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Non-metallic structure electromagnetic scaling design method

A design method and structure technology, applied in the direction of design optimization/simulation, calculation, electrical digital data processing, etc., to achieve the effect of accurate and effective technical approach

Active Publication Date: 2019-04-12
SHANGHAI RADIO EQUIP RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the 12th issue of "Acta Electronics" in 1992, the document "Research on the Similarity Law of Lossy Target Electromagnetic Scattering Scaling Measurement" proposed three similarity laws for the lossy target scaling model. The relationship between the ratio model RCS (Radar Cross Section, radar cross-sectional area) and the full-scale model RCS, but the dielectric layer studied is only coated on the surface of the metal scatterer

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  • Non-metallic structure electromagnetic scaling design method
  • Non-metallic structure electromagnetic scaling design method
  • Non-metallic structure electromagnetic scaling design method

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Embodiment 1

[0073] Simulation Example 1: Isosceles Split Shape

[0074] The simulated isosceles split body model is as image 3 As shown, the bottom surface of the full-scale isosceles split body is a square with a side length of 2000 mm and a height of 500 mm. Its dielectric constant is 1-100j and its magnetic permeability is 1. The geometric dimensions of the scaled model and the theoretical scaled model of the isosceles cleavage model are 1 / 10 of the full-scale isosceles cleavage model; and the material of the theoretical scaled model is the same as that of the full-scale isosceles cleavage model , that is, the electromagnetic parameters of the two are consistent; and the dielectric constant of the simulated scaling material obtained by the method of the present invention is 47.66-1.86j, and the magnetic permeability is 0.29-1.89j. When the simulation frequency is 100GHz, the calculated physical quantity is the single-station RCS of the model, the azimuth angle in the simulation is 0°...

Embodiment 2

[0076] Simulation Example 2: Cone

[0077] The simulated cone model is as Figure 5 As shown, the diameter of the bottom surface of the full-scale cone is 1000mm, the height is 500mm, the dielectric constant is 1-100j, and the magnetic permeability is 1. The geometric dimensions of the scale model and the theoretical scale model of the cone model are both 1 / 10 of the full-scale cone model; and the material of the theoretical scale model is the same as that of the full-scale cone model, that is, the electromagnetic The parameters are consistent; and the dielectric constant of the simulated scaling material obtained by the method of the present invention is 47.66-1.86j, and the magnetic permeability is 0.29-1.89j. When the simulation frequency is 100GHz, the calculated physical quantity is the single-station RCS of the model, the azimuth angle in the simulation is 0°, the elevation angle varies from 0° to 90°, and the TE polarized wave irradiation is set.

[0078] Such as Im...

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Abstract

The invention relates to a non-metallic structure electromagnetic scaling design method, which comprises the following steps: S1, calculating complex reflection coefficients of theoretical scaling materials at different incidence angles under vertical and parallel polarization at scaling frequencies; s2, at the scaling frequency, establishing corresponding relations between different mixture formulas and electromagnetic parameters to obtain a scaling electromagnetic parameter library; s3, at the scaling frequency, circularly calculating the complex reflection coefficients of the simulated scaling material under vertical and parallel polarization at different incidence angles; s4, finding out a result most matched with the complex reflection coefficient of the theoretical scale material from all calculation results in the step S3 to obtain an electromagnetic parameter corresponding to the simulated scale material; and S5, designing the geometric shape of the non-metal structure scalingmodel to be consistent with that of the theoretical scaling model. The method is realized by optimizing and simulating electromagnetic parameters of the scaling material and enabling the electromagnetic parameters to be consistent with the complex reflection coefficient of the theoretical scaling material, breaks through the limitation of the scaling theory on the electromagnetic parameters of thescaling material, and is accurate and effective.

Description

technical field [0001] The invention relates to a design method for an electromagnetic scaling simulation material of a non-metallic structure, and belongs to the technical field of scaling measurement of target electromagnetic scattering characteristics. Background technique [0002] Electromagnetic scaling measurement technology is an important means to study the electromagnetic scattering characteristics of targets. In electromagnetic scale measurement, constructing a high-precision scale model is one of the important prerequisites. With the development and wide application of composite material technology, structural components of non-metallic composite materials in targets are becoming more and more common, and these structures have an important impact on the electromagnetic scattering characteristics of targets. These structures not only use materials with complex electromagnetic properties, but also have relatively special geometric shapes. In engineering, it is oft...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20Y02E60/00
Inventor 袁黎明谢志杰许勇刚戴飞张元
Owner SHANGHAI RADIO EQUIP RES INST
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