WAVE DIFFRACTION BY A THIN INCLUSION WITHIN A 2-LAYER WAVE-GUIDE

A process of diffraction of wave fields excited from the initial time by a monochromatic source by a thin inclusion within a two-layer medium is studied on the basis of further development of the factorization technique. The effect of the inclusion length and its submersion depth on scattered field intensity is analyzed. The research results taking account of the influence of layered medium plane boundaries generalize the known data(1,2) established for unrestricted media, as differentiated from analytical relationships(3,4) obtained for the stabilized case for a more general model of scattering inclusion. The paper considers unstabilized processes of re-reflections and determines the character of establishment of the diffracted field.