双向大气信道金宝搏188软件怎么用
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

doi:10.3788/CO.20201301.0140

双向大气信道金宝搏188软件怎么用传输的信道互易性研究

doi: 10.3788/CO.20201301.0140

cstr: 32171.14.CO.20201301.0140

刘艺^{1, 2,},
赵义武¹,
倪小龙¹,
娄岩¹,
姜会林^1,,
刘智^1, ,

1.
长春理工大学空间光电技术国家地方联合工程研究中心, 长春 130022
2.
长春理工大学光电工程学院, 长春 130022

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金宝搏188软件怎么用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金宝搏188软件怎么用通信技术和金宝搏188软件怎么用在复杂信道中的传输特性。E-mail:liuzhiqi@cust.edu.cn

中图分类号: TN929.1
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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

Channel reciprocity of bidirectional atmospheric laser transmission channels

LIU Yi^{1, 2
,},
ZHAO Yi-wu¹,
NI Xiao-long¹,
Lou Yan¹,
JIANG Hui-lin^1
,,
LIU Zhi^{1
, ,}

1.
NUERC of Space Optoelectronics Technology, Changchun University of Science and Technology, Changchun 130022, China
2.
College of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China

Funds:

National Natural Science Foundation of China 61475025

More Information

Corresponding author: LIU Zhi, E-mail:liuzhiqi@cust.edu.cn

摘要

摘要: 在大气信道金宝搏188软件怎么用传输中，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金宝搏188软件怎么用传输链路中，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金宝搏188软件怎么用传输系统，并进行了外场试验，试验结果不仅验证了双向大气信道金宝搏188软件怎么用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、低误码率金宝搏188软件怎么用传输具有重要意义。
- 信道互易性 /
- 大气湍流 /
- 光通量起伏 /
- 相关系数
Abstract: In atmospheric channel laser transmissions, atmospheric turbulence has a large influence on system performance, reducing its transmission rate and increasing its bit error rate. In a bidirectional free-space laser transmission link with channel reciprocity, as the change in optical signal intensity at the two terminals is correlated, the Channel State Information (CSI) can be obtained at the transmitter and used to compensate the channel influence, thus improves the transmission rate. In this paper, under weakly fluctuating conditions, according to Rytov approximation, the relationship between the correlation coefficient of the spot signal received by plane wave bidirectional transmission link and the transmission path is deduced, and its analytical expression is derived. The results show that the intensity of the optical signal at the receiving end of the bidirectional free-space laser transmission link is related to the transmission end and that the correlation coefficient is related to the location of the transmission path. A bidirectional coaxial laser transmission system is further established and an external field test is performed. The real-time change trend of the intensity of the speckle signal at both receivers is the same. Therefore, the atmospheric channel of the bidirectional free-space laser transmission link is reciprocal. The conclusion of this paper is of great significance for realizing high-rate and low bit error rate transmission in atmospheric channels.
- channel reciprocity /
- atmospheric turbulence /
- light-flux fluctuation /
- correlation coefficient

HTML全文

图 1 双向大气信道金宝搏188软件怎么用传输链路示意图

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

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图 2 试验链路示意图

Figure 2. Experimental link diagram

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图 3 双向收发共轴大气金宝搏188软件怎么用传输系统

Figure 3. Coaxial atmospheric laser transmission system with bidirectional transceiver

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图 4 弱湍流情况下信道相关系数μ_FI与传输路径ξ的关系

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

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图 5 双向自由空间金宝搏188软件怎么用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

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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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map

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