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Radiation scattering integrated low-RCS radome and design method thereof

A technology of radiation scattering and design method, applied in the field of radome, to achieve the effect of realizing the integrated function of radiation and scattering, strong application value, and solving the problem of RCS reduction

Inactive Publication Date: 2020-07-17
AIR FORCE UNIV PLA
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  • Application Information

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Problems solved by technology

But in-band RCS reduction is still a problem

Method used

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  • Radiation scattering integrated low-RCS radome and design method thereof
  • Radiation scattering integrated low-RCS radome and design method thereof
  • Radiation scattering integrated low-RCS radome and design method thereof

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Embodiment Construction

[0048] Attached below Figure 1-13 , the specific implementation of the present invention will be described in detail, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0049] Such as Figure 13 As shown, the present invention proposes a radiation-scattering integrated radome and its rapid design method. By using the stochastic gradient descent method and artificial neural network, the rapid design of the radiation-scattering integrated radome is realized, and an antenna is designed and processed. The hood is tested, and the experimental results show the performance and reliability of the design method and the designed samples.

[0050] Phase Cell: A cell that has a different phase response to electromagnetic waves. The phase unit is designed as figure 1 shown.

[0051] The stochastic gradient descent method optimizes the arrangement of the unit phases. The specific training situation and result...

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Abstract

The invention relates to the technical field of radomes, and discloses a radiation scattering integrated low-RCS radome and a design method thereof, and the method comprises the following steps: optimizing the arrangement of a plurality of phase units on a transmission-type metasurface of the radome through a stochastic gradient descent method; optimizing the objective function of the phase unit arrangement by using a stochastic gradient descent method to obtain optimal phase arrangement; obtaining the optimal phase arrangement according to the optimized objective function, carrying out the fitting between the sizes of the phase units and the phase relation of the phase units through employing an artificial neural network, and finding out the patch sizes corresponding to a plurality of phase units; and designing the transmission-type metasurface of the radome according to the patch sizes corresponding to a plurality of phase units and the optimal arrangement so as to obtain the radiation scattering integrated low-RCS radome. The radome and the design method thereof solve the problem of RCS reduction in a working band and are simple in implementation method, low in cost and high inpracticability.

Description

technical field [0001] The invention relates to the technical field of radome, in particular to a radiation-scattering integrated low-RCS radome and a design method thereof. Background technique [0002] The radome is a structure that protects the antenna system from the external environment. It has good mechanical properties and can resist various harsh environments to protect the normal operation of the antenna. In terms of electromagnetic properties, it has good transparency. Wave characteristics, reducing the impact on the transmission of electromagnetic waves. Radome is an important means in electromagnetic protection. [0003] Metamaterials are one of the research hotspots in the academic circles in recent years. It has some extraordinary physical properties that natural materials do not have. Electric Metamaterials (EM for short) refers to the equivalent dielectric materials composed of subwavelength unit structures. Artificial composite materials or composite struc...

Claims

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Application Information

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IPC IPC(8): H01Q1/42H01Q15/00G06F30/398G06N20/00
CPCG06N20/00H01Q1/42H01Q15/0013
Inventor 王甲富朱瑞超随赛屈绍波范亚韩亚娟刘同豪邱天硕
Owner AIR FORCE UNIV PLA
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