自适应光学在星地激光通信中的研究进展

Research Progress of Adaptive Optics in Satellite-to-Ground Laser Communication

星地激光通信技术能打破传统微波通信的频谱限制,应对星地链路越来越高的通信需求。而自适应光学系统能有效地抑制大气信道中湍流的影响,提高星地激光通信链路的稳定性和可靠性,已经成为国内外星地激光通信系统中重要的组成部分。本文详细介绍了国内外典型星地激光通信地面站的自适应光学系统以及其主要参数指标。并结合目前光通信自适应光学技术的研究成果,总结出自适应光学系统更强的波前探测能力、更高的校正能力、更稳定可靠的工作性能以及更加自动化的发展趋势。为星地激光通信中自适应光学系统的研制提供参考,以保障星地激光通信链路的高可用度。

Satellitetoground laser communication(SGL)can address the spectrum limitation of traditional microwave communication and satisfy the increasing communication demand of satellite ground links.The adaptive optics(AO)system is an integral part of SGL,and it can effectively suppress the impacts of atmospheric turbulence and improve link stability and reliability.This paper introduces typical optical groundstation AO systems at home and abroad and its primary parameters.Based on the research results of AO in laser communication,the development trend followed by the AO system,including its improved wavefront detection ability,enhanced correction capability,stabilized and reliable operating performance,and improved automatic operation,is summarized.This study provides a reference for AO system development in SGL to ensure better availability of SGL link.