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Time domain discontinuous Galerkin integral equation method

A time-domain discontinuous and integral equation technology, applied in the field of time-domain integral equations for analyzing the transient electromagnetic scattering characteristics of conductor targets, can solve the problems of large unknowns and time-consuming calculation, and achieve the effect of efficient and accurate analysis

Inactive Publication Date: 2016-12-07
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0004] However, for the analysis of the transient electromagnetic scattering characteristics of conductors, because the traditional time-domain integral equation based on the RWG basis function requires discrete triangular elements to have a common inner edge
When dealing with some complex or fine structures, it will cause problems such as large unknowns and time-consuming calculations.

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0018] combine figure 1 , the present invention is based on the time-domain discontinuous Galerkin integral equation method of analyzing conductor transient electromagnetic scattering characteristics, and the steps are as follows:

[0019] In the first step, the electromagnetic wave is irradiated on the ideal conductor, and the induced surface current J is generated on the surface of the conductor. According to the boundary conditions of the ideal conductor, the time domain integral equation TDIE of the conductor target is obtained, as follows

[0020] n ^ ( r o ) × ( E i ( r o , ...

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Abstract

The invention discloses a time domain discontinuous Galerkin integral equation method. For a conductor structure, a unipolar RWG basis function and a triangular time basis function are adopted as a spatial basis function and a time basis function. Compared with a conventional time domain integral equation method, the time domain discontinuous Galerkin integral equation method has the advantage of flexible discrete grids. A conventional RWG basis function requires discretized triangular grids to share edges, so that the research and analysis on the practical problem become complicated; and the unipolar RWG basis function adopted in the time domain discontinuous Galerkin method does not require the triangular grids to share the edges.

Description

technical field [0001] The invention belongs to the field of transient electromagnetic scattering characteristics, in particular to a time domain integral equation method for analyzing the transient electromagnetic scattering characteristics of conductor targets. Background technique [0002] With the rapid development of modern military technology, the research on electromagnetic scattering of complex three-dimensional targets has become more and more important and urgent. Many national defense and civilian studies involve the modeling of complex targets, such as stealth and anti-stealth research of military targets, radar detection, analysis and design of vehicle antennas and satellite antennas, etc. If these targets are solidly modeled, it is not only expensive to obtain the electromagnetic characteristics of the target through model experiments, but also the actual measurement is easily affected by various factors, and there are large errors in the measurement results. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 丁大志陈朝威陈如山樊振宏赵颖
Owner NANJING UNIV OF SCI & TECH
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