水包冰球包层粒子散射特性的研究

Research on scattering characteristics of water-coated ice spheres particles

基于Mie散射和Aden-Kerker散射理论,利用Matlab仿真模拟工具,分析了水包冰球包层粒子在红外波段、太赫兹波段及毫米波段的散射特性。研究表明,水包冰球包层粒子在这三个波段的散射能力与包层粒子的内外径比有很大关系,水包冰球粒子的复折射率在三个波段随着频率的增大呈线性变化,但在毫米波段的实部变化不大;随着包层粒子的内外径比的不断增大,其散射强度、散射参数在红外波段和太赫兹波段不断增大,在毫米波段则减小。研究结论可对红外波、太赫兹和毫米波的气象应用以及相关检测技术提供参考。

In the ranges of infrared wave,terahertz wave and millimeter wave,the scattering characteristics of water-coated ice spheres particles are analyzed by Matlab software based on the theory of Mie scattering and Aden-Kerker scattering.Results show that the influence of the radius of the water-coated ice sphere particle on scattering ability is obvious;when increasing the frequency,the complex refractive index becomes higher,but the real part of the complex refractive index do not change in the millimeter wave range.In the ranges of infrared wave and terahertz wave,when increasing the ratios of inner and outer radius of water-coated ice sphere particle,scattering intensity and scattering parameters will also increase,but in the millimeter wave range they decreases.The results can provide a reference on the meteorological detection and related research.