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Sub-array arranging method for hemispherical array and spherical conformal antenna array based on projection method

A technology of hemispherical surface and projection method, which is applied in the direction of separately energized antenna arrays, antenna arrays, and devices for manufacturing antenna arrays. The effect of reducing dimensions, increasing scanning angles, and facilitating maintenance and replacement

Active Publication Date: 2019-03-01
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Description
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Problems solved by technology

However, due to the single sub-array module of this method, it is difficult to form seamless splicing when performing spherical splicing, and the direct spacing between array elements is different, so the performance of beamforming will be greatly affected in some cases

Method used

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  • Sub-array arranging method for hemispherical array and spherical conformal antenna array based on projection method
  • Sub-array arranging method for hemispherical array and spherical conformal antenna array based on projection method
  • Sub-array arranging method for hemispherical array and spherical conformal antenna array based on projection method

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Embodiment

[0080] This embodiment will provide the concrete practice instance for above-mentioned scheme:

[0081] In the above step two, the analysis principle of the sub-array division process of the hemispherical surface is as follows:

[0082] According to the required spherical radius, construct a football 32-hedron.

[0083] Assuming the required spherical radius is R, the side length L of the regular polygon can be solved. figure 1 The "equator" line shown passes through exactly 10 regular hexagons, and the distance through each regular hexagon is equal, that is to say, the distance of the "equator" line on each regular hexagon is one-tenth The perimeter is πD / 10, and the length of the chord is just equal to 3L / 2, so the side length of the regular polygon is:

[0084]

[0085] The football 32-hedron is divided along the equator, and the upper half remains as the initial shape of the projection.

[0086] figure 1It shows how to divide the football 32-hedron. According to thi...

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Abstract

The invention discloses a sub-array arranging method for a hemispherical array and a spherical conformal antenna array based on a projection method. According to the sub-array arranging method, the less number of sub-arrays and basically similar specifications can be realized, seamless splicing between sub-arrays can be realized, and the signal processing performance can be improved. The arrangingmethod includes the following concrete steps: performing triangular sub-array division on a hemisphere surface, the division step being as follows: constructing a polyhedron tangent to the hemispheresurface, wherein the polyhedron is composed of a plurality of regular n-polygons, and n is a positive integer greater than 2; projecting the center of gravity of the regular n-polygon onto the spherical surface, and connecting the center of gravity projection with each vertex of the regular n-polygon to obtain n triangles; then equally dividing the n triangles by a projection method to obtain a plurality of triangles with approximate sizes and specifications, forming a triangle set and taking the triangle set as a triangular sub-array for dividing the hemisphere surface; adding elements to the triangular sub-array, and arranging the elements evenly in each sub-array.

Description

technical field [0001] The invention belongs to the technical field of array signal processing, and relates to a hemispherical array based on a projection method and a method for arranging sub-arrays of spherical common antenna arrays. Background technique [0002] Conformal array antenna refers to the array antenna attached to the surface of the carrier and bonded to the carrier, that is, the array antenna needs to be conformally installed on a fixed-shaped surface to form a non-planar conformal antenna array. In modern wireless communication systems, conformal array antennas have become an important field in the field of antennas because they can conform to the surface of high-speed carrier platforms such as aircraft, missiles, and satellites without destroying the carrier's shape, structure, and aerodynamic characteristics. Research hotspots. [0003] The design of conformal array antenna is a complex system problem, and it is difficult to have a strict and precise solut...

Claims

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Application Information

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IPC IPC(8): H01Q21/00H01Q21/06
CPCH01Q21/0087H01Q21/061
Inventor 杨小鹏胡尚坤曾涛龙腾胡晓娜
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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