摘要
发展了一种产生三维随机粗糙表面的方法，此方法基于数字滤波的概念，且使表面的自相关函数任意可调．检验结果表明这种方法是有效的．用Ｋｉｒｃｈｈｏｆｆ近似计算了产生的各向同性和各向异性随机表面的电磁散射．将计算结果和公认正确的Ｋｉｒｃｈｈｏｆｆ级数解相比较，证明了Ｋｉｒｃｈｈｏｆｆ近似的正确性，也更进一步证实了产生随机表面方法的有效性．最后。
A technique for generating 3-dimensional random rough surface with any prescribed autocorrelation function based upon the concept of digital filtering has been developed in this paper.The examination results indicate the validity of this algorithm.Backscattering coefficients from the generated isotrapic and anisotropic surfaces were calculated under the Kirchhoff approximation. The results are then compared with the well established Kirchhoff series solution.The comparison verifies both the validity of the Kirchhoff approximation and the efficiency of the technique for generating 3D random suraface.Finally,the effects of several parameters on electromagnetic scattering were examined.
出处
《地球物理学报》
SCIE
EI
CSCD
北大核心
1994年第A02期57-64,共8页
Chinese Journal of Geophysics
关键词
随机粗糙表面
电磁散射
仿真
近似计算
海面
dimensional random rough surface
Electromagnetic scattering
Kirchhoff approximation
Simulation.
