摘要
采用一维带限Weierstrass分形函数模拟了粗糙墙面,运用矩量法（MoM）与基尔霍夫近似法（KA）相结合的混合方法研究了分形墙面的电磁波透射特性。首先运用MOM计算了墙内电磁场,再利用KA求解了墙后电磁透射场。数值计算得到了分形墙面透射系数随透射角的变化曲线,确立了墙面几何统计参数、介质参数以及入射波参数与透射系数的依赖关系,得到了分形墙面较完整的电磁透射特性。
A rough wall surface is simulated with an1-D band-limited Weierstrass fractal function.The characteristics of transmitted wave from the fractal wall surface are investigated using a hybrid method of method of moment（MoM）with kirchhoff approximation（KA）.The electromagnetic fields in the wall are calculated by MoM and the transmitted fields behind the wall are solved by KA.Trough numerical simulations,the curves of variation of the transmission coefficient from the fractal wall surface with the transmission angle are calculated,and the dependence of transmission coefficient on the geometric statistic parameter of wall surface,dielectric parameter and incidence wave parameters is established.Moreover,the more complete characteristics of electromagnetic transmission from the fractal wall surface are obtained.
作者
田炜
任文祥
蔺起梅
Tian Wei;Ren Wenxiang;Lin Qimei(College of Physics and Electronic Information,Yah＇ an University,Yan＇ an 716000,China;Yulin Environmental Protection Bureau,Yulin 719000,China)
出处
《电子测量技术》
2018年第12期1-4,共4页
Electronic Measurement Technology
基金
国家自然科学基金(617014280)
陕西省自然科学基础研究计划项目(2014JM-6113)
陕西省教育厅专项科研计划项目(15JK1829)
榆林市科技计划项目(2015JN-29)资助
关键词
电磁透射
分形粗糙墙面
混合方法
矩量法
electromagnetic transmission
fractal rough wall surface
hybrid method
method of moment
