典型植被的高效电磁全波分析方法研究

doi:10.12305/j.issn.1001-506X.2021.10.04

Abstract

Abstract:

The electromagnetic scattering from vegetation plays an important role in remote sensing, detection, anti-stealth and other fields. Due to its various types and inhomogeneous distributions, the numerical model will become more and more complex and the amount of computation goes up with the scenario increasing. In this case, the electromagnetic scattering characteristics of typical ground plants in large environment cannot be predicted with high accuracy under limited computing platforms and modeling capabilities. As a result, there is a big difference between the numerical and experimental results. Therefore, it is urgent to establish an efficient electromagnetic full-wave analysis method to obtain the electromagnetic scattering characteristics of typical vegetation. In this paper, the mixed integral equation for thin dielectric sheet and dielectric is established, and the periodic Green's function technique is used to realize the fast calculation of radar cross section of typical vegetation in large scene.

Key words: integral equation method, electromagnetic scattering, typical vegetation, periodic Green's function

CLC Number:

O441.4

Zi HE, Longqian CAO, Dazhi DING, Zhenhong FAN, Rushan CHEN. Study on electromagnetic analysis of an efficient full-wave numerical method for typical vegetation[J]. Systems Engineering and Electronics, 2021, 43(10): 2725-2732.

Figures/Tables 14

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Table 1

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对比参数	算法
对比参数	Ewald	MLP_FMM
未知量/个	3 102	3 102
计算时间/s	2 157	639
峰值内存/MB	159.3	115.7

对比参数	FEKO(10核)	本文方法(1核)
未知量/个	36 342	5 775
计算时间/h	12.9	0.6
内存/GB	8.3	0.7

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Study on electromagnetic analysis of an efficient full-wave numerical method for typical vegetation

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