A hybrid method of solving near-zone composite eletromagnetic scattering from targets and underlying rough surface

• 来源期刊: 中国物理B（英文版）
• 关键词: near-field scattering rough surface target in extra-low-altitude shooting and bouncing ray (SBR)
• 年，卷（期）: 2020,（2）
• 页码范围: 316-322
• 页数: 7页
• 语种: 英文
• DOI: 10.1088/1674-1056/ab5ef9

摘要

For composite electromagnetic (EM) scattering from rough surface and target above it in near-field condition, modified shooting and bouncing ray (SBR) method and integral equation method (IEM), which are analytic methods combined with two-scale model for rough surface, are proposed to solve the composite near-field scattering problems. And the modified method is verified in effectiveness and accuracy by comparing the simulation results with measured results. Finally, the composite near-fielding scattering characteristics of a slanted plane and rough water surface below are obtained by using the proposed methods, and the dynamic tendency of composite scattering characteristics versus near-fielding distance is analyzed, which may have practical contribution to engineering programs in need of radar targets near-field characteristics under extra-low-altitude conditions.