Premium
An accurate and fast forward model of three‐dimensional electromagnetic wave scattering in a layered structure with multilayer rough interfaces
Author(s) -
Wu Chao,
Zhang Xiaojuan,
Fang Guangyou,
Shi Jiancheng,
Liu Shiyin
Publication year - 2015
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1002/2014rs005637
Subject(s) - scattering , electromagnetic radiation , polarimetry , inversion (geology) , radar , computer science , perturbation (astronomy) , forward scatter , radar cross section , wave propagation , physics , computational physics , optics , telecommunications , quantum mechanics , geology , paleontology , structural basin
Abstract We develop an accurate and fast forward model for calculating the compact closed‐form high‐order perturbative solutions of the problem of three‐dimensional (3‐D) radiation and propagation electromagnetic fields in a layered structure with multilayer rough interfaces. The proposed method for the fast forward model is first demonstrated by strictly theoretical formulas derivation in the framework of classical small perturbation method (SPM) without other else approximation and equivalent process. The kernel functions of high order are proposed for calculating the radar cross sections with more efficiency and clear physical meanings for better use in practice. What is more, we give the clear physical interpretation of the first‐order fully polarimetric electromagnetic wave scattering mechanism in the layered structure with multilayer rough interfaces. The proposed forward model is necessary to insure a successful inversion process. Furthermore, the high‐order SPM solutions derived by employing the proposed method are validated with existing methods and numerical results. Finally, we study the performance of the high‐order fully polarimetric electromagnetic wave scattering according to the numerical results and analyze the scattering enhancement phenomena.