低阶模式校正自适应光学系统的非等晕限制

分析了非科尔莫戈罗夫湍流情况下，自适应光学系统低阶模式校正时的非等晕误差、泽尼克系数角相关函数、残余相位结构函数以及长曝光光学传递函数，并定义了一个新变量－－模式校正因子，用来有效评价目标非等晕误差对低阶模式校正自适应光学系统补偿效果的影响。此外还给出了光波水平大气传输时模式校正因子以及低阶模式校正系统长曝光光学传递函数的数值计算结果。

Anisoplanatism Limitations for Low-Order Mode Correction Adaptive Optical System

For non-Kolmogorov turbulence, the anisoplanatiam error, the angular correlation function of Zernike polynomials, the residual phase structure function and the long-exposure OTF after low-order modes correction are analyzed. The modal correction coefficient is used to evaluate the influence of anisoplanatism error for compensation effectiveness of adaptive optical system used as low-order modes correction. The numerical computational results of t he modal correction coefficient and the long-exposure OTF for light beam horizo ntal atmospheric propagation are presented.