Vol. 13, issue 11, article # 12

pdf Zhukov A. F., Vostretsov N. A. Relationship between the receiver diameter and the light flux fluctuations in a narrow divergent laser beam propagating through a snowfall. Part 2. Autocorrelation function. // Atmospheric and oceanic optics. 2000. V. 13. No. 11. P. 962-969.
Copy the reference to clipboard

We have measured autocorrelation function of a narrow divergent laser beam propagated along 10 different paths (from 14 to 1928 m) under snowfall conditions. The correlation time was analyzed at the levels of 0.5, 0.3, 0.1, 0.05, and zero level depending on the receiver's diameter (Dr), wind velocity (V), and maximum size of particles in the snowfall (Dm). It is shown that under close (similar) atmospheric conditions, that is, V and Dm the correlation time at 0.5 level decreases with the decrease of the receiver's diameter. It also decreases at a fixed Dr with the growth of V and decreasing Dm.