一种基于解析积分的TDPO算法及其在散射问题中的应用

A TDPO algorithm based on analytic integral and its application in scattering problems

基于时域物理光学(Time-domain Physical Optics,TDPO)方法,给出了三角面元剖分下散射场解析计算的求解思路.对三角面元进行二重积分求得散射场计算的最终表达式.与传统的TDPO方法相比,在同等计算模型下,解析方法具有更高的计算精度.在处理高频复杂问题时,解析方法可以用更少的面元数量参与计算,从而节省大量的计算时间与计算机内存.

Based on the time-domain physical optics（TDPO）algorithm,the method for the analytic scattering field of the triangular surface element is given in this paper.The expression for the calculation of the scattering field is obtained by the double integral of the triangular surface element.Compared with the traditional TDPO method,this method has a higher accuracy.In dealing with the problem of high frequency and complex target,this method requires less triangle surface elements,and can save computation time and computer memory.