Abstract
ABSTRACT Atmospheric turbulence is one of the important correc tion factors to evaluate the earths surface using a sensor on a satellite. CO 2 and aerosol are selected as factors of turbulence. The effects of turbulence caused by CO 2 and aerosol on the light refl ected from the earths surface are estimated by measuring the degradation of spatial coherence of light in a chambe r in which atmospheric turbulence is generated. Dry ice is used to generate carbon dioxide gas. Degradation of spatial coherence is measured in relation to the increase of CO 2 . Turbulence caused by aerosol is measured by density of smoke cigarettes. The spatial coherence of light in the chamber degrades in relation to the increase of aerosol and as a result the turbulence increases. The relation between the turbulence and the degree of spatial coherence is explained in a formula. Keywords ; spatial coherence, turbulence, aerosol I. INTRODUCTION The quality of images obtained by an astronomical telescope set on the earth surface is damaged by atmospheric turbulence, although the images obtained by Hubble space telescope launched into the space are free from the effects of turbulence. There have b een many papers on the study of turbulence such as those by Gamo
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