Mehta N C, Allen C W
Appl Opt. 1993 May 20;32(15):2664-73. doi: 10.1364/AO.32.002664.
The remote alignment of segmented mirror active optics with far-field optimization is reported. Farfield optimization eliminates the need for a wave-front sensor or gap sensors since it does not require any near-field measurements, but uses simple measures of the point-spread function as figures of merit. The simplex function minimization algorithm is used to configure iteratively the segmented mirror toalignment. We present results of computer simulations to demonstrate the application of far-field optimization to the segmented mirror alignment in the presence of atmospheric turbulence. The effects of static as well as dynamic Kolmogorov turbulence (turbulence phase screen drifting across the telescope aperture) are studied. We find that the segmented mirror alignment is fairly insensitive to the speed of drifting turbulence and aligns a segmented mirror active optical system with adequate correction bandwidth in a few seconds.
报道了采用远场优化的分段镜主动光学元件的远程对准。远场优化无需波前传感器或间隙传感器，因为它不需要任何近场测量，而是使用点扩展函数的简单测量作为品质因数。单纯形函数最小化算法用于迭代配置分段镜以实现对准。我们给出了计算机模拟结果，以证明在存在大气湍流的情况下远场优化在分段镜对准中的应用。研究了静态和动态科尔莫戈罗夫湍流（湍流相位屏在望远镜孔径上漂移）的影响。我们发现，分段镜对准对湍流漂移速度相当不敏感，并且能在几秒钟内将分段镜主动光学系统对准，并具有足够的校正带宽。
