Radiowave Propagation prediction in the Presence of Multiple Knife Edges using 3D Parabolic Equation Method

In this paper, a 3-D wide-angle parabolic wave equation (3DPE) method is applied to calculate the propagation factor over the flat terrain. A 3-D forward propagating wave is considered by using the Fourier split-step (FSS) method to march the solution along the direction of propagation. A row of perfectly electrically conducting (PEC) knife-edges with uniform height and spacing is used to calculate the lateral wave diffraction effect. A Hamming window is used to attenuate the fields smoothly at the upper boundary without reflections. The formulation of 3DPE is discussed briefly, which is followed by the FSS method and its corresponding numerical implementation. The simulation results are compared with the 2D parabolic equation 2 (DPE) model and the results presented in the literature.