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Proceedings Paper

Real-time estimation of exoplanetary systems astrometry and spectroscopy from nulling interferometry data
Author(s): Adrian R. Belu; Céline Theys-Ferrari; Henri Lantéri
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Paper Abstract

Several nulling signal processing techniques have been recently developed: CLEAN (Draper et al 2006) or Bayesian (Théibaut and Mugnier 2006, Marsh et al 2006). The days-long signal acquisition time required for exoplanet detection and characterization opens the possibility for "on the go" processing of the signal as it is being acquired. This permits dynamic observation strategy alteration, thus improved mission performance through optimal time assignment to targets. We have developed an implementation of the algorithm by Théibaut and Mugnier that is optimized for synchronous execution with the arrival of observation data. This will enable to investigate the behavior of the detection for planet layouts that may prove challenging, as well as to investigate the performance of a dynamic tuning of the regularization parameters. It is an additional step towards the end-to-end simulations required for validation of the overall performance of these observatories.

Paper Details

Date Published: 28 July 2008
PDF: 9 pages
Proc. SPIE 7013, Optical and Infrared Interferometry, 70134P (28 July 2008); doi: 10.1117/12.789676
Show Author Affiliations
Adrian R. Belu, Univ. de Nice Sophia-Antipolis, CNRS, OCA (France)
Céline Theys-Ferrari, Univ. de Nice Sophia-Antipolis, CNRS, OCA (France)
Henri Lantéri, Univ. de Nice Sophia-Antipolis, CNRS, OCA (France)

Published in SPIE Proceedings Vol. 7013:
Optical and Infrared Interferometry
Markus Schöller; William C. Danchi; Françoise Delplancke, Editor(s)

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