整体目标中局部电磁流产生的RCS仿真分析

Simulation and Analysis of RCS Produced by Local Electromagnetic Currents in Global Targets

本文依据雷达散射截面(RCS)的计算原理,利用高阶矩量法(HO-MoM)的后处理数据,实现了整体目标中,局部电磁流产生的RCS计算与分析。本文借助HO-MoM能够精确计算电大尺寸目标的优势,对一整架飞机进行了RCS计算。后处理时提取其中若干区域的电磁流分别求电场,进而算出产生的局部RCS。对于局部电磁流产生RCS的分析,将为后续RCS有针对性的减缩提供参考价值。本文考虑到不同区域之间的耦合,并不将局部从整体中剥离,保证了电流连续性。该研究对于隐身目标的散射特性分析具有一定意义。

In this paper, by using the post-processing data of higher-order method of moments(HO-MoM), radar cross section(RCS) produced by local electromagnetic currents in global target is calculated and analyzed according to principles of calculating RCS. With the advantage of HO-MoM that objects of large electric size can be accurately calculated, RCS of a whole plane is calculated in this paper. Electromagnetic currents in several areas are extracted to respectively calculate the electric field in the post-processing, thus figuring out the local RCS. Analysis of RCS produced by local electromagnetic currents provides reference value for subsequent targeted RCS reduction. Coupling between different areas is taken into consideration in this paper. As a result, local areas are not separated from the whole target, remaining the current continuity. This study is important for the scattering characteristics analysis of stealth targets.