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Proceedings Paper

Fast gradient-based algorithm on extended landscapes for wave-front reconstruction of Earth observation satellite
Author(s): C. Thiebaut; L. Perraud; J. M. Delvit; C. Latry
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Paper Abstract

We present an on-board satellite implementation of a gradient-based (optical flows) algorithm for the shifts estimation between images of a Shack-Hartmann wave-front sensor on extended landscapes. The proposed algorithm has low complexity in comparison with classical correlation methods which is a big advantage for being used on-board a satellite at high instrument data rate and in real-time. The electronic board used for this implementation is designed for space applications and is composed of radiation-hardened software and hardware. Processing times of both shift estimations and pre-processing steps are compatible of on-board real-time computation.

Paper Details

Date Published: 27 July 2016
PDF: 8 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 99096V (27 July 2016); doi: 10.1117/12.2233355
Show Author Affiliations
C. Thiebaut, Ctr. National d'Études Spatiales (France)
L. Perraud, Ctr. National d'Études Spatiales (France)
J. M. Delvit, Ctr. National d'Études Spatiales (France)
C. Latry, Ctr. National d'Études Spatiales (France)

Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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