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沙尘暴对太赫兹波传播的影响
Effect of sand and dust storms on Terahertz electromagnetic wave propagation characteristics
投稿时间:2018-03-08  修订日期:2018-05-21
中文关键词:太赫兹波  沙尘  散射  衰减
英文关键词:terahertz wave  sand and dust  scattering  attenuation
基金项目:国家自然科学基金资助项目(61102018);中国博士后基金资助项目(2014M562371);陕西省自然科学基础研究资助项目(2014JM8312);咸阳师范学院青蓝计划人才培养资助项目(XSYQL201609)
作者单位
董群锋 1.Department of Physics and Electronic EngineeringXianyang Normal UniversityXianyang Shaanxi 712000China2.School of Physics and Optoelectronic EngineeringXidian UniversityXi’an Shaanxi 710071China 
郭立新 School of Physics and Optoelectronic EngineeringXidian UniversityXi’an Shaanxi 710071China 
李应乐 Science and Technology DepartmentShaanxi Xueqian Normal UniversityXi’an Shaanxi 710100China 
王明军 Department of Physics and Electronic EngineeringXianyang Normal UniversityXianyang Shaanxi 712000China 
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中文摘要:
      为研究太赫兹波在沙尘暴中的传播特性,应用Mie散射理论研究了太赫兹波段沙尘粒子的散射特性,得到沙尘粒子的散射效率因子、消光效率因子和吸收效率因子随粒径、太赫兹波长的变化关系。基于沙尘粒子尺寸的对数正态分布,数值计算了沙尘暴的太赫兹衰减。研究结果表明,沙尘的衰减随能见度的增大而减小,波长越小,沙尘暴引起的太赫兹波衰减越大;波长为40 μm时,沙尘暴对太赫兹波传播影响最大,浮尘对太赫兹波传播影响最小。低能见度沙尘暴对太赫兹波传播影响明显。
英文摘要:
      To research the propagation characteristics of terahertz wave in sand and dust storms,based on Mie theory, the scattering characteristics of sand/dust particles are investigated for terahertz wave band, and the relationships of scattering efficiency factor, extinction efficiency factor and absorption efficiency factor with particle size and terahertz wavelength are obtained. The attenuation characteristic of terahertz electromagnetic wave propagation in sand and dust storms are calculated for sand and dust particles with log-normal size distribution. The research results show that the wave attenuation decreases with the increase of visibility of sandstorms and terahertz wavelength. From the numerical results of different sand weather at a wavelength of 40 μm, it is shown that sand-dust storm yields the highest effect for terahertz electromagnetic wave propagation, while the natural sand gives the lowest effect. The effect of low visibility sand and dust storms on terahertz wave propagation is obvious.
引用本文:董群锋,郭立新,李应乐,王明军.沙尘暴对太赫兹波传播的影响[J].太赫兹科学与电子信息学报,2018,16(4):599~602
DOI:10.11805/TKYDA201804.0599
学科分类代码:
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