Speckle imaging over horizontal paths

Carmen J. Carrano

doi:10.1117/12.453519

6 November 2002 Speckle imaging over horizontal paths

Carmen J. Carrano

Author Affiliations +

Proceedings Volume 4825, High-Resolution Wavefront Control: Methods, Devices, and Applications IV; (2002) https://doi.org/10.1117/12.453519
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Atmospheric aberrations reduce the resolution and contrast in surveillance images recorded over horizontal or slant paths. This paper describes our recent horizontal and slant-path imaging experiments of extended scenes as well as the results obtained using speckle imaging. The experiments were performed with an 8-inch diameter telescope placed on either a rooftop or hillside and cover ranges of interest from 0.5 km up to 10 km. The scenery includes resolution targets, people, vehicles, and other structures. The improvement in image quality using speckle imaging is dramatic in many cases, and depends significantly upon the atmospheric conditions. We quantify resolution improvement through modulation transfer function measurement comparisons.

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Carmen J. Carrano "Speckle imaging over horizontal paths", Proc. SPIE 4825, High-Resolution Wavefront Control: Methods, Devices, and Applications IV, (6 November 2002); https://doi.org/10.1117/12.453519

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