range three-dimensional imaging device and imaging method based on mimo system
  • A short-range three-dimensional imaging device and imaging method based on mimo system

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Embodiment

[0107] Below by specific embodiment the present invention is further described, the experimental prototype design of the present invention adopts the synchronous transmitter that 4 transmission channels are formed, and sampling interval is 0.007m, and detection range 1m*2m, uses the reliability of matlab software verification algorithm again, matlab The calculated structure diagram is as follows Figure 4 As shown, the target object is human-shaped point data, and the program modules are divided into system structure modeling, signal emission source establishment, multidimensional Fourier transform, frequency domain (wavenumber domain) matched filtering, stolt interpolation, multidimensional inverse Fourier transform and object There are seven imaging modules in total, and the imaging results are as follows Figure 5 , Figure 6 and Figure 7 As shown, the three-dimensional holographic images of the target are displayed from different viewing angles, which not only present t...

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Abstract

The invention discloses an apparatus for short range 3D imaging apparatus based on a MIMO system and an imaging method thereof. The apparatus includes an N x N millimeter wave receiver area array and a synchronous transmitter. The N x N millimeter wave receiver area array is composed of N millimeter wave receivers. The synchronous transmitter is composed of M transmitting antennas, wherein the M transmitting antennas are distributed in the periphery of the N x N millimeter wave receiver area array and are mutually arranged in a same plane. The beneficial effects of the invention are: a novel type of millimeter wave human body detection method for short range 3D imaging is proposed based on the MIMO system and the imaging method has the characteristics of high resolution ratio and excellent instantaneity.

Description

technical field [0001] The invention relates to the fields of radar imaging and image processing, in particular to a short-range three-dimensional imaging device and imaging method based on the MIMO system. Background technique [0002] In recent years, both at home and abroad are competing to use millimeter-wave technology to detect hidden objects in the human body. Various millimeter-wave detection methods emerge in an endless stream. Short-range millimeter-wave active imaging is still in its infancy. There are no mature products in the domestic market. The detection principle mainly includes synthetic aperture. Three-dimensional scanning detection system and focal plane detection system, etc., but the current human short-range millimeter wave detection system rarely involves the detection method of the MIMO system. [0003] The MIMO system radar is a new system radar developed in the radar field in recent years. It adopts a multi-antenna structure at both the transmitting...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/89G01S7/42
CPCG01S7/42G01S13/89
Inventor 崔晓熙姜济群桑伟谷蔷于海辉
Owner THE FIRST RES INST OF MIN OF PUBLIC SECURITY
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