Fast Phase Spectrum Estimation Using the Parallel Part-Bispectrum Algorithm

Details Fast Phase Spectrum Estimation Using the Parallel Part-Bispectrum Algorithm Fast Phase Spectrum Estimation Using the Parallel Part-Bispectrum Algorithm

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004pasp..116...65t&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 116, Issue 815, pp. 65-76.

Astronomy and Astrophysics

Astronomy

Techniques: High Angular Resolution, Techniques: Image Processing

Scientific paper

Adaptive optics image data acquired on large telescopes nearly always need postdetection processing. We have designed a new algorithm for fast phase estimation from the bispectrum. Our innovative ``part-bispectrum'' approach to phase estimation addresses the large, instantaneous memory required to form the bispectrum of data measured on large-format detectors. The part-bispectrum approach has been further extended to run on parallel machines, hence the name ``parallel part-bispectrum'' algorithm. We describe the concept, design, and optimization of the algorithm and provide execution times for a variety of scenarios.

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