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Common-domain multi-aperture hybrid array antenna arraying method and system

An array antenna and multi-aperture technology, which is applied in the co-domain multi-aperture mixed array antenna array method and system field, can solve problems such as the complexity of the optimization process, improve the efficiency of the array arrangement, avoid redundant addressing calculations, and improve efficiency Effect

Active Publication Date: 2022-03-08
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Based on the constraints of the array element arrangement above, according to the size of the antenna unit, the distance between the two units needs to meet the respective unit spacing restrictions, that is, the distance between the unit and its nearby units must meet certain requirements so that it does not overlap with the nearby units. The process is more complicated

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  • Common-domain multi-aperture hybrid array antenna arraying method and system
  • Common-domain multi-aperture hybrid array antenna arraying method and system
  • Common-domain multi-aperture hybrid array antenna arraying method and system

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Embodiment 1

[0073] This embodiment provides a sparse optimization method for a co-domain multi-aperture array antenna, and finally obtains the array element distribution of the hybrid array antenna and the array pattern at the time of the lowest sidelobe. Such as figure 1 as shown, figure 1 It is a flow chart of the co-domain multi-aperture hybrid array antenna arrangement method in this embodiment. The present invention introduces alternative array elements, and the initial positions of the alternative array elements and the specified number of array elements are generated at the same time, so as to improve the optimization efficiency during the optimization process. to find better results. Various caliber array antennas are mixed and arranged in a specified area, and the spacing requirements between adjacent antenna elements are met so that there is no intersection or overlap of antenna elements between any two. In the process of antenna unit position optimization, the co-domain multi...

Embodiment 2

[0117] The hybrid array antenna optimized in this embodiment has a circular area with a diameter of 0.6m, and the x-axis and y-axis are set as figure 2 shown. The hybrid array antenna to be optimized works in the 8-12GHz frequency band and consists of two array antennas: a transmitting array antenna and a receiving array antenna. The number of transmitting array antenna elements is 16, and the element size is 19.2mm, distributed in a circular area with a diameter of 0.4m; the number of receiving array antenna elements is 32, and the element size is 28.7mm, distributed in a circular area with a diameter of 0.6m. circular area. All array elements are laid out in the form of independent units. The effective position points of the grid are located on many concentric rings. The angle difference between adjacent effective position points is 0.5°, and the radius difference between adjacent rings is 5mm. In the optimization process, the initial array parameters are composed of the ...

Embodiment 3

[0121] The aperture of the hybrid array antenna optimized in this embodiment is a circular area with a diameter of 12m, and the x-axis and y-axis are set as Figure 7 shown. The hybrid array antenna to be optimized works in the 2-4GHz frequency band and consists of two array antennas: array antenna 1 and array antenna 2. The array antenna has 96 elements with a size of 53.5mm, which are distributed in a circular area with a diameter of 8m; the number of elements with a second array antenna is 256, with an element size of 82mm, distributed in a circular area with a diameter of 12m. All array elements are laid out in the form of independent units. The effective position points of the grid are located on many concentric rings. The angle difference between adjacent effective position points is 0.3°, and the radius difference between adjacent rings is 8mm. In the optimization process, the initial array parameters are composed of the position information of 404 array elements inclu...

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Abstract

The invention discloses a common-domain multi-aperture hybrid array antenna arraying method and system, and belongs to the technical field of array antenna design, and the method comprises the steps: S1, initializing hybrid array parameters; s2, constructing a common-domain multi-aperture spacing limitation matrix; s3, common-domain multi-aperture antenna addressing is carried out; and S4, optimizing algorithm iteration. The method can be applied to the solving problem of effective arrangement of array elements under the condition of spacing limitation of array elements of array antennas with various calibers, and the optimization efficiency is greatly improved; array aperture expansion can be carried out, the method is not only suitable for mixed arrangement optimization of two arrays, but also suitable for mixed arrangement optimization of more arrays, and the problem of large-scale complex multi-array arrangement can be solved; an optimization result can be fed back to guide the adjustment of the aperture size of the region, the actual array element size is combined during optimization, and the optimization result has engineering implementation; the array antenna obtained by the invention has the characteristics of low side lobe and high gain, and can effectively improve the imaging precision and working distance of a radar when being applied to a large ground imaging radar system.

Description

technical field [0001] The present invention relates to the technical field of array antenna design, in particular to a co-domain multi-aperture hybrid array antenna arrangement method and system. Background technique [0002] Radar plays an important role in military and civilian fields, and radar imaging is an important milestone in the history of radar development. The imaging function enables radar to have the ability to image and visualize various cooperative or non-cooperative targets. At present, the imaging technology of radar to air is mainly real aperture radar and inverse synthetic aperture radar. The real aperture radar can use the single "snapshot" data collected by the antenna array to obtain the instantaneous radar image of the target, but the resolution is not very high; inverse synthesis Like the synthetic aperture radar, the aperture radar relies on the relative motion between the radar and the target to form a synthetic array to improve the azimuth resolut...

Claims

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Application Information

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IPC IPC(8): G06F30/27G06N3/00G06N3/12H01Q21/00
CPCG06F30/27G06N3/006G06N3/126H01Q21/00
Inventor 朱庆超方佳陶蕾刘颂阳李子超徐龙张小林金谋平
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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