飞行器中继无线光通信研究进展

飞行器中继可以快速构建端到端的通信网络，增强通信系统的覆盖范围和传输能力，强化信号强度和提高数据传输速度，提高通信系统的可靠性。总结了无人机中继技术以及无人机中继在无线光通信中的国内外发展现状，并对无人机中继在无线光通信中关键技术进行了深入研究。对信道特性及其对通信的影响和抑制技术进行了分析，比较了不同调制解调方法的优缺点和通信过程中的光束捕获，跟踪和对准的具体方法，详细介绍了光束的快速对准。最后展望了无人机中继在无线光通信中的发展方向。

Research progress of aircraft relay wireless optical communication

Aircraft relay can quickly build an end-to-end communication network, enhance the coverage and transmission capacity of the communication system, strengthen the signal receival and improve the data transmission speed, and improve the reliability of the communication system. This paper summarizes the development status of UAV relay technology and UAV relay in wireless optical communication at home and abroad, and conducts in-depth research on the key technologies of UAV relay in wireless optical communication. The channel characteristics and their influence on communication and suppression techniques are analyzed, the advantages and disadvantages of different modulation and demodulation methods and the specific methods of beam capture, tracking and alignment in the communication process are compared, and the fast alignment of the beam is introduced in detail. Finally, the development direction of UAV relay in wireless optical communication is prospected.