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Proceedings Paper

Wavelet-based signal processing applied to deformable mirror PZT actuators for wavefront control
Author(s): Katharine J. Jones
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Paper Abstract

The objective of this paper is to address one of the more difficult problems in astronomical Adaptive Optics (AO): on future Extremely Large Telescopes (ELT), the computing power required for the requisite number of actuators will exceed the computing power presently available. The PZT actuators for Deformable Mirrors (MD) have three axes: tilt, tip and piston. It is envisioned that these three axes can be controlled by adaptive wavelet filter banks. Adaptive echo cancellation will be applied to achieve wavefront correction in a manner analogous to that used to cancel telephone echoes. This approach will provide a viable alternative to those presently available and reduce the number of computations.

Paper Details

Date Published: 18 April 2007
PDF: 12 pages
Proc. SPIE 6523, Modeling, Signal Processing, and Control for Smart Structures 2007, 65230X (18 April 2007); doi: 10.1117/12.713639
Show Author Affiliations
Katharine J. Jones, Rice Univ. (United States)

Published in SPIE Proceedings Vol. 6523:
Modeling, Signal Processing, and Control for Smart Structures 2007
Douglas K. Lindner, Editor(s)

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