Stochastic optimization for adaptive real -time wavefront correction

We have investigated the performance of an adaptive optics system subjected to changing atmospheric conditions, under the guidance of the ALOPEX stochastic optimization. Atmospheric distortions are smoothed out by means of a deformable mirror, the shape of which can be altered in order to follow the...

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Detalles Bibliográficos
Autores: Zakynthinaki, M. S., Saridakis, Yannis. G.
Tipo de recurso: artículo
Fecha de publicación:2002
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/878
Acceso en línea:https://hdl.handle.net/2117/878
Access Level:acceso abierto
Palabra clave:Electromagnetic theory
Mathematical programming
Stochastic optimization
ALOPEX algorithm
Adaptive wavefront correction
Zernike polynomials
Deformable mirror
Masking
Òptica
Electromagnetisme
Programació (Matemàtica)
Classificació AMS::90 Operations research, mathematical programming::90C Mathematical programming
Classificació AMS::78 Optics, electromagnetic theory::78M Basic methods
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spelling Stochastic optimization for adaptive real -time wavefront correctionZakynthinaki, M. S.Saridakis, Yannis. G.Electromagnetic theoryMathematical programmingStochastic optimizationALOPEX algorithmAdaptive wavefront correctionZernike polynomialsDeformable mirrorMaskingÒpticaElectromagnetismeProgramació (Matemàtica)Classificació AMS::90 Operations research, mathematical programming::90C Mathematical programmingClassificació AMS::78 Optics, electromagnetic theory::78M Basic methodsWe have investigated the performance of an adaptive optics system subjected to changing atmospheric conditions, under the guidance of the ALOPEX stochastic optimization. Atmospheric distortions are smoothed out by means of a deformable mirror, the shape of which can be altered in order to follow the rapidly changing atmospheric phase fluctuations. In a simulation model, the total intensity of the light measured on a central area of the image (masking area) is used as the cost function for our stochastic optimization algorithm, while the surface of the deformable mirror is approximated by a Zernike polynomial expansion. Atmospheric turbulence is simulated by a number of Kolmogorov filters. The method's effectiveness, that is its ability to follow the motion of the turbulent wavefronts, is studied in detail and as it pertains to the size of the mirror's masking area, to the number of Zernike polynomials used and to the degree of the algorithm's stochasticity in relation to the mean rate of change of atmospheric distortions. Computer simulations and a series of numerical experiments are reported to show the successful implementation of the method.20022002-01-0120072007-05-04journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/878reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 2.5 Spainhttp://creativecommons.org/licenses/by-nc-nd/2.5/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/8782026-05-27T15:37:01Z
dc.title.none.fl_str_mv Stochastic optimization for adaptive real -time wavefront correction
title Stochastic optimization for adaptive real -time wavefront correction
spellingShingle Stochastic optimization for adaptive real -time wavefront correction
Zakynthinaki, M. S.
Electromagnetic theory
Mathematical programming
Stochastic optimization
ALOPEX algorithm
Adaptive wavefront correction
Zernike polynomials
Deformable mirror
Masking
Òptica
Electromagnetisme
Programació (Matemàtica)
Classificació AMS::90 Operations research, mathematical programming::90C Mathematical programming
Classificació AMS::78 Optics, electromagnetic theory::78M Basic methods
title_short Stochastic optimization for adaptive real -time wavefront correction
title_full Stochastic optimization for adaptive real -time wavefront correction
title_fullStr Stochastic optimization for adaptive real -time wavefront correction
title_full_unstemmed Stochastic optimization for adaptive real -time wavefront correction
title_sort Stochastic optimization for adaptive real -time wavefront correction
dc.creator.none.fl_str_mv Zakynthinaki, M. S.
Saridakis, Yannis. G.
author Zakynthinaki, M. S.
author_facet Zakynthinaki, M. S.
Saridakis, Yannis. G.
author_role author
author2 Saridakis, Yannis. G.
author2_role author
dc.subject.none.fl_str_mv Electromagnetic theory
Mathematical programming
Stochastic optimization
ALOPEX algorithm
Adaptive wavefront correction
Zernike polynomials
Deformable mirror
Masking
Òptica
Electromagnetisme
Programació (Matemàtica)
Classificació AMS::90 Operations research, mathematical programming::90C Mathematical programming
Classificació AMS::78 Optics, electromagnetic theory::78M Basic methods
topic Electromagnetic theory
Mathematical programming
Stochastic optimization
ALOPEX algorithm
Adaptive wavefront correction
Zernike polynomials
Deformable mirror
Masking
Òptica
Electromagnetisme
Programació (Matemàtica)
Classificació AMS::90 Operations research, mathematical programming::90C Mathematical programming
Classificació AMS::78 Optics, electromagnetic theory::78M Basic methods
description We have investigated the performance of an adaptive optics system subjected to changing atmospheric conditions, under the guidance of the ALOPEX stochastic optimization. Atmospheric distortions are smoothed out by means of a deformable mirror, the shape of which can be altered in order to follow the rapidly changing atmospheric phase fluctuations. In a simulation model, the total intensity of the light measured on a central area of the image (masking area) is used as the cost function for our stochastic optimization algorithm, while the surface of the deformable mirror is approximated by a Zernike polynomial expansion. Atmospheric turbulence is simulated by a number of Kolmogorov filters. The method's effectiveness, that is its ability to follow the motion of the turbulent wavefronts, is studied in detail and as it pertains to the size of the mirror's masking area, to the number of Zernike polynomials used and to the degree of the algorithm's stochasticity in relation to the mean rate of change of atmospheric distortions. Computer simulations and a series of numerical experiments are reported to show the successful implementation of the method.
publishDate 2002
dc.date.none.fl_str_mv 2002
2002-01-01
2007
2007-05-04
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/878
url https://hdl.handle.net/2117/878
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 2.5 Spain
http://creativecommons.org/licenses/by-nc-nd/2.5/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 2.5 Spain
http://creativecommons.org/licenses/by-nc-nd/2.5/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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