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Mixed-order Nystrom method for analyzing electromagnetic scattering characteristics of multi-scale conductive object

A target electromagnetic scattering and multi-scale technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems that affect the efficiency of the solution, large unknowns, etc., to improve the efficiency of calculations, ensure calculation accuracy, The effect of unknown reduction

Inactive Publication Date: 2015-11-25
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0004] However, for the analysis of the electromagnetic scattering problem of multi-scale targets, the traditional high-order Nystrom method uses a uniform-order vector interpolation basis function, which makes the unknown quantity to be solved relatively large, which affects the efficiency of the solution

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  • Mixed-order Nystrom method for analyzing electromagnetic scattering characteristics of multi-scale conductive object
  • Mixed-order Nystrom method for analyzing electromagnetic scattering characteristics of multi-scale conductive object
  • Mixed-order Nystrom method for analyzing electromagnetic scattering characteristics of multi-scale conductive object

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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] combine figure 1 , the present invention is based on the mixed-order Nystrom method for analyzing the electromagnetic scattering characteristics of multi-scale conductor targets, and the steps are as follows:

[0018] In the first step, the uniform plane wave is irradiated on a multi-scale conductor structure, and the surface induced surface current J will be generated on the surface of the structure S , according to the electric field boundary condition of an ideal conductor, that is, the total field tangential component of the metal surface is 0, the electric field integral equation (EFIE) of the multi-scale conductor structure object is obtained, as follows

[0019] [E inc (r)+E sca (r)] tan =0(1) Among them, the subscript tan represents the tangential component of the electric field, E inc Indicates the electromagnetic wave irradiated on the t...

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Abstract

The invention discloses a mixed-order Nystrom method for analyzing electromagnetic scattering characteristics of a multi-scale conductive object. Aiming at a multi-scale conductive structure, the electromagnetic scattering characteristics are analyzed by adopting the mixed-order Nystrom method. On the basis of the traditional high-order Nystrom method, a mixed-order strategy is introduced; and a vector interpolation base function having proper orders is selected according to the size of a triangular unit of a discrete surface. Compared with the traditional high-order Nystrom method, the mixed-order Nystrom method disclosed by the invention has the advantages that: on the premise of ensuring the calculation accuracy, the unknown calculation quantity can be greatly reduced while the electromagnetic scattering characteristics of the multi-scale conductive object are analyzed; and thus, the calculation efficiency can be increased.

Description

technical field [0001] The invention belongs to a high-efficiency numerical method for analyzing the electromagnetic scattering characteristics of a multi-scale conductor target, in particular a mixed-order Nystrom method for analyzing the electromagnetic scattering characteristics of a multi-scale conductor target. Background technique [0002] The acquisition and analysis of electromagnetic scattering characteristics of radar targets is an important research field in electromagnetic problems. Electromagnetic scattering waves of targets are the information sources of many applications in radar detection, remote sensing observation and geological surveying. Quantitative analysis of scattering characteristics is the key to these application systems. The main basis when designing and working. The physical quantities such as the shape and volume of the radar target are obtained by calculating the parameters such as the radar cross section. Therefore, the research on the scatte...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 陈如山丁大志樊振宏曹军
Owner NANJING UNIV OF SCI & TECH
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