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Proceedings Paper

Adaptive optical transfer function modeling
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Paper Abstract

In a preceding paper the authors calculated the mean value of the Optical Transfer Function (OTF) for a high-resolution imaging instrument corrected by adaptive optics. The Come_On experiments carried out during 1990 show good correlation with the mathematical model. In the present paper the model described in the 1987 paper is revised to introduce modal control and take into account the effects of time lags and/or angular depointings on the corrected OTF. These lags represent the time needed to perform the computations between phase measurements and corrections, and the angular depointings define the angular field where the corrections are valuable. The model permits an evaluation of the OTF decay in respect to the Fried diameter. Numerical results are given using the modified model with the Come_On project specifications. These works have been sponsored by the French Defense Ministry through the Direction des Recherches, Etudes et Techniques (DRET).

Paper Details

Date Published: 1 July 1991
PDF: 12 pages
Proc. SPIE 1483, Signal and Image Processing Systems Performance Evaluation, Simulation, and Modeling, (1 July 1991); doi: 10.1117/12.45733
Show Author Affiliations
Jean-Paul Gaffard, Laserdot Groupe Aerospatiale (France)
Corinne Boyer, Laserdot Groupe Aerospatiale (France)

Published in SPIE Proceedings Vol. 1483:
Signal and Image Processing Systems Performance Evaluation, Simulation, and Modeling
Hatem N. Nasr; Michael E. Bazakos, Editor(s)

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