两种湿沙颗粒电磁散射特性求解模型的比较研究

Comparison Research Between Two EM Scattering Models for Wet Sand Particle

根据含水沙粒的等效球体模型和涂覆介质球体模型,分别计算了湿沙的电磁散射效率和消光效率,并对两种模型所得结果进行了比较.结果表明,等效球体模型和涂覆球体模型所得结果存在显著的差异,在考虑到水的频散效应时这种差异甚至可达数十倍之多,且随着沙粒含水量的增加,两种模型所得结果呈现完全不同的变化趋势.由此说明,在对湿沙的电磁散射性质求解的过程中应该谨慎选择计算模型.

Based on the e of wet sand are calculate qu d, ivalent sphere model and the coated sphere model, the EM scattering properties and the results derived from these two models are made. The results show that there are significant differences between these two models, and if we considered the dispersion effect, the difference even up to ten times. In addition, we also concluded that with the increasing of sand moisture content, the results from these two models show different changing trends. So we must carefully choose the calculation model when calculating the EM scattering of wet sand particle.