摘要
本文从 Phillip海谱出发 ,分别应用 Monte Carlo方法和分形函数建立了海面的统计模型和分形模型 ,并应用 Kirchhoff近似分别计算了这两种模型的后向散射系数随入射角的变化以及双站散射系数随散射角的变化。结果表明 ,两种模型的电磁散射系数随入射角和散射角的变化曲线均符合较好。说明用分形模型可很好地说明具有 Phillip海谱的实际海面电磁散射回波的幅度特征。
Both statistic and fractal rough sea surfaces o f Phillip power spectrum are genera ted by using Monte Carlo method and fractal f unction. EM scattering coefficients from both the sea surfaces are computed with Kirchhoff approximation. The results show that the curves of EM scattering coef ficient versus incident angle and scattering angle from both models agree well. It indicates that the fractal models can be used to explain the amplitude charac teristics of EM scattering waves with Phillip power spectrum from real rough sea surfaces.
出处
《微波学报》
CSCD
北大核心
2000年第2期144-148,共5页
Journal of Microwaves
关键词
电磁散射
粗糙海面
分形模型
统计模型
Rough sea surface
Fractal
Monte Carlo method
K irchhoff approximation
