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Rapid calculation method for electromagnetic scattering characteristic of periodic-like structure target

A technology of target electromagnetic scattering and periodic structure, applied in the field of electromagnetics, can solve problems such as limiting SBFM calculation efficiency and increasing SBFM solution time, achieving the effect of simple implementation and improved calculation efficiency

Active Publication Date: 2017-03-15
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

However, for a system containing multiple sub-modules, the discrete functions of different sub-modules need to be established separately for each sub-module due to differences in space coordinates, attitudes, and sizes, which will greatly increase the solution time of SBFM and limit SBFM. computing efficiency

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  • Rapid calculation method for electromagnetic scattering characteristic of periodic-like structure target
  • Rapid calculation method for electromagnetic scattering characteristic of periodic-like structure target
  • Rapid calculation method for electromagnetic scattering characteristic of periodic-like structure target

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Embodiment Construction

[0034] The method for quickly calculating the electromagnetic scattering characteristics of a periodic structure target provided by the present invention will be further explained in detail in conjunction with the accompanying drawings and specific embodiments.

[0035] figure 1 It is a principle flow chart of the technical solution provided by the present invention. Among them, steps ①~③ show the special triangulation processing and the process of establishing the RWG function for the periodic structure target. The purpose is to make the discrete functions of different sub-modules relevant, and then make the discrete functions of different sub-modules It can be used repeatedly; Steps ④ and ⑤ show the establishment process of discrete functions for different sub-modules of similar periodic structure targets; Step ⑥ shows the basic steps for calculating the electromagnetic scattering characteristics of targets using the discrete functions established in steps ④ and ⑤.

[0036]...

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Abstract

The invention provides a rapid calculation method for the electromagnetic scattering characteristic of a periodic-like structure target. According to the technical scheme, the rapid calculation method comprises the steps that in the steps 1-3, special triangulation processing on the periodic-like structure target and RWG function establishing are conducted, wherein the steps are conducted for enabling discrete functions of different submodules to achieve correlation to be capable of being reused; in the step 4 and the step 5, the discrete functions of different submodules of the periodic-like structure target are established; 6, the electromagnetic scattering characteristic of the periodic-like structure target is calculated through the discrete functions established in the step 4 and the step 5. The rapid calculation method is used for the periodic-like structure target, the discrete function establishing process does not need to be repeated multiple times, the discrete functions of all the submodules can be obtained only by conducting coordinate transforming on the discrete functions established for the smallest submodules, and therefore the calculation efficiency is greatly improved. According to the rapid calculation method, the implementation mode is simple, and the calculation precision of an algorithm is not influenced.

Description

technical field [0001] The invention belongs to the technical field of electromagnetism, and in particular, the invention relates to a fast calculation method for electromagnetic scattering characteristics of similar periodical structure targets. Background technique [0002] When space electromagnetic waves irradiate the surface of the target, induced electromagnetic currents will be formed on the surface of the target, and these induced electromagnetic currents will generate secondary radiation to the space, forming the space scattering field of the target. This secondary scattering characteristic of the target relative to the space electromagnetic wave is called the electromagnetic scattering characteristic of the target. The calculation of target electromagnetic scattering characteristics has important practical application value in the fields of target stealth design and radar imaging. [0003] The existing methods for calculating the electromagnetic scattering charact...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 杨虎何艳徐延林卢俊麒刘燚刘桃林余维康
Owner NAT UNIV OF DEFENSE TECH
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