空间激光通信系统中大气湍流的自适应补偿方法

The Adaptive Optics Technique for Atmospheric Turbulence in Laser Communication System

阐述了如何将自适应光学技术应用于空间激光通信系统工程中,以补偿大气湍流效应对激光束传输的影响。自适应光学的核心内容是实时校正光束波前畸变,以提高光学系统的成像质量,在光波质量方面,进一步的目标是要提高到接近衍射极限的水平,主要由波前探测、波前控制和波前校正三部分组成。本文还具体分析了自适应光学系统中时间带宽与空间带宽的匹配问题。空间激光通信系统和自适应光学系统都是非常复杂的系统工程。若将自适应光学技术有效地应用于空间激光通信系统,必然会使空间激光通信技术的发展迈上新的台阶。

This paper states how adaptive optics technique can be used in space laser communication system to compensate atmospheric turbulence when laser beam transmission through it. The core content of adaptive optics is correct laser beam wavefront disturbance in real-time, with it to enhance optical system imaging quality and the next aim is reach the level of diffraction limitation. Adaptive optics system consists of wavefront detection, wavefront control and wavefront correction. The problem of bandwidth matching between time domain and space domain is analyzed detailed. In conclusion, space laser communication and adaptive optics system are all complicated system engineering. If adaptive optics technique can be applied in space laser communication system and is proved by practice, it must be a new milestone in the development of space laser communication.