Electromagnetic scattering from two-layered rough interfaces with a PEC object： vertical polarization

• Published in: Chinese physics B Vol. 20; no. 5; pp. 23 - 32
• Main Author: 王安琪 郭立新 柴草
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.05.2011
• Subjects: Computer simulation; Cylinders; Derivatives; Dielectric constant; Gaussian; Mathematical models; PEC; Scattering; Vertical polarization; 均匀介质; 垂直极化; 数值模拟; 极化电磁散射; 相对介电常数; 粗糙界面散射; 粗糙表面
• ISSN: 1674-1056; 2058-3834
• DOI: 10.1088/1674-1056/20/5/050202

Electromagnetic （EM） scattering from a stack of two rough interfaces separating a homogeneous medium with a perfectly electric conducting （PEC） object has been calculated through the method of moments for vertical polarization. Theoretical formulations of EM scattering from multi-layered rough interfaces with a PEC object have been derived in detail and the total fields and their normal derivatives on the rough interfaces are solved. The two-layered model is a special case. In this work, a Gaussian rough surface was applied to simulate the rough interface. A cylinder was located above, between or below the two-layered rough interfaces. Through numerical simulations, the validity of this work is demonstrated by comparing it with existing scattering models, which are special cases that include a PEC object located above/below a single-layered rough interface and two-layered rough interfaces without an object. Subsequently, the influences of characteristic parameters, such as the relative permittivity of the medium, as well as the average height between the two rough surfaces, on the bistatic scattering coefficient are discussed.