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Identification and calibration of the interaction matrix parameters for AO and MCAO systems

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Date

2012

Authors

Neichel, Benoit
Parisot, Amelie
Petit, Cyril
Fusco, Theirry
Rigaut, Francois

Journal Title

Journal ISSN

Volume Title

Publisher

SPIE - The International Society for Optical Engineering

Abstract

New tomographic Adaptive Optics (AO) concepts require a good knowledge of the system geometry and characteristics. These parameters are used to feed the tomographic reconstructors. In this paper we present a method to precisely identify the parameters required to construct an accurate synthetic set of models such as influence functions, mis-registrations, directions of analysis or altitude of the DMs. The method is based on a multi-parameter fit of the interaction matrix. This identification method finds also its application in high contrast AO systems, such as SPHERE : in that case it is used as a diagnostic tool in order to precisely realign the system. The method has been tested and successfully implemented on HOMER, SPHERE and GeMS. Experimental results for these three systems are presented.

Description

Keywords

Keywords: Diagnostic tools; High contrast; Identification method; Influence functions; Interaction matrices; Multi-parameter fit; Reconstructors; System geometry; Three systems; Tomographic; Calibration; Tomography; Identification (control systems) Calibration; Interaction matrix

Citation

URI

http://hdl.handle.net/1885/82871

Collections

ANU Research Publications

Source

Proceedings of SPIE - The International Society for Optical Engineering

Type

Conference paper

Book Title

Entity type

Access Statement

Open Access

License Rights

DOI

10.1117/12.925277

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