Large dynamic cophasing error correction based on improved stochastic parallel gradient descent algorithm

The correction of cophasing errors in segmented mirrors is essential for achieving diffraction-limited performance in large-aperture telescopes. In this paper, we propose an improved stochastic parallel gradient descent (SPGD) algorithm, referred to as cophasing SPGD (CSPGD), specifically designed f...

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Veröffentlicht in:	Optics and lasers in engineering Jg. 194; S. 109168
Hauptverfasser:	Peng, Dong, Dong, Bing, Tian, Guoliang, He, Jinping
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Elsevier Ltd 01.11.2025
Schlagworte:	Adaptive optics Cophasing error Segmented mirror Stochastic parallel gradient descent Telescope Wavefront sensorless Telescope Adaptive optics Wavefront sensorless Segmented mirror Cophasing error Stochastic parallel gradient descent
ISSN:	0143-8166
Online-Zugang:	Volltext
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