| 雾天环境下激光传输的衰减特性研究 |
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| 引用本文： | 王亚民,高国强. 雾天环境下激光传输的衰减特性研究[J]. 红外, 2013, 34(12): 14-19 |
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| 作者姓名： | 王亚民 高国强 |
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| 作者单位： | 西安科技大学通信与信息工程学院,西安科技大学通信与信息工程学院 |
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| 基金项目： | 陕西省自然科学基础研究计划资助项目(项目批准号2013JM8004) |
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| 摘 要： | 激光在大气中传输时容易受天气的影响,因为雨、雪、雾等恶劣天气对激光有严重的衰减作用,会使通信的稳定性变差.因此分析激光在不同天气条件下的传输效应和衰减特性非常有必要.本文根据辐射雾和平流雾中含水量和能见度的经验关系,分析了雾天气对激光大气传输衰减的计算公式,并对三种常用的雾衰减经验模型进行了Matlab数值仿真,得出了激光衰减系数和雾天气能见度的关系.
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| 关 键 词： | 激光 能见度 衰减率 雾 |
| 收稿时间： | 2013-11-20 |
| 修稿时间： | 2013-11-27 |
Study of Attenuation Characteristics of Laser Propagation in Fog |
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| WANG Ya-min and GAO Guo-qiang. Study of Attenuation Characteristics of Laser Propagation in Fog[J]. Infrared, 2013, 34(12): 14-19 |
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| Authors: | WANG Ya-min and GAO Guo-qiang |
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| Affiliation: | Communication and Information Engineering Institute,Xi 'an University of Science and Technology,Communication and Information Engineering Institute,Xi 'an University of Science and Technology |
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| Abstract: | Laser is susceptible to weather when it is propagating in atmosphere. This is because the severe weather including rain, snow and fog has a great attenuation function to laser and may cause the communication to be poor. So, it is necessary to analyze the transmission effect and attenuation characteristics of laser under different weather conditions. According to the experience relations of water content and visibility in radiation fog and advection fog, the formulas for calculating the transmission attenuation of laser in atmosphere under the fog weather condition are analyzed. Three typical empirical models for fog attenuation are simulated numerically by Matlab and the relationship of the visibility in fog with the attenuation coefficient of laser is obtained. |
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| Keywords: | laser visibility attenuation rate fog |
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