大气相干激光通信研究中的几个理论问题  

Theoretical challenges in research of atmospheric coherent laser communication

作　　者：黄健 邓科 HUANG Jian;DENG Ke(School of Astronautics and Aeronautics,University of Electronic Science and Technology of China,Chengdu 611731,China;Aircraft Swarm Intelligent Sensing and Cooperative Control Key Laboratory of Sichuan Province,Chengdu 611731,China)

机构地区：[1]电子科技大学航空航天学院,四川成都611731 [2]飞行器集群智能感知与协同控制四川省重点实验室,四川成都611731

出　　处：《量子电子学报》2020年第5期556-565,共10页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金,61405023;中国科学院自适应光学重点实验室基金,LAOF1501。

摘　　要：大气相干激光通信技术在工程上已经发展到进入实用化部署阶段,但是其理论发展仍不完善,对大气相干激光通信系统理论以及其中必须涉及的自适应光学技术和大气闪烁问题的研究进展进行了回顾和分析。针对大气湍流对光束振幅扰动以及自适应光学相位校正的随机过程进行精确分析是当前大气相干激光通信理论体系化的主要挑战,且研究方法必须全面采用概率分析的方法。目前,自适应光学相位校正的概率分析的基本框架已经形成,面向大气相干激光通信的闪烁概念必须扩展包含大气散斑和总功率起伏两种内涵,这是未来研究的重点和难点。The atmospheric coherent laser communication technology has developed to the stage of practical deployment in the engineering terminals,but its theory is far away from perfect.The theory of atmospheric coherent laser communication and its relating research on adaptive optics and atmospheric scintillation are reviewed and analyzed.The precise analyses for the random process of beam perturbation and adaptive optical phase correction in atmospheric turbulence are the main challenges in completing the theory of coherent laser communication,and the probability method should be adopted in related research.At present,the basic framework of probabilistic analysis of adaptive optical phase correction has been formed,and the concept of scintillation for atmospheric coherent laser communication must be extended to include the variations of speckle and intensity,which should be investigated more fundamentally in future.

关 键 词：光通信 自由空间激光通信 大气湍流 相干光通信 自适应光学 闪烁 大气散斑 概率 

分 类 号：TN929.12[电子电信—通信与信息系统]