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双向大气信道激光传输的信道互易性研究

刘艺 赵义武 倪小龙 娄岩 姜会林 刘智

刘艺, 赵义武, 倪小龙, 娄岩, 姜会林, 刘智. 双向大气信道激光传输的信道互易性研究[J]. 中国光学(中英文), 2020, 13(1): 140-147. doi: 10.3788/CO.20201301.0140
引用本文: 刘艺, 赵义武, 倪小龙, 娄岩, 姜会林, 刘智. 双向大气信道激光传输的信道互易性研究[J]. 中国光学(中英文), 2020, 13(1): 140-147. doi: 10.3788/CO.20201301.0140
LIU Yi, ZHAO Yi-wu, NI Xiao-long, Lou Yan, JIANG Hui-lin, LIU Zhi. Channel reciprocity of bidirectional atmospheric laser transmission channels[J]. Chinese Optics, 2020, 13(1): 140-147. doi: 10.3788/CO.20201301.0140
Citation: LIU Yi, ZHAO Yi-wu, NI Xiao-long, Lou Yan, JIANG Hui-lin, LIU Zhi. Channel reciprocity of bidirectional atmospheric laser transmission channels[J]. Chinese Optics, 2020, 13(1): 140-147. doi: 10.3788/CO.20201301.0140

双向大气信道激光传输的信道互易性研究

doi: 10.3788/CO.20201301.0140
基金项目: 

国家自然科学基金 61475025

详细信息
    作者简介:

    刘艺(1992-), 女, 河北保定人, 博士研究生, 主要从事大气光学与空间激光通信传输方面的研究。E-mail:liuyi920611@163.com

    姜会林(1945—),男,辽宁辽中人,博士,教授、博士生导师,中国工程院院士,应用光学专家。E-mial:hljiang@cust.edu.cn

    刘智(1971-), 男, 吉林长春人, 博士, 教授, 1993年、2001年于长春光学精密机械学院分别获得学士、硕士学位, 2004年于中国科学院长春光学精密机械与物理研究所获得博士学位, 主要研究方向为空间激光通信技术和激光在复杂信道中的传输特性。E-mail:liuzhiqi@cust.edu.cn

  • 中图分类号: TN929.1

Channel reciprocity of bidirectional atmospheric laser transmission channels

Funds: 

National Natural Science Foundation of China 61475025

More Information
  • 摘要: 在大气信道激光传输中,大气湍流对系统性能会产生较大影响,主要体现为降低传输速率和增加误码率。在具有信道互易性的双向激光传输链路中,两终端光斑信号强度的变化相关,可以在终端提取信道状态信息,以对信道影响进行补偿,从而提高传输速率。本文首先在弱湍流条件下,根据Rytov近似理论推导了平面波双向传输链路接收到的光斑信号的相关系数与传输路径的关系,并给出解析式。结果表明,两终端接收的光斑信号的光通量具有相关性,且相关系数与传输路径有关。进一步搭建了双向收发共轴激光传输系统,并进行了外场试验,试验结果不仅验证了双向大气信道激光传输链路具有互易性,且两接收端光斑信号光强的实时变化趋势相同。本文结论对实现大气信道高速率、低误码率激光传输具有重要意义。

     

  • 图 1  双向大气信道激光传输链路示意图

    Figure 1.  Schematic diagram of bidirectional atmospheric channel laser transmission link

    图 2  试验链路示意图

    Figure 2.  Experimental link diagram

    图 3  双向收发共轴大气激光传输系统

    Figure 3.  Coaxial atmospheric laser transmission system with bidirectional transceiver

    图 4  弱湍流情况下信道相关系数μFI与传输路径ξ的关系

    Figure 4.  Relationship between channel correlation coefficient μFI and transmission path ξ under weak turbulence conditions

    图 5  双向自由空间激光传输链路两接收终端的光斑测量数据

    Figure 5.  Measurement data of two receivers in bidirectional free space laser transmission link

    图 6  30组数据样本的相关系数及归一化均方误差变化趋势

    Figure 6.  The correlation coefficient and normalized mean square error of 30 groups of data samples

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出版历程
  • 收稿日期:  2019-06-27
  • 修回日期:  2019-08-20
  • 刊出日期:  2020-02-01

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