For computing high-frequency radar cross section (RCS), Graphical Electromagnetic Computing (GRECO) method has some error because of the multi-pass EM scattering.

• 摘要采用图形电磁计算方法对复杂目标进行雷达散射截面(RCS)估计时，由于未考虑多次散射，有时会追成较大误差。