Focal plane wavefront sensing is an appealing technique to cophase multiple aperture telescopes. Phase diversity (PD), operable with any aperture configuration or source extension, generally suffers from high computing load. We introduce, characterize, and experimentally validate the linearized analytical phase diversity (LAPD) algorithm, based on a fast linearized PD algorithm with a capture range comparable to classic PD. We demonstrate that a typical performance of λ / 75 RMS wavefront error can be reached.

中文翻译：

---

具有线性化分析相分集的多孔径望远镜同相

焦平面波前感测是将多孔径望远镜同相的一种吸引人的技术。可用于任何孔径配置或源扩展的相位分集（PD）通常会承受较高的计算负荷。我们介绍，表征和实验验证线性化分析相位分集（LAPD）算法，该算法基于具有与传统PD相当的捕获范围的快速线性化PD算法。我们证明可以达到λ/ 75 RMS波前误差的典型性能。