Truncation of computational domain for finite-difference methods in time-domain electromagnetics: efficient solution of the problem

The universality of the finite-difference method is generally known and the variety of possible techniques for discretization of original initial-boundary value problems ensures the receptivity of practically any set of parameters. Fundamental questions of difference scheme theory (stability, convergence, etc.) were completely considered within the scope of classical mathematical disciplines. A reasonable use of these advantages while simulating the processes of radiation, propagation, and scattering of nonsinusoidal electromagnetic waves in open regions is possible only under the conditions of efficient truncation of computational domain.