雨滴在船舶大气激光通信中的遮挡作用

汪亭玉; 陈家璧

doi:10.3788/OPE.20142210.2652

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雨滴在船舶大气激光通信中的遮挡作用

现代应用光学 | 更新时间：2020-08-13

- 雨滴在船舶大气激光通信中的遮挡作用
- Shading effect of rain drops in ship free space laser communication
- 光学精密工程 2014年22卷第10期页码：2652-2658
- 作者机构：
  
  1. 上海理工大学光电信息与计算机工程学院上海,200093
  2. 江苏海事职业技术学院轮机工程系,江苏南京,211170
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目(No.61177043)()
- DOI：10.3788/OPE.20142210.2652
  中图分类号： TN929.1
- 收稿日期：2014-01-20，
  
  修回日期：2014-02-26，
  
  纸质出版日期：2014-10-25
- 稿件说明：
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汪亭玉, 陈家璧,. 雨滴在船舶大气激光通信中的遮挡作用[J]. 光学精密工程, 2014,22(10): 2652-2658

WANG Ting-yu, CHEN Jia-bi,. Shading effect of rain drops in ship free space laser communication[J]. Editorial Office of Optics and Precision Engineering, 2014,22(10): 2652-2658
汪亭玉, 陈家璧,. 雨滴在船舶大气激光通信中的遮挡作用[J]. 光学精密工程, 2014,22(10): 2652-2658 DOI： 10.3788/OPE.20142210.2652.

WANG Ting-yu, CHEN Jia-bi,. Shading effect of rain drops in ship free space laser communication[J]. Editorial Office of Optics and Precision Engineering, 2014,22(10): 2652-2658 DOI： 10.3788/OPE.20142210.2652.

摘要

虽然气候因素和大气本身对船舶大气激光通信系统的性能影响极大

但现有的研究多集中于讨论大气对激光束造成的散射衰减.本文指出在雨中的自由空间光通信主要受雨滴直接遮挡的影响

尤其是雨滴形成的投影间的重叠效应

该效应能够很好地解释大雨甚至暴雨中激光仍能通过的现象.文中结合雨滴尺寸分布模型

建立了船舶大气激光通信中雨滴遮挡作用的数理模型

对光在雨中的最大传输距离及其光强的衰减做了初步计算与实验.结果证明

该衰减模型是合理的

理论模型基本符合实验结果.该项研究为进一步探索船舶大气激光通信系统的性能奠定了基础.

Abstract

Weather conditions and atmosphere have greater influence on the free space Atmospheric Laser Communication (ALC) between the ships. However

most of the research work focus on the discussion on the scattering attenuation of laser beams caused by atmospheric effects. This paper points out that the free space laser communication in raining is influenced by the blotting-out effect of the rain drops mainly

especially the overlapping effect between the projecting areas of rain drops on a receiver. By which

the phenomena that the ALC is achieved within a certain distance in heavy rains is well explained. Based on the raindrop size distribution

a mathematical model of the attenuating effect of rain's blotting-out on the ALC is presented

and the transmitting distance of ALC and the attenuation of the light intensity are calculated. The results show that the model is reasonable and results of the model is coincided basically with that of the experiments. The obtained results provides a basis for research of the performance of ship free space laser communication.

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Keywords

references

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