Multiple-input multiple-output imaging antenna layout method of close-distance planar array

A technology of planar array and layout method, which is applied to antennas, antenna arrays, and structural forms of radiating elements, and can solve the problems of short-distance microwave imaging that cannot balance efficiency and imaging quality

Active Publication Date: 2015-01-07
INNER MONGOLIA UNIV OF TECH
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Problems solved by technology

[0013] The problem to be solved by the present invention is that short-distance microwave imaging cannot take into account both efficiency and imaging quality, and a layout method for short-distance planar array multi-input multi-output imaging antennas is provided

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  • Multiple-input multiple-output imaging antenna layout method of close-distance planar array

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Embodiment Construction

[0093] The present invention will be described in detail below in conjunction with the accompanying drawings. The steps involved in the text do not limit the steps of the layout method of the present invention unless there is a contextual logical connection.

[0094] Such as figure 1 As shown, it is a layout method of a short-distance planar array MIMO imaging antenna provided by the present invention, wherein, the two-dimensional plane of the planar array MIMO imaging system includes the pitch direction (that is, the Z-axis direction) and the azimuth direction (that is, the Y-axis direction) axis direction), X near is the short distance of the array antenna target, that is, the shortest distance between the observation target and the plane array antenna face (denoted as ABCD), the origin O(0,0) is the geometric center of the MIMO imaging system plane array, S Y0 and S Z0 Respectively represent the target observation range along the Y-axis and Z-axis directions. Same as the ...

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Abstract

The invention discloses a multiple-input multiple-output imaging antenna layout method of a close-distance planar array. The method comprises the steps that firstly, the size of a shortest effective composite array of an imaging system and the size of a planar array element antenna are determined; secondly, the minimum distance between similar receiving and transmitting antenna centers is determined; thirdly, the total number of receiving and transmitting antenna elements of a minimum composite array of the imaging system and the size of the minimum composite array are determined; fourthly, the number of total receiving and transmitting array elements of the imaging system, the number of antenna equivalent phase centers of the imaging system and the size of the planar array of the imaging system are calculated; fifthly, the distribution of the geometrical center positions of the transmitting and receiving array element antennas of the imaging system is calculated; sixthly, the layout is carried out according to the distribution of the geometrical center positions of the transmitting and receiving array element antennas of the imaging system. According to the layout method, the problem that in the planar array MIMO imaging, the length of the effective composite array is affected by the observation distance is solved, and on the premise of guaranteeing the quality of close-distance microwave images, the data acquiring efficiency is further improved.

Description

technical field [0001] The invention relates to the field of short-distance microwave imaging observation, in particular to a short-distance planar array multi-input multi-output imaging antenna layout method. Background technique [0002] Short-range microwave imaging technology is not affected by lighting and other conditions, and has the advantages of being able to penetrate certain obstacles. It is playing an increasingly important role in the fields of safety inspection, non-destructive inspection, and radar target imaging diagnosis. According to the actual application characteristics, the observation range of short-distance microwave imaging is usually within 2m or within 10m. The conventional method of using a single antenna to move along a two-dimensional plane to obtain the echo data of the observed target takes a long time and is inefficient, which is only suitable for experimental verification. , but not suitable for practical system applications. [0003] David ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q21/00
Inventor 黄平平谭维贤洪文王彦平
Owner INNER MONGOLIA UNIV OF TECH
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