Adaptive h-Refinement for the RWG-Based EFIE

An adaptive h-refinement algorithm is investigated for the electric field integral equation applied to a conducting missile target. The process incorporates the advancing front Delaunay algorithm to refine the triangular-cell surface mesh in conjunction with Laplacian smoothing to maintain the mesh quality. The performance of several error estimators used to guide the refinement process is compared. Two of the estimators used within the adaptive refinement procedure work well to improve the accuracy of the computed radar cross section.