AI 中文总结
针对高吞吐量光通信链路需求，提出基于联合最大似然方法的夏克-哈特曼波前传感器新斜率测量算法，该算法对传感器饱和鲁棒，拓宽强度范围，增加有效测量数量。
AI 中文摘要
高吞吐量光通信链路即使在强扰动条件和低仰角下也需要使用自适应光学（AO）来补偿大气湍流。考虑到闪烁带来的强度波动，我们基于联合最大似然方法提出了一种用于夏克-哈特曼波前传感器（SHWFS）的新斜率测量算法。我们表明该估计器对传感器饱和具有鲁棒性，与经典算法相比，可用于可靠斜率测量的强度范围拓宽了两个多数量级。因此，通过增加分配给波前传感器的强度，尽管存在传感器饱和，我们也增加了有效测量的数量。
英文摘要
High throughput optical communication links require the use of adaptive optics (AO) to compensate for atmospheric turbulence even in strong perturbation conditions and at low elevation. Considering the intensity fluctuations brought by scintillation, we present a new slope measurement algorithm for the Shack--Hartmann wavefront sensor (SHWFS), based on a joint maximum likelihood approach. We show that this estimator is robust to sensor saturation and widens by more than two orders of magnitude the intensity range exploitable for reliable slope measurements compared to classical algorithms. Consequently, by increasing the intensity assigned to the wavefront sensor, we also increase the number of valid measurements despite sensor saturation.
Journal refOptics Letters, 2025, 50 (9), pp.2950-2953
