Influence of random stratification on the intensity of the coherent component of a UHF signal beyond the horizon

<title>Effect of random layers on atmospheric propagation</title>

“…These are localized along the transverse z-axis and propagate along the layer with a rate of attenuation F which is exponentially small for L/! >> 1: 2 (29) Their energy is canalized to distances D from the source that are exponentially large as compared with the layer thickness, 1 (30) D'-'Le' r Thus, a randomly stratified, statistically uniform medium represents a fluctuational duct whose underlying physical effect is not regular refraction but interference of the fields multiply scattered by fluctuations of the dielectric constant. …”

“…For this purpose, the statistical approach is most efficient. In the framework of this approach the dielectric constant of the atmosphere is treated as a random function, and may be represented in the form (1) C (R) = c0(z) + e (R) R = (x,y,z). z is taken to be altitude over the earth's surface.…”