Electromagnetic parameter optimization design-based scaled composite material preparation method
A technology of electromagnetic parameters and composite materials, applied in the fields of electrical digital data processing, calculation, special data processing applications, etc., can solve problems such as increasing the difficulty of preparation
Active Publication Date: 2016-01-06
SHANGHAI RADIO EQUIP RES INST
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Problems solved by technology
In engineering, it is very difficult to keep the electromagnetic parameters constant, especially when the
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Embodiment 1
[0037] Embodiment 1: Take carbonyl iron powder mixed with epoxy resin as an example.
[0038] Firstly, the reflection coefficients of horizontal polarization and vertical polarization are calculated according to the electromagnetic parameters of the composite material in the original frequency band, see figure 1 and figure 2 shown by the solid line.
[0039] figure 1 It is a metal substrate with a dielectric thickness of 1mm. The solid line is the dielectric constant of 22.04+1.32i and the magnetic permeability of 3.76+2.52i at the original 4GHz frequency; the dotted line is the dielectric constant of 11.6+0.69i at the reduced frequency of 8GHz. The vertical polarization reflection coefficient of the magnetic permeability 1.8+1.21i varies with the pitch angle. figure 2 With figure 1 Variation curves of horizontal polarization reflection coefficient with elevation angle under the same conditions.
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Abstract
The invention discloses an electromagnetic parameter optimization design-based scaled composite material preparation method, which comprises the following steps: (1) calculating a reflection coefficient of an original material; (2) carrying out electromagnetic parameter tests on mixed materials, namely carrying out electromagnetic parameter tests on the mixed materials at different proportions according to the scale requirements; (3) establishing an electromagnetic parameter library of the mixed materials at different proportions, namely, combining electromagnetic parameter test results with an effective medium theory and carrying out correction to obtain the electromagnetic parameter library; and (4) optimizing the electromagnetic parameter, namely carrying out optimization on the mixed materials according to the reflection coefficient of the original band material, and obtaining a proportion scheme of the scaled composite material through the electromagnetic parameter library. According to the electromagnetic parameter optimization design-based scaled composite material preparation method disclosed by the invention, the mixed materials which meet the scale relationship and are realizable in engineering are obtained through an electromagnetic parameter optimization design; the accuracy requirement of the scale test is met; and the electromagnetic parameter optimization design-based scaled composite material preparation method is an effective composite material electromagnetic scale test scheme.
Description
technical field [0001] The invention relates to a composite material preparation method in radar target characteristic testing technology, in particular to a scaled composite material preparation method based on electromagnetic parameter optimization design. Background technique [0002] With the emergence of a large number of composite material aircraft, ships and vehicles, weapon systems urgently need to obtain target characteristic information required for target detection, identification and tracking, so more and more attention has been paid to the composite material target characteristic testing technology. However, the traditional full-scale test of target characteristics consumes a lot of money in model making and is limited by the test site; the scale test has a bottleneck in the electromagnetic scale structure of composite materials, and can only obtain electromagnetic scattering data of all-metal targets. Compared with the real target, the error is large, and it is...
Claims
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Inventor 高伟廖意许勇刚袁黎明
Owner SHANGHAI RADIO EQUIP RES INST
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