激光通信系统中的光强闪烁抑制研究与实现  

Research and Implementation of Light Intensity Scintillation Suppression in Laser Communication System

作　　者：王振宇 董科研[1,2] 安岩[2] 于笑楠 宋延嵩[2] WANG Zhenyu;DONG Keyan;AN Yan;YU Xiaonan;SONG Yansong(School of Opto-Electronic Engineering,Changchun University of Science and Technology,Changchun 130022;Institute of Space Optoelectronic Technology,Changchun University of Science and Technology,Changchun 130022)

机构地区：[1]长春理工大学光电工程学院,长春130022 [2]长春理工大学空间光电技术研究所,长春130022

出　　处：《长春理工大学学报（自然科学版）》2022年第2期19-27,共9页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：吉林省重大科技成果转化项目(20160301005GX)。

摘　　要：针对激光通信系统中影响通信质量的大气湍流光强闪烁效应的抑制问题,提出了一种控制闪烁方差的大气湍流抑制算法。基于闪烁方差的增益控制原理对抑制算法进行了理论分析,设计了一种带有闪烁方差控制的APD接收器,并在通信距离分别为500 m和900 m的外场进行了实验。结果表明,在通信距离500 m实验中,平均闪烁方差由0.032降低到0.0085,平均误码率由7.62×10^(-7)降低至1×10^(-12)。相应的,在通信距离900 m实验中,平均闪烁方差由0.050降低至0.014,平均误码率由1.69×10^(-6)降低至1×10^(-12)。以上方法能够有效抑制大气湍流所引起的光强闪烁,降低通信误码率,具有一定的研究意义和商业应用价值。Aiming at the suppression of the light intensity scintillation effect of atmospheric turbulence that affects communication quality in laser communication systems,an atmospheric turbulence suppression algorithm is proposed to control the variance of scintillation.Based on the gain control principle of flicker variance,the suppression algorithm is theoretically analyzed;and an APD receiver with flicker variance control is designed;and experiments are carried out in the field with a communication distance of 500 m and 900 m.The results show that in the 500 m communication distance experiment,the average flicker variance is reduced from 0.032 to 0.0085;and the average bit error rate is reduced from 7.62×10^(-7) to 1×10^(-12).Correspondingly,in the 900 m communication distance experiment,the average flicker variance was reduced from 0.050 to 0.014;and the average bit error rate was reduced from 1.69×10^(-6) to 1×10^(-12).The above methods can effectively suppress the light intensity flicker caused by atmospheric turbulence and reduce the communication error rate,which has certain research significance and commercial application value.

关 键 词：激光通信 大气湍流 APD探测器 闪烁方差控制算法 

分 类 号：TN929.1[电子电信—通信与信息系统]