摘要
本文研究了冰雪样品的相关函数及其相关长度与等效球形冰粒子有效平均半径的对应关系;利用密集粒子的矢量辐射传输方程,数值计算了包括多次散射的一层冰雪的微波热辐射,并与星载遥感的实验测量结果进行了比较和讨论。
By using an image of snow sample, the correlation function and correlation length were obtained experimentally. Then the effective radius of discrete spherical scat-terer in the radiative transfer model was determined. By solving the vector radiative transfer equation for a slab of densely-distributed scatterers, the polarized brightness temperatures, including multiple scattering effect, from a layer of snow were numerically calculated, and favorably compared with the measurements from spaceborne remote sensing.
基金
国家自然科学基金资助课题
霍英东教育基金会资助课题
关键词
电磁波
散射
相关长度
积雪
热辐射
Electromagnetic wave scattering
Correlation length
Scattering and emission from snowpack
Radiative transfer of dense scatterers
