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Proceedings Paper

Piston phase determination and its effect on multi-aperture image resolution recovery
Author(s): Jeffrey Kraczek; Nicholas J Miller; Paul McManamon; Joseph W. Haus; Joseph Marron
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Paper Abstract

Multi-aperture coherent LADAR techniques can be applied to generate high resolution images. When setting up a system with multiple sub-apertures, misalignment of the sub-apertures causes the beams entering the sub-apertures to have mismatched optical path lengths, which will degrade the image resolution. Post-processing using image sharpening techniques to correct for piston phase, as well as other aberration corrections, require computing power and time. We study whether the processing time can be shortened by providing measured piston phase information to the image sharpening algorithms. Simulations are used to demonstrate the usefulness of piston phase measurements. Simulations are presented showing the benefits of piston phase measurements for two or more sub-apertures. The speed of convergence for the sharpening algorithm both with and without the piston phase measurements are compared for multiple sub-aperture imaging.

Paper Details

Date Published: 8 June 2011
PDF: 10 pages
Proc. SPIE 8037, Laser Radar Technology and Applications XVI, 80370T (8 June 2011); doi: 10.1117/12.883420
Show Author Affiliations
Jeffrey Kraczek, Univ. of Dayton (United States)
Nicholas J Miller, Univ. of Dayton (United States)
Paul McManamon, Univ. of Dayton (United States)
Joseph W. Haus, Univ. of Dayton (United States)
Joseph Marron, Lockheed Martin Coherent Technologies (United States)

Published in SPIE Proceedings Vol. 8037:
Laser Radar Technology and Applications XVI
Monte D. Turner; Gary W. Kamerman, Editor(s)

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