新型光通信提前量监测系统的设计

The novel design of point-ahead system for communication in space

本文给出了新型应用于光通信提前量监测系统的设计。无线光通信具有速率高、保密性高、抗干扰性强等优点,使得其应用范围更为广泛。在卫星光通信中,两颗卫星同时在不停运动,并且距离非常远,激光在两者之间进行传输需要一定时间,这样就必须进行超前对准,即提前量监测。本文分析了不同通信链路的提前量情况,最后以低轨卫星通信链路为例重点给出了超前瞄准系统的探测器选择以及光学系统设计结果。

A new design of point-ahead detector for optical communication is proposed in this paper.With high speed,security,strong anti-jamming,and so on advantages,the optical communication is applied extensively.During communication between satellites,two terminals are running continuously at the same time and the communication distance is very far.The transmitter of laser between of those needs some period,so the process of point-ahead must be performed,which is ahead detecting.The point-ahead for different communication link is analyzed in this paper,then the method of choosing detector and optical design of point-ahead are proposed in detail through an example of communication between low-earth-orbit satellites.