预处理结合AWE技术求解导体目标RCS

An Effective Method for Solving Wideband RCS Based on AWE and Preconditioning Technique

采用渐近波形估计技术(AWE)和预处理技术求解导体目标的宽带雷达散射截面(RCS)。应用矩量法求解导体目标的电场积分方程,通过构造预条件算子,使由矩量法得到的阻抗矩阵稀疏化,从而计算导体表面电流时变得简便,再结合渐近波形估计(AWE)技术计算导体目标的宽带雷达散射截面(RCS)。实例结果表明,该方法在计算电大导体目标时具有较高的计算效率和很好的精度。

An effective method,based on AWE and preconditioning technique,is used for solving wideband radar cross section（RCS） of PEC objects in this paper.Firstly,the electric field integral equation（EFIE） of the PEC cylinder is solved by using the method of moments（MOM）.Then impedance matrix is sparsified by using precondition operator,so it＇s much easier to obtain the surface current on the PEC cylinder.The RCS of the two-dimensional PEC cylinder can be calculated by using AWE technique.It is shown that the presented method could result in considerable CPU time saving,especially for electrically large conductor object.