复杂目标GRECO方法的分屏显示计算

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.基于GRECO法,针对用各种通用商业软件造型生成的模型文件,利用商业软件Rhino进行转化,生成适于RCS计算的数据文件,这种处理数据的方法具有广泛的适用性,且不会丢失任何局部细节.通过分屏显示计算方法,提高了对电大尺寸目标的计算精度;采用OpenGL的显示列表技术使得程序运行花费较少的时间.结合GRECO的特点,提出了一种分析目标散射源的简便的方法,便于分析目标的雷达散射截面特性.结果表明,本方法与面劈法的计算结果吻合较好,具有较好的工程应用价值.

Multi-screen display calculation method of GRECO for complex targets

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.Based on the GRECO,the model file generated by several commercial shaping software could be converted to the type fitting for the RCS calculation by means of the commercial software RHINO.The processing method of data had a wide use and may not delimit any details of model.The multi-screen display calculation method was used to improve the precision of calculation when predicting the RCS of electrically large and full size targets.By using display list technology of OpenGL,the program expended less time than before.A simple approach was also presented by which the scattering source of targets can be analyzed expediently.The good agreement between the calculating results of our method and that of plate-edge method indicates that this method possesses practical value in engineering.