一维指数型粗糙土壤表面电磁散射的矩量法研究

运用矩量法研究了锥形波入射一维指数型粗糙土壤表面的电磁散射。通过数值计算得到了散射系数随散射角的变化曲线。讨论了粗糙面高度起伏均方根、相关长度、土壤湿度、入射波频率对散射系数的影响。得出一维指数型土壤表面散射系数的基本特征和随频率变化特征。结果表明,高度起伏均方根、相关长度、土壤湿度、入射波频率对粗糙面散射系数有显著影响。

Study on Electromagnetic Scattering from Expnential Rough Soil Surface Using the Method of Moments

The electromagnetic scattering from1D exponential rough dielectric soil surface with the taperd wave incidence is studied using Method of Moment. The curves of electromagnetic scattering coefficient with scattering angle are obtained by numerical calculation. The influence of the root mean square and the correlation length of rough surface fluctuation, moisture of soil, the frequency of incident wave on the scattering coefficient is discussed and the basic characteristics and the characteristics with varying of frequency of scattering coefficient from 1D exponential rough dielectric soil surface is obtained. The results show that the influence of the root mean square and the correlation length of rough surface fluctuation, moisture of soil, the frequency of incident wave on the scattering coefficient of the rough surface is obvious.