摘要
应用时域有限差分方法研究了各向同性均匀雪层覆盖的粗糙土壤表面电磁散射特性,计算了分层介质随机粗糙面散射的双站散射系数,得出了散射系数随散射角和入射波频率变化的曲线,讨论了散射系数随分层介质粗糙土壤表面高度均方根、相关长度、雪层厚度、雪层类型、土壤湿度、入射波频率等参数对散射系数的影响,得到了各向同性均匀雪层覆盖的粗糙土壤表面电磁散射的特性。
The characteristics of electromagnetic scattering from rough soil surface covered with isotropy and well-proportioned snow is studied using FDTD,the bistatic scattering coefficient from random rough surface with layered medium is calculated,the curves of scattering coefficient with varying scattering angle and the frequency of incident wave is obtained,the influence of the root mean square and correlation length of rough soil surface with layered medium,the depth of snow,the type of snow,the moisture capacity of soil,and the frequency of incident wave on the bistatic scattering coefficient is discussed,the characteristics of electromagnetic scattering from rough soil surface covered with isotropy and well-proportioned snow is obtained.
出处
《电子测量技术》
2011年第1期5-11,共7页
Electronic Measurement Technology
关键词
电磁散射
粗糙土壤表面
雪
FDTD
electromagnetic scattering
the rough soil surface
snow
FDTD