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本文运用物理光学法(PO)和等效电磁流法(EMC)分析和计算了平板、多面体及某船体等复杂目标的近区单站RCS。作为例子,文中给出了一些目标的“近区”和“远区”单站RCS的比较。数值结果表明:目标“近区”和“远区”的单站RCS特性存在差异,而且这种差异随着目标形体复杂程度的增加而增加,其近区单站RCS特性亦变得复杂起来。该结果可为军用目标近区RCS的预估、雷达截面的减缩、隐身与反隐身、对抗与反对抗、目标别识、目标散射特性的缩比研究和远近场变换等相关的电磁工程技术实验和理论研究提供一定的理论依据。
In this paper, the near-zone single-station RCS with complex targets such as slabs, polyhedrons and some hull are analyzed and calculated using physical optics (PO) and equivalent electromagnetic flow (EMC). As an example, some target RCSs of “near” and “far” single stations are given. The numerical results show that there are differences in the single-station RCS characteristics of the target “near” and “far” regions, and the difference increases with the complexity of the target shape, and the RCS characteristics of the single-station near the region also become complicated. This result can be used to estimate the RCS in the vicinity of the military target, reduce the cross-section of radar, stealth and anti-stealth, confrontation and anti-objection, target recognition, shrinkage ratio of target scattering characteristics and electromagnetic engineering technology experiment And theoretical research to provide some theoretical basis.