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Technique for simulating anisoplanatic image formation over long horizontal paths.
- Source :
- Optical Engineering; Oct2012, Vol. 51 Issue 10, p1-8, 8p
- Publication Year :
- 2012
-
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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00913286
- Volume :
- 51
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Optical Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 98628580
- Full Text :
- https://doi.org/10.1117/1.OE.51.10.101704