Monte Carlo simulation of rough surface scattering using a modified pseudospectral time‐domain method. Free

A pseudospectral time‐domain (PSTD) method using a surface flattening transformation and image method is applied to a randomly rough pressure‐release surface scattering problem. Above, the PSTD method efficiently avoids the Gibbs phenomenon appearing in the conventional PSTD method when treating irregular boundaries with large impedance contrast. The pressure‐release surface is generated by Pierson–Moskowitz spectrum and Monte Carlo method is used to calculate the statistical properties of the rough surface. The Monte Carlo results for elemental scattering area will be investigated by comparing with Chapman–Harris formula.