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Proceedings Paper

Phase error in bispectral stellar speckle imaging
Author(s): Julian Meng; George J. M. Aitken
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Paper Abstract

The recovery of a stellar object's Fourier phase from the bispectrum of the atmospherically- degraded images has been investigated with respect to object complexity, a wide range of light levels, severity of the atmospheric effects and the number of bispectral subplanes used. The incremental improvement in the quality of the recovered phase as the number of near-axis subplanes increases is greatest for complex sources and when photon-noise dominates. At high signal-to-noise ratios it was found that the extended Knox-Thompson transfer function has a higher phase variance than the bispectral transfer function. Analysis has confirmed this difference in behavior.

Paper Details

Date Published: 9 November 1993
PDF: 11 pages
Proc. SPIE 2029, Digital Image Recovery and Synthesis II, (9 November 1993); doi: 10.1117/12.162004
Show Author Affiliations
Julian Meng, Queen's Univ. (Canada)
George J. M. Aitken, Queen's Univ. (Canada)

Published in SPIE Proceedings Vol. 2029:
Digital Image Recovery and Synthesis II
Paul S. Idell, Editor(s)

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