Technique for simulating anisoplanatic image formation over long horizontal paths

Jeremy P. Bos; Michael C. Roggemann

doi:10.1117/1.OE.51.10.101704

15 May 2012 Technique for simulating anisoplanatic image formation over long horizontal paths

Jeremy P. Bos, Michael C. Roggemann

Author Affiliations +

Optical Engineering, Vol. 51, Issue 10, 101704 (May 2012). https://doi.org/10.1117/1.OE.51.10.101704

Abstract

The presence of turbulence over horizontal imaging paths severely reduces the resolution available to imaging systems and introduces anisoplanatic distortions in the image frame. A variety of image processing techniques are being developed which can mitigate these effects, and sequences of high-fidelity images created via simulation are useful in their development. In this paper, we describe a simplification of the split-step wave propagation method that employs a series of uniformly spaced phase screens to accurately simulate turbulence effects on imaging over horizontal paths. Employing this method, a series of 1000 image frames were generated for each of three turbulence conditions. The mean squared error in intensity per pixel is also evaluated for each frame in comparison to a diffraction-limited reference. Examination of the per-frame intensity error statistics indicate these errors are log-normally distributed about a mean value that increases approximately linearly with turbulence strength.

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Jeremy P. Bos and Michael C. Roggemann "Technique for simulating anisoplanatic image formation over long horizontal paths," Optical Engineering 51(10), 101704 (15 May 2012). https://doi.org/10.1117/1.OE.51.10.101704

Published: 15 May 2012

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