自适应光学对大气扰动波前的补偿效果研究 I.理论推导

Compensation Effect of an Adaptive Optics System for Atmosphere Induced Wavefront Perturbation I. Theoretical Analysis

在采用冻结湍流假设和几何光学近似的条件下，得到了经自适应光学系统校正后的剩余波前相位扰动的结构函数。进而根据剩余相位结构函数与系统Ｓｔｒｅｈｌ比的关系，求出了自适应光学系统的补偿效果受系统的时空传递函数、大气湍流、光波传播路径上的横向风。

The structure function of residual wavefront phase perturbation compensated by an adaptive optics system has been derived by means of frozen turbulence hypothesis and geometric optics approach. According to the relationship between Strehl ratio of the system and the residual phase structure function, the analytical expression about the influence of spatial temporal transfer function, atmospheric turbulence, transverse wind speed along the light propagation path, angular velocity of the observed object and time delay of the system on the compensation effect of the system has been obtained.