美国火星激光通信系统分析

Analysis for Mars Laser Communications System in USA

空间光通信因其体积小、质量轻、数据率高,已经得到世界各国的普遍重视,尤其是进地卫星光通信系统的在轨实验的成功,使人们建立起用激光进行深空通信的信心,而我国的深空光通信技术起步较晚,因此在深空光通信系统的设计,元器件的选用方面有必要参考国外的深空光通信系统,因此本文对美国最新研制的火星激光通信演示系统(MLCD)进行全面分析,重点分析了该系统跟瞄(PAT)子系统,通信子系统,地面接收端的工作原理和工作方式,对系统中采用的新器件、新技术进行了详细的分析,在此基础上,对该系统的可靠性和可行性进行了分析,给出了未来深空激光通信技术研究的发展方向,为我国将来开展深空光通信的研究提供参考．

Free Space optical communication havs many advantages, such as the small volume, the little mass, and the high data volume. Many countries nowadays focus on the development of free space optical communication techniques. Inter-satellite optical communication experimental success has built the confidence to deep optical communication techniques. The deep space optical communication technology started to develop later in China. So, refering to the system oversea is requested, such as the design of system, the selection of components and the parameters of system. This paper analyzed the MLCD are analyzed of USA in general, focused on the analysis of operational concept and principle for PAT subsystem, communication subsystem and ground terminal. The new components and new techniques used in MLCD are analyzed in details. Based on these analyses, the feasibility and reliability are also discussed.