箔条云建模与极化特性仿真技术研究

Chaff Cloud Modeling and Research on Technology of Polarization Characteristic Simulation

为分析箔条干扰极化特性以及提高制导雷达基于极化特性差别的抗箔条干扰能力,建立不同密度、形状、分布的箔条云空间模型,将电磁场数值计算方法引入到箔条云极化散射特性的计算,计算结果表明箔条云雷达截面积大小与密度成正比,且满足全极化大于同极化、同极化大于交叉极化的规律,同时计算得到了极化散射矩阵各元素数值。研究结论对于建立真实的模拟战场环境、开展雷达的抗极化干扰实验、改善雷达性能具有重要意义。

In order to analyze polarization characteristics of chaff jamming and improve capability of anti-chaff jamming of guidance radar based on polarization characteristics difference, chaff cloud model of different density, shape and distribution was established, and then, electromaguetic field numerical calculation method was introduced in calculation of chaff cloud polarization scattering characteristics. The calculation results show that the chaff cloud RCS, is proportional to density, and satisfying the law that full-polarization is greater than co- polarization and co-polarization is greater than cross-polarization. At the same time, four elements of the polarized scattering matrix are got. The research conclusions are of great significance for building of real simulation battlefield environment, conducting of radar polarization in- terference experiment and improvement of radar performance.