光学学报, 2000, 20 (1): 68, 网络出版: 2006-08-09
自适应光学系统波前校正残余误差的功率谱分析方法
Analysis of Closed-Loop Wavefront Residual Error of Adaptive Optical System Using the Method of Power Spectrum
自适应光学 大气湍流 功率谱 噪声 波前残余误差 复原相位 闭环带宽 adaptive optics atmospheric turbulence power spectrum noise wavefront residual error reconstructed phase closed loop bandwidth
摘要
采用比较自适应光学系统闭环校正前后时间功率谱的方法,对自适应光学系统的波前校正残余误差进行了分析。在注意系统噪声时,实测的闭环波前复原相位误差与实际波前校正残余误差是有区别的,分析了两者功率谱的差别之后,提出了一种估计实际波前校正残余误差的方法。应用这种方法对1.2米望远镜高分辨力自适应光学系统所采集的复原相位数据方差和波前校正残余误差进行了对比
Abstract
Closed loop wavefront residual error of adaptive optical system consists of the uncompensated turbulence error and closed loop noise. The measured closed loop wavefront residual error is analyzed by using open loop and closed power spectrum. When the system noise is considered, the measured reconstructed phase error and the closed loop wavefront residual error are different. Based on the difference of their power spectrum, a method of evaluating the closed loop wavefront residual error is proposed. The comparison of the reconstructed phase error, which is calibrated in high resolution adaptive optical system of 1.2 m telescope, and the closed loop wavefront residual error is given.
饶长辉, 沈锋, 姜文汉. 自适应光学系统波前校正残余误差的功率谱分析方法[J]. 光学学报, 2000, 20(1): 68. 饶长辉, 沈锋, 姜文汉. Analysis of Closed-Loop Wavefront Residual Error of Adaptive Optical System Using the Method of Power Spectrum[J]. Acta Optica Sinica, 2000, 20(1): 68.