目标电磁散射特性的混合法研究

Analysis on Electromagnetic Scattering Characteristics of Objects by Hybrid Method

从Ｓｔｒａｔｔｏｎ－Ｃｈｕ公式出发，利用阻抗边界条件，得出阻抗边界条件积分方程。将目标表面分成不同的区域，有些区域用高频解析方法求出其表面电流，有些区域利用矩量法解阻抗边界条件积分方程得表面电流。本文以橄榄体（包括介质涂敷情形）为例，计算其电磁散射特性，混合法计算结果与实测结果或其他方法的计算结果比较吻合。

Through the Stratton-Chu formula and the impedance boundary condition, the integral equation of impedance boundary condition has been derived. The surface of an object is divided into several regions. The surface electric currents on some regions are obtained by high frequency analytic methods, and the surface electric currents on other regions are obtained by solving the integral equation of impedance boundary condition by moment method. As an example, the electromagnetic scattering characteristics of ogives (including the ogives coated with dielectric )have been calculated. The results calculated by hybrid method have been compared with measurements or the results calculated by other methods, and the results calculated by hybrid method are in agreement with the other results.