针对基于矩量法的积分方程时域求解存在的晚时震荡问题,分析两种稳定求解时域积分方程的混合场积分方程方法:隐式时间步进算法的混合场积分方程和基于拉盖尔多项式阶数步进算法的混合场积分方程。计算了目标的时域散射场和单站雷达散射截面,两种方法求得的结果吻合较好,表明两种方法解决时域积分方程晚时震荡问题的有效性。

Analyzing the late-time oscillations problems in solving the TDIE which based on the method of moment.Two stable CFIE in solving the IETD problem were compared,they are implicit CFIE and CFIE which based on the laguerre polynomial;object's thime domain scattering field and mono-station RCS were calculaed.The results fit each other perfectly,which showed that the two type of CFIE are good for solving IETD problems.

TN957

国防预研基金资助项目