Bistatic Scattering From Three-Dimensional Layered Structures With Multilayer Rough Interfaces

We develop a fast method for deriving the general closed-form perturbative solutions of bistatic scattering from layered structure with multilayer rough interfaces based on the small perturbation method (SPM). The proposed method is developed by theoretical analysis and fully formula derivation instead of considering any other approximation and equivalent process. In addition, our proposed method for completeness of SPM can give the general closed-form solution for the problem of radiation and propagation of electromagnetic fields in a hybrid layered structure with an arbitrary number of rough interfaces and planar stratified medium, which is not available in the previous work yet, and it is highly desirable. The demonstration of the consistency of the presented method is analytically provided.