摘要
在对大气湍流相位扰动进行 Zernike多项式展开的基础上 ,通过对信标和目标光的Zernike系数相关因子的推导 ,得到了实际自适应光学系统 (系统存在时间滞后和有限的空间分辨率 )对相位扰动各阶像差的校正残差公式。同时结合实际 ,对瑞利导星以及钠导星自适应光学系统补偿大气湍流各阶像差的能力进行了计算和分析 。
The residual phase error after correction for turbulence-induced phase aberrations by a partially compensating adaptive optics system (with temporal lag and limited space resolution) is computed by using phase expansion on the Zernike polynomials. The computation can be used to derive the maximum order of aberration for correction to get the most fitness from the compensation. The partially compensating adaptive optics system with Rayleigh beacon or sodium beacon as referred is also computed in this paper. The results show that the system with sodium beacon requires higher space frequency than the system with Rayleigh beacon. And the off-axis anisoplanatism effect due to the angular separation between the object and the beacon or the system temporal lag is more serious for the system with sodium beacon. The correction for high order aberration is more suitable for the system with sodium beacon than for the system with Rayleigh beacon.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2001年第3期282-286,共5页
High Power Laser and Particle Beams
基金
国家 8 6 3激光技术领域资助课题!(86 3-4 10 -1)
关键词
自适应光学
大气湍流
瑞利导星
钠导星
Atmospheric turbulence
Error compensation
Rayleigh scattering
Sodium
Wavefronts
