Abstract
The effects of weather conditions on the image propagation through the atmosphere were studied experimentally. The white and black patterns which have the spatial frequencies of 1-25 cycle/mrad were observed at the point 400m from the patterns. Experimental data are discussed using the modulation transfer function (MTF) as functions of the temperature (T), the humidity (H), the solar irradiancy (SI), the wind velocity (WV) and number of temperature variation per sec (TV).
It is found that there are no interrelations between MTF and H and T in the propagation path, but that MTF decreases in proportion to exp [-(SI×WV)/TV].
