标题： 光学波前的有效相干长度估计 显示英文标题

标题： Effective coherence length estimation of optical wavefronts

摘要： 在自适应光学中，空间相干长度的测量有助于确定Shack-Hartmann传感器（SHS）的最佳设计参数。 本文提出了两种估计光学波前空间相干长度的方法。 第一种方法基于统计波前中的霍夫峰值数量。 第二种方法基于应用于波前的简单数据挖掘技术。 模拟了具有不同特性的光学波前，并用于统计分析。 通过蒙特卡罗模拟展示了这两种方法的性能比较。 结果表明，这两种方法都可以成为估算光学波面前有效相干长度的有效工具。 显示英文摘要

摘要： In adaptive optics, the measurement of spatial coherence length helps in deciding the optimum design parameters of a Shack Hartmann Sensor (SHS). Two methods of estimating the spatial coherence length of optical wavefronts are presented. The first method is based on counting the number of Hough peaks in the wavefront. The second method is based on a simple data mining technique applied on the wavefronts. Optical wavefronts with different properties are simulated and used for statistical analysis. A comparison of the performance of the two methods is presented using Monte Carlo simulations. It is shown that both these methods can become efficient tools in estimating the effective coherence length of optical wavefronts.