Speckle imaging over horizontal paths

Details Speckle imaging over horizontal paths Speckle imaging over horizontal paths

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002spie.4825..109c&link_type=abstract

High-Resolution Wavefront Control: Methods, Devices, and Applications IV. Edited by Gonglewski, John D.; Vorontsov, Mikhail A.;

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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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