A hybrid approach to solving the problem of diffraction by plane screens

Abstract

A new version of the method of continued boundary conditions is proposed for solving the prob lem of diffraction of a plane wave by a plane three dimensional screen whose size is large compared to the wavelength. The cases of acoustically soft and rigid screens are considered. Numerical results are presented for circular, elliptic, and square screens. The fulfillment of the optical theorem and the Ufimtsev theorem for the aforementioned screen shapes is verified.