Angular anisoplanatism in non-Kolmogorov turbulence over horizontal paths
Document Type
Article
Publication Date
2020
Department
Department of Electrical and Computer Engineering
Abstract
We use Mellin-transform techniques to derive generalized expressions for the piston-removed and piston-and-tilt-removed anisoplanatic error in non-Kolmogorov turbulence with a finite outer scale. We use these expressions to investigate the behavior of the anisoplanatic error when imaging over long horizontal paths where the angular extent of the scene is often many times the isoplanatic angle. By evaluating these expressions, we first find that in many cases, the anisoplanatic error saturates to a value less than 1 rad2. Next, as power law increases, the contributions due to piston and tilt dominate the anisoplanatic error expression. Last, the size of the outer scale contributes primarily to the piston and tilt terms. Together, these behaviors imply that when piston and tilt are removed, anisoplanatism is reduced by as much as 60%.
Publication Title
Journal of the Optical Society of America A: Optics and Image Science, and Vision
Recommended Citation
Beck, J.,
&
Bos, J.
(2020).
Angular anisoplanatism in non-Kolmogorov turbulence over horizontal paths.
Journal of the Optical Society of America A: Optics and Image Science, and Vision,
37(12), 1937-1949.
http://doi.org/10.1364/JOSAA.401613
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/14408
Publisher's Statement
© 2020 Optical Society of America. Publisher’s version of record: https://doi.org/10.1364/JOSAA.401613