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- W2020593223 abstract "Wavefront sensing of the segmented optics usually includes two steps. The first step is to sense and correct eachsegment's position error (co-phasing error) and figure error (aberration), and the second step is to sense the residualwavefront error over the whole aperture. However, due to the limited correction capability and accuracy of thefigure sensing and co-phasing sensing in the first step, the original fine wavefront sensing (WFS) algorithm in thesecond step, the Modified Baseline algorithm, would be failed once the absolute figure difference at nearby edgesof nearby segments exceeds λ/2. Thus a Hybrid Phase-diverse Phase Retrieval (HPDPR) algorithm, which adds theLevenburg-Marquardt (LM) algorithm to eliminate each segment's residual position error for decreasing theabsolute figure difference, is proposed. Simulations have proven the validity of the HPDPR algorithm, and shownits robustness and high WFS accuracy." @default.
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- W2020593223 date "2007-09-26" @default.
- W2020593223 modified "2023-09-23" @default.
- W2020593223 title "Hybrid phase-diverse phase retrieval algorithm in wavefront sensing for segmented optics" @default.
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- W2020593223 doi "https://doi.org/10.1117/12.791169" @default.
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