- 必威体育下载

姓名
邮箱
手机号码
标题
留言内容
验证码

摘要

太赫兹波空间传输特性研究对于太赫兹波在空间中的应用具有重要意义. 为研究太赫兹波在沙尘暴天气中的传输特性, 本文根据沙尘粒子尺度的对数正态分布, 应用Mie散射理论和Monte Carlo方法, 分析了国内不同地域的六种干沙模态沙尘暴对1—10 THz频段太赫兹波的衰减特性, 给出了消光参量和衰减率与频率的关系. 结果表明, 随着频率的增大, 1—10 THz频段太赫兹波的衰减率呈先增加后减小的趋势, 沙尘暴的模态不同, 太赫兹波衰减较强的频段范围有所不同. 为了分析沙粒含水量对太赫兹波传输衰减的影响, 计算了不同尺寸的沙尘粒子3个效率因子与含水量的关系, 发现粒子尺寸不同, 含水量对消光的影响也不同; 应用Monte Carlo方法计算了两种湿沙模态的沙尘暴对1—10 THz频段太赫兹波的衰减, 给出了衰减率与含水量及频率的关系. 结果表明, 随沙粒含水量增大, 沙尘暴对太赫兹波衰减较强的频段向低频方向移动, 含水量小于5%时, 太赫兹波衰减率随含水量增大显著增强, 湿度较大的沙尘暴天气对太赫兹波的传输衰减影响更大.

关键词:

Abstract

The research on space transmission characteristics of terahertz wave is of great significance for the application of terahertz wave in space. In order to study the transmission characteristics of terahertz wave in sand and dust storm weather, according to the lognormal distribution of dust particle sizes, Mie scattering theory and Monte Carlo method are used to analyze the attenuation characteristics of six dry sand modes of sand and dust storm in different regions of China in a frequency band of 1–10 THz, and the relationship of the extinction parameters and attenuation rate to the frequency is given. The results show that with the increase of frequency, the attenuation rate of 1–10 THz terahertz wave first increases and then decreases. Different mode of sand and dust storm leads to different frequency range of strong attenuation of terahertz wave. In order to analyze the influence of sand dust particle moisture content on terahertz wave propagation attenuation, the relationship of three efficiency factors to water content of sand dust particles with different sizes is calculated. The results show that the influence of water content on extinction is different from that of the particle size. Monte Carlo method is used to calculate the attenuation of terahertz wave by sand and dust storm in two kinds of wet sand modes, and the relationship of the attenuation rate and water content to the frequency is given, the results are compared with those from the dry sand mode, showing that the albedo of wet sand mode is obviously lower than that of dry sand mode with the same size distribution. The absorption of wet sand particles increases with water content increasing. The extinction of wet sand and dust storm results from scattering and absorption. With the increase of water content in sand particles, the frequency band with strong attenuation of terahertz wave by wet sand and dust storm moves toward low frequency. When the water content is less than 5%, the attenuation rate of terahertz wave increases significantly with the increase of water content. Sand and dust storms with higher humidity have a greater influence on the transmission attenuation of terahertz wave.

Keywords:

作者及机构信息

通信作者:王红霞,redlightw@163.com

Authors and contacts

Corresponding author:Wang Hong-Xia,redlightw@163.com

文章全文: translate this paragraph

参考文献

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]

施引文献

下载: 全尺寸图片幻灯片

Sand source	m₀	σ
Loess	–3.08	0.491
Maowusu	–2.96	0.380
Tengger	–2.31	0.296
Taklimakan	–2.26	0.276
Gansu	–2.19	0.279
Coast	–1.83	0.166

下载: 导出CSV

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]

[1]	陈乐迪, 范仁浩, 刘雨, 唐贡惠, 马中丽, 彭茹雯, 王牧.基于柔性超构材料宽带调控太赫兹波的偏振态. 必威体育下载 , 2022, 71(18): 187802.doi:10.7498/aps.71.20220801
[2]	彭晓昱, 周欢.太赫兹波生物效应. 必威体育下载 , 2022, (): .doi:10.7498/aps.71.20211996
[3]	宁辉, 王凯程, 王少萌, 宫玉彬.强场太赫兹波作用下氢气分子振动动力学研究. 必威体育下载 , 2021, 70(24): 243101.doi:10.7498/aps.70.20211482
[4]	彭晓昱, 周欢.太赫兹波生物效应. 必威体育下载 , 2021, 70(24): 240701.doi:10.7498/aps.70.20211996
[5]	陈伟, 郭立新, 李江挺, 淡荔.时空非均匀等离子体鞘套中太赫兹波的传播特性. 必威体育下载 , 2017, 66(8): 084102.doi:10.7498/aps.66.084102
[6]	胡帅, 高太长, 李浩, 刘磊, 程天际, 张婷.大气折射对可见光波段辐射传输特性的影响. 必威体育下载 , 2015, 64(18): 184203.doi:10.7498/aps.64.184203
[7]	胡帅, 高太长, 刘磊, 易红亮, 贲勋.偏振光在非球形气溶胶中传输特性的Monte Carlo仿真. 必威体育下载 , 2015, 64(9): 094201.doi:10.7498/aps.64.094201
[8]	司黎明, 侯吉旋, 刘埇, 吕昕.基于负微分电阻碳纳米管的太赫兹波有源超材料特性参数提取. 必威体育下载 , 2013, 62(3): 037806.doi:10.7498/aps.62.037806
[9]	焦学敬, 欧阳方平, 彭盛霖, 李建平, 段吉安, 胡友旺.碳纳米管对接成异质结器件的计算模拟. 必威体育下载 , 2013, 62(10): 106101.doi:10.7498/aps.62.106101
[10]	梁善勇, 王江安, 宗思光, 吴荣华, 马治国, 王晓宇, 王乐东.基于多重散射强度和偏振特征的舰船尾流气泡激光探测方法. 必威体育下载 , 2013, 62(6): 060704.doi:10.7498/aps.62.060704
[11]	梁善勇, 王江安, 张峰, 吴荣华, 宗思光, 王雨虹, 王乐东.基于舰船尾流激光雷达的Monte Carlo模型及方差消减方法研究. 必威体育下载 , 2013, 62(1): 015205.doi:10.7498/aps.62.015205
[12]	赵太飞, 柯熙政.Monte Carlo方法模拟非直视紫外光散射覆盖范围. 必威体育下载 , 2012, 61(11): 114208.doi:10.7498/aps.61.114208
[13]	陆金星, 黄志明, 黄敬国, 王兵兵, 沈学民.相位失配与材料吸收对利用GaSe差频产生太赫兹波功率影响的研究. 必威体育下载 , 2011, 60(2): 024209.doi:10.7498/aps.60.024209
[14]	王玥, 吴群, 吴昱明, 傅佳辉, 王东兴, 王岩, 李乐伟.碳纳米管辐射太赫兹波的理论分析与数值验证. 必威体育下载 , 2011, 60(5): 057801.doi:10.7498/aps.60.057801
[15]	李忠洋, 姚建铨, 李俊, 邴丕彬, 徐德刚, 王鹏.基于闪锌矿晶体中受激电磁耦子散射产生可调谐太赫兹波的理论研究. 必威体育下载 , 2010, 59(9): 6237-6242.doi:10.7498/aps.59.6237
[16]	张戎, 曹俊诚.光子晶体对太赫兹波的调制特性研究. 必威体育下载 , 2010, 59(6): 3924-3929.doi:10.7498/aps.59.3924
[17]	王玥, 吴群, 施卫, 贺训军, 殷景华.基于纳观域碳纳米管的太赫兹波天线研究. 必威体育下载 , 2009, 58(2): 919-924.doi:10.7498/aps.58.919
[18]	张玉萍, 张会云, 耿优福, 谭晓玲, 姚建铨.太赫兹波在有限电导率金属空芯波导中的传输特性. 必威体育下载 , 2009, 58(10): 7030-7033.doi:10.7498/aps.58.7030
[19]	孙红起, 赵国忠, 张存林, 杨国桢.不同中心波长飞秒脉冲激发InAs表面辐射太赫兹波的机理研究. 必威体育下载 , 2008, 57(2): 790-795.doi:10.7498/aps.57.790
[20]	姚细林, 王新兵, 赖建军.微空心阴极放电的Monte Carlo模拟研究. 必威体育下载 , 2003, 52(6): 1450-1454.doi:10.7498/aps.52.1450

计量

文章访问数:4863
PDF下载量:81
被引次数:0

搜索

留言板