电波科学学报2025，Vol.40Issue(1)：29-36,8.DOI:10.12265/j.cjors.2024183
基于PE-PO混合方法的海洋大气波导环境下电大目标电磁散射研究
Study on electromagnetic scattering of electrically large targets in ocean atmosphere duct environment based on PE-PO hybrid method
摘要
Abstract
To address the challenge of predicting electromagnetic scattering characteristics of electrically large targets in a maritime atmospheric duct environment,this paper proposes a hybrid computational method combining the three-dimensional parabolic equation method(PE)and the physical optics method(PO).In this approach,the PE is employed to solve the propagation of electromagnetic waves in the background environment,while the PO is used to calculate the scattering of radar waves by the target.Additionally,a plane wave spectrum decomposition technique is introduced to facilitate the efficient integration of the two algorithms.The proposed method is validated through scattering simulation experiments involving a metallic sphere over a flat surface,where it is compared with results from the multilevel fast multipole algorithm(MLFMA)and the PO method.Finally,the proposed method is applied to predict the electromagnetic scattering of a ship target under evaporation ducts of varying heights.The results demonstrate that the proposed PE-PO method effectively accounts for the influence of atmospheric ducts on both the incident wavefront and the target scattering process,providing a novel technical approach for analyzing and understanding the electromagnetic scattering characteristics of electrically large targets in ducting environments.关键词
电磁散射/大气波导/抛物方程(PE)法/物理光学(PO)法/混合方法Key words
electromagnetic scattering/atmospheric duct/parabolic equation method(PE)/physical optics(PO)method/hybrid method分类
电子信息工程引用本文复制引用
余洪鑫,冯菊,欧阳琪翔,廖成..基于PE-PO混合方法的海洋大气波导环境下电大目标电磁散射研究[J].电波科学学报,2025,40(1):29-36,8.基金项目
国家自然科学基金(62271416) （62271416）
