&lt;title&gt;PAMELA: phase I testing and verification on a 0.5-m diameter telescope with a 36-segment adaptive primary mirror&lt;/title&gt;

Ames, Gregory H.; Howard, Richard T.; Lindner, Jeffrey L.; Montgomery, Edward; Patterson, Alan; Rakoczy, John; Zeiders, Glenn W.; Waites, H. B.

doi:10.1117/12.208202

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2006

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“…A different method, demonstrated in the Phased Array Mirror Extendible Large Aperture (PAMELA), sought to decentralize the global control strategy (Rather et al 1989;Ames et al 1995;Rakoczy et al 2000). In the PAMELA test bed (a 36 hexagonal segment, 0.5 m diameter primary mirror), a ShackHartmann wave-front sensor was employed to sense tip and tilt motions of each segment.…”

Section: Introductionmentioning

confidence: 99%

Genetic Algorithm Phase Retrieval for the Systematic Image‐Based Optical Alignment Test Bed

Taylor

King

Steincamp

et al. 2006

PUBL ASTRON SOC PAC

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ABSTRACT.A real-valued genetic algorithm with random rank-based selection is shown to successfully estimate the multiple phases of a segmented optical system modeled on the seven-mirror Systematic Image-Based Optical Alignment test bed located at NASA's Marshall Space Flight Center. Comparisons are made between this and more traditional phase-retrieval methods. No significant increase in computational speed is observed using the genetic algorithm technique.

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Section: Introductionmentioning

confidence: 99%