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9 November 1993 Phase error in bispectral stellar speckle imaging
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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.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Julian Meng and George J. M. Aitken "Phase error in bispectral stellar speckle imaging", Proc. SPIE 2029, Digital Image Recovery and Synthesis II, (9 November 1993);


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