High-efficiency numerical computing in low-grazing scattering from sea surface using resistive tapering and forward-backward method

The application of tapered resistive sheet with a incident plane wave to remove edge effects and to reduce the surface length at low-grazing angle in electromagnetic scattering from sea surfaces with finite conductivity has been considered. The use of the forward-backward method that has shown a very fast convergence and sufficiently accurate results, made it computationally effective. The integral equation formulations using impedance boundary condition was used to model the conductivity of sea surface. The combination of the resistive loading technology and the forward-backward method increasingly improved the computational efficiency and made it possible to calculate rapidly sea surface electromagnetic scattering at low grazing angle through the low-frequency method.