Filtering the interaction matrix in an adaptive optics system

Xianyu Zhang; Nicolas Gorceix; Philip R. Goode

doi:10.20353/K3T4CP1131567

Filtering the interaction matrix in an adaptive optics system

Xianyu Zhang, Nicolas Gorceix, Philip R. Goode

Research output: Contribution to conference › Paper › peer-review

1 Scopus citations

Abstract

We present a method to reduce the noise in the interaction matrix by calibration of the adaptive optics system. The method utilizes a matching between the actuators on the deformable mirror and the sub-apertures on the wavefront sensor to define a filter matrix. Then, the filter matrix is applied to the sparse interaction matrix to remove the elements that should be zero. This method is useful for high-order systems and/or noise calibration issues. The latter case is illustrated in the problem of on-sky calibration of an adaptive secondary system on a telescope, with a natural guide star, in which the noise in the interaction matrix is increased by the effects of the turbulent atmosphere.

Original language	English (US)
DOIs	https://doi.org/10.20353/K3T4CP1131567
State	Published - 2015
Event	4th Adaptive Optics for Extremely Large Telescopes, AO4ELT 2015 - Lake Arrowhead, United States Duration: Oct 26 2015 → Oct 30 2015

Conference

Conference	4th Adaptive Optics for Extremely Large Telescopes, AO4ELT 2015
Country/Territory	United States
City	Lake Arrowhead
Period	10/26/15 → 10/30/15

All Science Journal Classification (ASJC) codes

Control and Systems Engineering
Instrumentation
Electronic, Optical and Magnetic Materials
Space and Planetary Science
Astronomy and Astrophysics
Mechanical Engineering

Keywords

Adaptive optics
Atmosphere
Filter
Interaction matrix
New solar telescope

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10.20353/K3T4CP1131567

Cite this

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title = "Filtering the interaction matrix in an adaptive optics system",

abstract = "We present a method to reduce the noise in the interaction matrix by calibration of the adaptive optics system. The method utilizes a matching between the actuators on the deformable mirror and the sub-apertures on the wavefront sensor to define a filter matrix. Then, the filter matrix is applied to the sparse interaction matrix to remove the elements that should be zero. This method is useful for high-order systems and/or noise calibration issues. The latter case is illustrated in the problem of on-sky calibration of an adaptive secondary system on a telescope, with a natural guide star, in which the noise in the interaction matrix is increased by the effects of the turbulent atmosphere.",

keywords = "Adaptive optics, Atmosphere, Filter, Interaction matrix, New solar telescope",

author = "Xianyu Zhang and Nicolas Gorceix and Goode, {Philip R.}",

note = "Funding Information: We gratefully acknowledge the support of the Air Force Office of Scientific Research grant FA9550-12-1-0066, the National Science Foundation grant AGS-1250818 and the National Aeronautics and Space Administration grant NNX13AG14G. The lead author sincerely thanks Philip R. Goode (BBSO)for supporting the work, and Douglas Summers, Julian Christou and Christian Veillet (all LBTO) for supporting the conference payment.; 4th Adaptive Optics for Extremely Large Telescopes, AO4ELT 2015 ; Conference date: 26-10-2015 Through 30-10-2015",

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doi = "10.20353/K3T4CP1131567",

language = "English (US)",

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TY - CONF

T1 - Filtering the interaction matrix in an adaptive optics system

AU - Zhang, Xianyu

AU - Gorceix, Nicolas

AU - Goode, Philip R.

N1 - Funding Information: We gratefully acknowledge the support of the Air Force Office of Scientific Research grant FA9550-12-1-0066, the National Science Foundation grant AGS-1250818 and the National Aeronautics and Space Administration grant NNX13AG14G. The lead author sincerely thanks Philip R. Goode (BBSO)for supporting the work, and Douglas Summers, Julian Christou and Christian Veillet (all LBTO) for supporting the conference payment.

PY - 2015

Y1 - 2015

N2 - We present a method to reduce the noise in the interaction matrix by calibration of the adaptive optics system. The method utilizes a matching between the actuators on the deformable mirror and the sub-apertures on the wavefront sensor to define a filter matrix. Then, the filter matrix is applied to the sparse interaction matrix to remove the elements that should be zero. This method is useful for high-order systems and/or noise calibration issues. The latter case is illustrated in the problem of on-sky calibration of an adaptive secondary system on a telescope, with a natural guide star, in which the noise in the interaction matrix is increased by the effects of the turbulent atmosphere.

AB - We present a method to reduce the noise in the interaction matrix by calibration of the adaptive optics system. The method utilizes a matching between the actuators on the deformable mirror and the sub-apertures on the wavefront sensor to define a filter matrix. Then, the filter matrix is applied to the sparse interaction matrix to remove the elements that should be zero. This method is useful for high-order systems and/or noise calibration issues. The latter case is illustrated in the problem of on-sky calibration of an adaptive secondary system on a telescope, with a natural guide star, in which the noise in the interaction matrix is increased by the effects of the turbulent atmosphere.

KW - Adaptive optics

KW - Atmosphere

KW - Filter

KW - Interaction matrix

KW - New solar telescope

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Y2 - 26 October 2015 through 30 October 2015

ER -

Filtering the interaction matrix in an adaptive optics system

Abstract

Conference

All Science Journal Classification (ASJC) codes

Keywords

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