Doicu Adrian, Mishchenko Michael I
Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Methodik der Fernerkundung (IMF), Oberpfaffenhofen 82234, Germany.
NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025, USA.
J Quant Spectrosc Radiat Transf. 2019 Oct;236. doi: 10.1016/j.jqsrt.2019.07.008. Epub 2019 Jul 8.
The problem of backscattering of light by a discrete random medium illuminated by an obliquely incident plane electromagnetic wave is considered. The analysis is performed in a linear-polarization basis and includes (i) a complete derivation of the cross reflection matrix for a layer with densely and sparsely distributed particles, (ii) the design of an approximate method for computing the ladder and cross reflection matrices in the case of a semi-infinite medium with a sparse distribution of particles, (iii) the derivation of the relations between the elements of the ladder and cross reflection matrices in the exact backscattering direction for dense and sparse media, and (iv) the development of practical algorithms for solving the underlying integral equations by the method of Picard iterations and the discrete ordinate method. Simulation results for particles with large size parameters are also presented.
研究了由倾斜入射平面电磁波照射的离散随机介质的光背向散射问题。分析是在线性偏振基下进行的，包括：（i）对具有密集和稀疏分布粒子的层的交叉反射矩阵进行完整推导；（ii）设计一种近似方法，用于计算具有稀疏分布粒子的半无限介质情况下的阶梯反射矩阵和交叉反射矩阵；（iii）推导密集和稀疏介质在精确背向散射方向上阶梯反射矩阵和交叉反射矩阵元素之间的关系；（iv）开发通过皮卡德迭代法和离散纵坐标法求解基础积分方程的实用算法。还给出了大尺寸参数粒子的模拟结果。
