埋地介质地雷电磁散射计算

为降低超宽带合成孔径雷达探雷中地雷检测的虚警,需要根据地雷的电磁散射特J陛设计检测器.把介质地雷等效为双圆柱结构,利用旋转体的结构特征用矩量法计算了半空间地雷的电磁散射,对各个步骤进行了详细分析.最后给出了某型号埋地塑料地雷电磁散射的计算结果,并与相同条件下同型号金属地雷的电磁散射进行了比较,分析了两者的不同特性,结果表明相同条件下介质地雷的散射回波与金属地雷的回波非常相似,但幅度明显小于金属地雷.

Scattering from Buried Dielectric Landmine

The false alarms in detecting landmines is the main problem of the practicality of ultra-wideband synthetic aperture radar (UWB SAR). To reduce the false alarms,the detector should be designed based on the electromagnetic characteristics of the landmine. Dielectric landmine was regarded as a pair of cylinders,scattering from landmine buried in a lossy,dispersive half space was analyzed,and each step of calculating was listed. In the end,the theoretical results between metal and dielectric mines were compared. It shows that the RCS of two mines is similar,but the magnitude of dielectric mine is smaller than that of metal mine.