Inverse scattering via nonlinear integral equations method for a sound-soft crack with phaseless data

[摘要] We consider the inverse scattering of time-harmonic plane waves to reconstruct the shape of a sound-soft crack from a knowledge of the given incident field and the phaseless data, and we check the invariance of far field data with respect to translation of the crack. We present a numerical method that is based on a system of nonlinear and ill-posed integral equations, and our scheme is easy and simple to implement. The numerical implementation is described and numerical examples are presented to illustrate the feasibility of the proposed method.

[学科分类] 应用数学

[关键词] inverse scattering problem;Helmholtz equation;crack;phaseless;translation invariance