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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 3, Iss. 7 — Jul. 1, 1986
  • pp: 1001–1009

Contribution to the space–time study of stellar speckle patterns

Claude Aime, Julien Borgnino, François Martin, Roumain Petrov, Gilbert Ricort, and Samir Kadiri  »View Author Affiliations


JOSA A, Vol. 3, Issue 7, pp. 1001-1009 (1986)
http://dx.doi.org/10.1364/JOSAA.3.001001


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Abstract

The temporal behavior of stellar speckle patterns is statistically analyzed. The time-only power spectrum is shown to be the sum of two exponentially decreasing functions defining two characteristic time constants. The corresponding correlation is the sum of two Lorentzian functions. This is consistent with the first-order expansion of the power spectrum deduced from the multiple-layer model for atmospheric turbulence. However, this model fails to account for the experimental data that show a strong correlation between the spatial structure of a speckle pattern and its temporal behavior. This leads to the introduction of a new empirical model, called the randomly jittered speckle pattern model, which gives a preponderant place to image motion. The speckle lifetime then appears to be substantially longer than the corresponding measured time constant. As a consequence, a preliminary compensation of the image motion appears to be particularly interesting in speckle interferometry or active optics experiments.

© 1986 Optical Society of America

History
Original Manuscript: May 28, 1985
Manuscript Accepted: August 23, 1985
Published: July 1, 1986

Citation
Claude Aime, Samir Kadiri, Julien Borgnino, François Martin, Roumain Petrov, and Gilbert Ricort, "Contribution to the space–time study of stellar speckle patterns," J. Opt. Soc. Am. A 3, 1001-1009 (1986)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-3-7-1001

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