一维指数型导体粗糙面与其上方矩形截面柱的复合电磁散射研究

采用Monte Carlo方法模拟了一维指数型导体粗糙面,运用矩量法研究了一维指数型导体粗糙面与其上方矩形截面柱的复合电磁散射。通过数值计算得到了复合散射系数随散射角和入射波频率的变化曲线,讨论了粗糙面高度起伏均方根、相关长度、矩形截面中心距粗糙面的高度、矩形截面长、矩形截面宽、入射波频率对散射系数的影响,得出了一维指数型粗糙面与其上方矩形截面柱的复合电磁散射特征。结果表明,粗糙面高度起伏均方根、相关长度、矩形截面中心距粗糙面的高度、矩形截面长、矩形截面宽、入射波频率对复合散射系数的影响是比较复杂的。

Study on Composite Electromagnetic Scattering from 1D Exponentform Rough Surface with a Rectangular Cross-section Column above It

One-dimensional exponential rough surface of a conductor is simulated with Monte Carlo method.The composite electromagnetic scattering from one-dimensional exponential conductor rough surface with rectangular cross-section column above it is studied with Method of Moment.The variation curves of composite scattering coefficient with scattering angle and frequency of incident wave are obtained by numerical calculation.The influence of the root mean square and the correlation length of rough surface fluctuation,height from the center of the rectangular cross-section column to the rough surface,length and width of the rectangular cross-section column,frequency of incident wave on the scattering coefficient is discussed.The results show that the effects of the influence factors mentioned above on the composition scattering coefficient are quite complex.