Graphical electromagnetic computing(GRECO) is an effective method of predicating the radar cross section(RCS) of complex targets,but there must beforehand be a model file from which the shape parameter can be easily obtained.

• 图形电磁计算(GRECO)是一种计算复杂目标雷达散射截面(RCS)的有效方法；但必须先有一个易于提取外形参数的数据文件.