Edge Diffraction Computing Based on SCTE

The RCS calculation for high frequency large dimension complex targets in SCTE is divided into two parts: facet and edge. Reflection at conducting surfaces can be computed by using PO approximation. When it comes to identify the edges and calculate the edge diffraction, we obtain the edge parameters judging all edges of 2-dimension models presented in the screen which have been sheltered. Diffraction at edges is computed by MEC and PTD. The calculating results of typical targets are consistent with related references and experiment results. It indicates that the judgment method of target edges and obtaining method of edge parameters are feasible