Image resolution measurement for horizontal propagation in the atmosphere

Cemin Su; Ruizhong Rao; Honghua Huang; Yingjian Wang

doi:10.1117/12.619514

12 May 2005 Image resolution measurement for horizontal propagation in the atmosphere

Cemin Su, Ruizhong Rao, Honghua Huang, Yingjian Wang

Proceedings Volume 5832, Optical Technologies for Atmospheric, Ocean, and Environmental Studies; (2005) https://doi.org/10.1117/12.619514
Event: Optical Technologies for Atmospheric, Ocean, and Environmental Studies, 2004, Beijing, China

Abstract

The effect of atmospheric turbulence on the imaging of a pattern similar to an eye chart composed of LED array, for horizontal propagation of the light over a distance of 1000m, was analyzed at visible wavelenghts using a 355.6 mm telescope. Point Spread Function (PSF) and the images were recorded simlutaneously during the night. The Fried's parameter r₀ was derived from the measured variance of image motion, leading to r₀ values ranging from 5 to 30 cm depending on observing conditions. Very strong image motion and severely degraded images were observed. The relationship between the image resolution and the Fried's parameter is visually shown.

Citation Download Citation

Cemin Su, Ruizhong Rao, Honghua Huang, and Yingjian Wang "Image resolution measurement for horizontal propagation in the atmosphere", Proc. SPIE 5832, Optical Technologies for Atmospheric, Ocean, and Environmental Studies, (12 May 2005); https://doi.org/10.1117/12.619514

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