Abstract

Superresolution in an optical-imaging system, which is caused by the focusing properties of a distant turbulent distribution, is considered in this paper. Analytical expressions for the average image spectrum of an object illuminated by a monochromatic plane wave are found. Conditions under which the superresolution effect is observed, and the relationship among the Fresnel number of the aperture lens, the aperture diameter, and the coherence length of the turbulence are discussed.

© 1993 Optical Society of America

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