[关键词]
[摘要]
利用图形电磁计算方法,提出了针对高速运动目标电磁散射数据的仿真方法,以宽带线性调频信号为例仿真得到高速空间目标的电磁散射数据,并对宽带仿真数据进行逆合成孔径雷达(ISAR)成像处理。ISAR处理结果表明,电磁散射仿真数据的一维像散射点具有明显的频谱展宽,与理论分析结果完全一致。利用针对高速运动目标的ISAR成像方法,可以得到清晰的目标高分辨像。此外,图形电磁计算方法GRECO计算效率高,可以快速获得目标的宽带散射特性,因此,文中的电磁散射仿真方法具有良好的应用前景。
[Key word]
[Abstract]
Graphical Electromagnetics Compution(GRECO) is very efficient for scattering simulation of complex object,and it is applied to obtaining the broadband radar echo of fast-moving object for different broadband signals.In order to verify the simulation results,2-D ISAR(Inverse Synthetic Aperture Radar) images are obtained by using motion compensation method for fastmoving object and conventional motion compensation method.The high efficiency of GRECO ensures that the method can be applied in the field of radar engineering.
[中图分类号]
TN957.52
[基金项目]
国防科技重点实验室基金资助(51483010205DZ2406)