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Proceedings Paper

Simulations of atmospheric anisoplanatism effects on laser-sheared beam imaging
Author(s): Keith A. Bush; Calvin C. Barnard; David G. Voelz
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Paper Abstract

Sheared beam imaging (SBI) is a coherent active imaging technique that employs a pupil-plane phase difference measurement approach to overcome the perturbing effects of atmospheric turbulence. The technique has shown promise for applications such as imaging satellites from ground-based sites. However, atmospheric compensation is dependent on the effective atmospheric isoplanatic patch size; which mines that degradations can occur for larger objects. We present theory and simulation results that demonstrate this limitation and we suggest approaches to reduce the residual degradations caused by anisoplanatism. Our simulations use wave optics propagation through phase screens to model atmospheric turbulence effects.

Paper Details

Date Published: 14 October 1996
PDF: 12 pages
Proc. SPIE 2828, Image Propagation through the Atmosphere, (14 October 1996); doi: 10.1117/12.254184
Show Author Affiliations
Keith A. Bush, Logicon R&D Associates (United States)
Calvin C. Barnard, Logicon R&D Associates (United States)
David G. Voelz, Air Force Phillips Lab. (United States)

Published in SPIE Proceedings Vol. 2828:
Image Propagation through the Atmosphere
Christopher Dainty; Luc R. Bissonnette, Editor(s)

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