On the Efficient Electromagnetic Scattering Analysis from Targets with Electrically Small Surface Discontinuities

Bi Yi Wu*, Chao Ze Yan, Ming Lin Yang, Xin Qing Sheng

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

2 引用 (Scopus)

摘要

Surface discontinuities (SDs), such as cylindrical protrusions or dents, are commonly found on artificial aircraft or vehicle surfaces. Despite being electrically small in size, their sheer quantity can significantly affect the scattering characteristics of the target. Due to the large contrast between the surface discontinuity and surrounding geometry, the efficient scattering analysis of these targets is technically challenging in both mesh generation and numerical simulation. In this communication, two novel basis functions are presented based on the discontinuous Galerkin integral equation (DGIE) framework. Using the so-called extended half-Rao-Wilton-Glisson (RWG) and modified top junction basis functions, the cylindrical SDs with different or variable height-radius ratios can be efficiently discretized without requiring mesh conformality. Extensive numerical simulations of SDs on a low-radar cross section (RCS) testbed are performed to verify the accuracy, flexibility, and robustness of the proposed method.

源语言英语
页(从-至)2980-2985
页数6
期刊IEEE Transactions on Antennas and Propagation
72
3
DOI
出版状态已出版 - 1 3月 2024

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