分形粗糙面上方目标电磁散射的双站特性

分形粗糙面上方目标电磁散射的双站特性 INVESTIGATION OF THE BISTATIC ELECTROMAGNETIC SCATTERING CHARACTERISTICS FROM A PLATE OVER THE FRACTAL ROUGH SURFACE 高火涛 Gao Huotao 1 2 first-author 徐鹏根 Xu Penggen 1 2 鲁述 Lu Shu 1 2 吴正娴 Wu Zhengxian 1 2 武汉大学电子信息学学院,武汉 武汉大学电子信息学学院,武汉 College of Electrical and information, Wuhan University College of Electrical and information, Wuhan University ,430072 ,430072 利用分形函数模拟海地粗糙表面，研究了目标与粗糙面的复合散射机制，并采用克希霍夫近似法分析了粗造面与其上方目标的双次反弹散射场，较详细地研究了目标与粗糙面的双次反弹双站RCS与入射角和表面粗糙度以及极化特性的关系．数值结果显示了一些有意义的结论． The double bounce physical mechanism for the bistatic electromagnetic scattering from a plateover the rough surface is discussed in detail. The surface is modelled by use of a fractal function. The interactionbetween the target and the rough surface is represented to be the double bounce by using the Kirchhoff approximation. Some factors,such as the roughness,incident angle and polarization,are investigated which influence oncomposite scattering characters between the target and the rough surface. The numerical results indicate that themethod is effective to solve the problem of the composite scattering between the target and the rough surface. 粗糙表面 分数维 双次反弹散射 克希霍夫近似解 双站RCS rough surface fractal dimension double bounce scattering the Kirchhoff approximation bistatic RCS TN95 国家自然科学基金(61672102) 1998-05-01 2021-04-01 5