A time domain unstructured grid approach to the simulation of electromagnetic scattering in piecewise homogeneous media Original Research Article

The simulation of the scattering of plane electromagnetic waves by obstacles constructed from piecewise homogeneous material media is considered. The governing equations are Maxwellʹs equations, which are expressed in a conservation form. The solution is obtained on a grid consisting of an unstructured assembly of linear triangular elements in 2D, by modifying a technique developed originally for the solution of the compressible Euler equations. The computed solution is used to determine the radar scattering width of the obstacle.