Spherical equal-volume-ratio conformal mapping method of radome
A technology of conformal mapping and radome, which is applied in the direction of antennas, radiating unit covers, electrical components, etc., can solve the problems of planar unit placement, radome conformal absorber design and implementation difficulties, etc.
Active Publication Date: 2021-01-05
NAVAL UNIV OF ENG PLA
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However, when building a conformal absorber on a 2D sphere, for example on a sphere, there is no suitable isometric mapping to place planar elements onto the curved surface
This makes the design and implementation of radome conformal absorbers more difficult
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[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0032] like figure 1 As shown, the spherical equal-area ratio conformal mapping method of the radome provided by this embodiment includes:
[0033] 101. Establish a mapping plane located on the x-axis and the y-axis; a dot matrix is distributed on the plane, each point represents a periodic unit, and there is no coverage between the periodic units;
[0034] In this embodiment, the shape of the periodic unit is a double hexagonal ring, and the ...
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The invention relates to the technical field of radome design and particularly relates to a spherical equal-volume-ratio conformal mapping method of a radome. The method comprises the following stepsof establishing a mapping plane positioned on an x axis and a y axis; wherein dot matrixes are distributed on the plane, each point represents a periodic unit, and the periodic units are not covered;determining a certain point Q0 in the dot matrix as a circle center, and finding any point Q in the dot matrix; establishing a surface spherical surface of the radome, mapping Q0 to a corresponding point P0 on the spherical surface along a z axis, and mapping Q to a corresponding point P on the spherical surface; establishing local mapping between a unit where Q is located and a tangent plane withP as an original point; and linearly mapping the unit where Q is located to the spherical surface where P is located by taking the zoom coefficient as alpha s, so that the area of a circle passing through Q by taking Q0 as the circle center is in direct proportion to the area of a spherical crown passing through P by taking the z axis as the central axis. According to the method, each periodic unit on the plane can be mapped on the surface spherical surface of the radome, and the electromagnetic mutual coupling characteristic of periodic unit distribution is maintained to the maximum extent under the conformal condition.
Description
technical field [0001] The invention relates to the technical field of radome design, in particular to a spherical equal-area ratio conformal mapping method of a radome. Background technique [0002] Using absorbing material on the surface of the radome, most conformal absorbing materials are studied cylindrical conformality, which is due to the fact that cylindrical conformality only bends in one direction. However, when building a conformal absorber on a 2D spherical surface, for example on a sphere, there is no suitable isometric mapping to place planar elements onto the curved surface. This makes the design and implementation of radome conformal absorbers more difficult. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention provides a conformal mapping method for a spherical equal-area ratio of a radome, which can design and realize a radome with a spherical surface. [0004] The spherical equal-area ratio ...
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Login to View More IPC IPC(8): H01Q1/42H01Q17/00
CPCH01Q1/42H01Q17/008
Inventor 刘立国王永生孟田珍李轲谷晓鹏
Owner NAVAL UNIV OF ENG PLA