| 紫外通信的大气传输特性模拟研究 |
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| 引用本文： | 蓝天,倪国强.紫外通信的大气传输特性模拟研究[J].北京理工大学学报,2003,23(4):419-423. |
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| 作者姓名： | 蓝天 倪国强 |
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| 作者单位： | 北京理工大学,信息科学技术学院光电工程系,北京,100081 |
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| 基金项目： | 国家部级科研项目;20034030201; |
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| 摘 要： | 利用大气传输模型LOWTRAN对紫外波段的大气传输特性进行了模拟研究，定量考虑了紫外通信系统工作波段的确定，分析了能见度、地理位置、气候季节、传输距离、传播方向、海拔高度和天气情况等对大气紫外透射比的影响。结果指出，紫外通信系统的工作波长应选在日盲区中心点250nm附近，季节、地域和风雨天气对日盲区紫外透射比的影响甚微．水平方向上大气紫外透射比的指数衰减规律决定了系统工作的局域性和保密性．在海拔1km内大气紫外透射比几乎不随高度变化．
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| 关 键 词： | 紫外通信 大气传输 紫外透射比 LOWTRAN |
| 文章编号： | 1001-0645(2003)04-0419-05 |
| 收稿时间： | 4/1/2003 12:00:00 AM |
| 修稿时间： | 2003年4月1日 |
Simulation Research on Ultraviolet Atmospheric Transmission in UV Communication |
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| LAN Tian and NI Guo qiang.Simulation Research on Ultraviolet Atmospheric Transmission in UV Communication[J].Journal of Beijing Institute of Technology(Natural Science Edition),2003,23(4):419-423. |
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| Authors: | LAN Tian and NI Guo qiang |
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| Institution: | Department of Optical Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China;Department of Optical Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China |
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| Abstract: | Ultraviolet (UV) atmospheric transmission is simulated using atmospheric transmission model LOWTRAN. The working wavelength of UV communication system is confirmed numerically. Influences of visibility, geographical position, climate, distances and directions of transmission, altitudes, and weather etc. on the UV atmospheric transmittance are analyzed. The results demonstrate that the solar blind region with a center wavelength around 250 nm should be chosen as the working wavelength of the UV communication system. Seasons, zones, wind and rain have little influence on UV atmospheric transmittance in solar blind region. Exponential attenuation of UV atmospheric transmittance for the horizontal paths decides that the UV communication system works locally and safely. The UV atmospheric transmittance hardly changes vs. altitudes within 1 km above sea level. |
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| Keywords: | UV communication atmospheric transmission UV transmittance LOWTRAN |
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