Friday, May 10, 11:00AM-12:00 Noon, Conference room

May 03, 2019 by Duan Chen
Categories: Spring 2022
Professor Dinh-Liem Nguyen  Department of Mathematics, Kansas State University
Title: Direct and Inverse Electromagnetic Scattering Problems for Bi-Anisotropic Media
Abstract. We present in this talk our study on direct and inverse scattering of time-harmonic electromagnetic waves from bi-anisotropic media. For the direct problem, we study an integro-differential equation formulation, its Fredholm property, and uniqueness of weak solution. Using this integro-differential formulation we present a fast spectral Galerkin method for the numerical solution to the direct problem. We solve the inverse problem of recovering bi-anisotropic scatterers from far field data using orthogonality sampling methods. These methods aim to construct imaging functionals which are robust with noise, computationally cheap, and require data for only one or a few incident fields.