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Proceedings Paper

Optical correlator for improving images distorted by atmospheric turbulence
Author(s): Alastair D. McAulay
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Paper Abstract

Heat induced turbulence in the air causes optical phase changes that degrade image quality by smearing and causing the image to waiver unevenly in the field of view. A wavefront estimator provides an estimate of the turbulence generated phase variations at the lens. A modified optical transfer function is computed to include the phase effects of turbulence by assuming that the turbulence can be approximated by a phase screen at the lens. A 4-f correlator is used to deconvolve the phase due to turbulence out of the image. A computer simulation generates phase screens for testing the system.

Paper Details

Date Published: 13 July 2000
PDF: 6 pages
Proc. SPIE 4046, Advances in Optical Information Processing IX, (13 July 2000); doi: 10.1117/12.391951
Show Author Affiliations
Alastair D. McAulay, Lehigh Univ. (United States)


Published in SPIE Proceedings Vol. 4046:
Advances in Optical Information Processing IX
Dennis R. Pape, Editor(s)

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