中文摘要：

在植被层的微波散射和衰减过程中,研究玉米作物在高频率下的前向散射系数α.利用改进的积分方程模型、物理光学近似理论来计算单散射体的散射和衰减矩阵,并利用双矩阵算法,计算植被层内部以及植被跟地表之间的多次散射效应.同时在零阶模型的基础上,引入有效单散射反照率R有效,准确得到了C（6.925GHz）、X（10.65GHz）波段下植被散射体的性质以及对微波散射的影响.通过δ函数近似找出单散射反照率R和R有效之间的关系,即前向散射系数.

英文摘要：

Forward scattering coefficient was investigated in order to evaluate scattering and attenuation characteristics of corn at high frequency.Scattering and attenuation matrix were evaluated with Advanced Integral Equation Model（AIEM）,Physical-Optics.Multiple scattering was then evaluated by matrix-doubling.Effective single scattering albedo based on the ω-τ model was used to evaluate scattering and attenuation characteristics of vegetation in C and X bands.Delta function approximation was then used to obtain correlation between effective single scattering albedo and single scattering albedo,i.e.,the forward scattering coefficient of corn.