Fundamentals of the Physical Theory of Diffraction, 2nd Edition

Preface

The physical theory of diffraction (PTD) is a high-frequency asymptotic technique for the investigation of antennas and scattering problems. PTD was announced publically under this name for the first time in a report and a book by Ufimtsev, 1962a,b. An anniversary article (Ufimtsev, 2013a) contains comments on its origination and development. This monograph presents a complete and comprehensive description of modern PTD based on the concept of elementary edge waves. Its basic subject is the diffraction of acoustic and electromagnetic waves by perfectly reflecting objects.

Here are new features of the revised version:

• New Sections 1.3.6 and 1.4.2 establish that the shadow radiation equals zero in the directions of the reflected rays, and the reflected field equals zero in the shadow direction.
• New Sections 1.3.7 and 1.4.3 extend the theory of shadow radiation and reflection to opaque objects.
• New Section 1.5 provides physical interpretations of the shadow radiation via Fresnel diffraction and forward scattering.
• New Section 2.7 develops the “magic zero” procedure to derive fast convergent integrals and uniform asymptotics, which are convenient for numerical and analytic analysis of the canonical wedge diffraction problem.
• Chapter 3 simplifies the physical optics (PO) approximation, introducing new functions .
• New Section 3.3 derives the fast convergent integrals and uniform ...