空间日冕仪光学平台（SCoOB）：X.暗区维护
The Space Coronagraph Optical Bench (SCoOB): X. Dark zone maintenance
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中文总结 AI 辅助
该研究针对空间日冕仪光学平台（SCoOB），开展线性暗场控制（LDFC）与基于扩展卡尔曼滤波（EKF）的暗区维护（DZM）算法的模拟及LDFC的初步实验，以验证其暗区维护能力，支撑系外行星观测。
中文摘要 AI 辅助
空间日冕仪光学平台（SCoOB）是一款真空型高对比度成像测试台，旨在利用矢量涡旋日冕仪（VVC）掩模，在3至10λ/D的单侧暗孔范围内实现光学波段的星光抑制，获得优于10⁻⁸的对比度。近期部分研究致力于测试暗区维护（DZM）算法，这类算法用于在波前漂移存在时稳定对比度，为系外行星观测所需的长积分时间提供支持。本研究讨论了两种DZM算法——线性暗场控制（LDFC）和基于扩展卡尔曼滤波（EKF）的DZM的模拟结果，同时报告了该测试台采用LDFC的初步实验结果。
英文摘要
The Space Coronagraph Optical Bench (SCoOB) is a vacuum high contrast imaging testbed designed to demonstrate starlight suppression at optical wavelengths and obtain contrasts better than 10$^{-8}$ in a one-sided dark hole from 3 to 10 $λ/D$ using a vector vortex coronagraph (VVC) mask. Some of the recent efforts have been in testing dark zone maintenance (DZM) algorithms which are used to stabilize the contrast in the presence of wavefront drifts and allow for the long integration times required by exoplanet observations. In this work, we discuss the results from simulations with two DZM algorithms - linear dark field control (LDFC) and extended Kalman Filter-based (EKF) DZM. We also report preliminary results from the testbed with LDFC.
