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基于退偏振比探测的大气激光通信

Atmospheric Laser Communication Based on Depolarization Ratio Detection

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摘要

针对大气激光通信中多径散射效应产生的通信链路码间串扰问题,提出了一种基于退偏振比探测的大气激光通信传输方案。利用光子追迹和Stokes矢量变换进行了Monte Carlo仿真;通过设置不同的云层物理厚度和消光系数,得到接收光退偏振比与云层光学厚度的一一对应关系;基于Stotts公式,得到接收光退偏振比与平均脉冲时间展宽的对应关系。提出了在多径效应影响下的最佳通信传输速率方案,该方案在激光通信系统接收端直接进行退偏振比探测,可有效评估大气信道环境的多径强度,进而在保证激光通信传输质量的同时实现最大的通信传输速率。该研究在星地激光通信以及自适应激光通信的通信链路优化领域具有理论指导意义和应用价值。

Abstract

A transmission scheme of atmospheric laser communication based on depolarization ratio detection is proposed to solve the problem that the intersymbol interference in the communication link is caused by the multipath scattering effect in atmospheric laser communication. A Monte Carlo simulation is carried out by using the technologies of photon tracing and Stokes vector transform. The correspondence relationship between the depolarization ratio of received light and the optical depth of clouds is obtained through setting different physical depths and extinction coefficients of clouds. The relationship between the depolarization ratio of received light and the average pulse broadening time is obtained based on the Stotts formula. An optimal communication rate scheme under the multipath effect is proposed. This scheme can detect the depolarization ratio at the receiver of the laser communication system directly, evaluate the multipath intensity in atmospheric channel environment effectively, and achieve the largest communication transmission while ensuring the quality of laser communication. The research has theoretical guiding significance and application value in communication link optimization of satellite-ground laser communication and adaptive laser communication.

Newport宣传-MKS新实验室计划
补充资料

中图分类号:TN012

DOI:10.3788/aos201636.1106008

所属栏目:光纤光学与光通信

基金项目:国家自然科学基金(61571446)、安徽省自然科学基金(1308085MF83)

收稿日期:2016-05-17

修改稿日期:2016-07-15

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作者单位    点击查看

张岱:中国人民解放军电子工程学院脉冲功率激光技术国家重点实验室, 安徽 合肥 230037
郝士琦:中国人民解放军电子工程学院脉冲功率激光技术国家重点实验室, 安徽 合肥 230037
赵青松:中国人民解放军电子工程学院脉冲功率激光技术国家重点实验室, 安徽 合肥 230037
孙韩:中国人民解放军电子工程学院脉冲功率激光技术国家重点实验室, 安徽 合肥 230037

联系人作者:张岱(daishen1208@126.com)

备注:张岱(1993—),男,博士研究生,主要从事大气激光通信方面的研究。

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引用该论文

Zhang Dai,Hao Shiqi,Zhao Qingsong,Sun Han. Atmospheric Laser Communication Based on Depolarization Ratio Detection[J]. Acta Optica Sinica, 2016, 36(11): 1106008

张岱,郝士琦,赵青松,孙韩. 基于退偏振比探测的大气激光通信[J]. 光学学报, 2016, 36(11): 1106008

被引情况

【1】王 磊,郝士琦,张 岱,王 勇. 离散速率条件下的大气激光通信自适应调制编码系统性能. 光学学报, 2017, 37(7): 706002--1

【2】袁凯华,邓剑勋,刘超,黄佐华. 一种快速同时测量波片相位延迟量和快轴方位角的方法. 激光与光电子学进展, 2018, 55(2): 21202--1

【3】王苗,杭超. 脉冲内四波混频与四分量超慢光孤子. 光学学报, 2018, 38(10): 1019001--1

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