An efficient numerical technique to calculate the high frequency diffracted fields from the convex scatterers with the Fock-type integrals

doi:10.2528/PIERC18042202

CIOMP OpenIR

	An efficient numerical technique to calculate the high frequency diffracted fields from the convex scatterers with the Fock-type integrals
	Yang, Yang; Wu, Yu Mao; Jin, Ya-Qiu; Zhou, Haijing; Liu, Yang; Wang, Jianli
	2018
发表期刊	Progress In Electromagnetics Research C
ISSN	19378718
卷号	86 页码:203-215
摘要	High frequency electromagnetic (EM) scattering analysis from the scatterers is important to the computational electromagnetics community. Meanwhile, high frequency diffraction technique, like the uniform geometrical theory of diffraction (UTD), is very important when the observation point lies in the transition, shadow and deep shadow regions of the considered scatterer. Furthermore, the diffracted fields arising from the scatterers via the UTD technique are usually highly oscillatory in nature, which is named as the Fock type integrals with the Airy function and its derivative involved. In this work, we propose a Fourier quadrature method to calculate the Pekeris integrals. Moreover, we first adopt the Fourier quadrature technique to calculate the diffracted fields from the dielectric convex cylinder with impedance boundary conditions, like the creeping wave fields and NU-diffracted wave fields. On invoking the Fourier quadrature method, the results of total scattered fields at the fixed observation points could achieve 1 dB relative errors. Moreover, numerical results demonstrate that the computational efforts for the oscillatory Pekeris-integrals are independent of wave frequency with the fixed sampling density and integration limit. 2018, Electromagnetics Academy. All rights reserved.
关键词	Computational electromagnetics Computation theory Diffraction Electromagnetic wave scattering Fourier transforms
DOI	10.2528/PIERC18042202
收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60572
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Yang, Yang,Wu, Yu Mao,Jin, Ya-Qiu,et al. An efficient numerical technique to calculate the high frequency diffracted fields from the convex scatterers with the Fock-type integrals[J]. Progress In Electromagnetics Research C,2018,86:203-215.
APA	Yang, Yang,Wu, Yu Mao,Jin, Ya-Qiu,Zhou, Haijing,Liu, Yang,&Wang, Jianli.(2018).An efficient numerical technique to calculate the high frequency diffracted fields from the convex scatterers with the Fock-type integrals.Progress In Electromagnetics Research C,86,203-215.
MLA	Yang, Yang,et al."An efficient numerical technique to calculate the high frequency diffracted fields from the convex scatterers with the Fock-type integrals".Progress In Electromagnetics Research C 86(2018):203-215.

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