摘要
本文分析了大气扰动的空时特征与自适应光学系统各参数的关系，首先给出了大气湍流和风速的高度分布模型，并据此用经典理论计算了相干长度、相干时间和等晕角，其次对自适应光学系统的各项内部误差作了讨论，给出了诸误差的典型值，最后考虑了自适应光学系统的ｓｔｒｅｈｌ比。
The relation between spatial-temporal characteristic of atmospheric per-turbation and several parameters of adaptive optics system is analysed in this paper.Some altitude-distribution models of atmospheric turbulence intensity and wind velocity are presented. According to these medels the atmospheric coherence length,the coher-ence time and the isoplanatic angle are calculated. The internal errors of an adaptive op-tics system are discussed. The typical value of each error is indicated. The Strehl ratio of the system is considered in last.
出处
《激光技术》
CAS
CSCD
1994年第2期99-105,共7页
Laser Technology
关键词
自适应光学
湍流
相位畸变
校正
adaptive optics atmospheric coherence length coherence time iso-plantic angle turbulence and thermal blooming correction
