Carrier-frequency dependence of the basic transmission loss in tropospheric forward scatter propagation

Abstract

A further interpretation is given of certain Lincoln Laboratory data obtained in an experiment using scaled antennas as published by Bolgiano [1959]. This paper has three objectives: (1) to consider the significance of these data as regards the theory of radio propagation through a turbulent atmosphere; (2) to describe a suitable method for the measurement of the meteorological parameters entering the theory; (3) to apply a further statistical analysis to these data. On the basis of this analysis of the Lincoln Laboratory data, it is concluded (1) that the {2/Γ(μ)}(ρ/2)μKμ(ρ) correlation model provides a description of tropospheric turbulence adequate for the description of these data, with μ assigned the fixed value 1, and (2) that the variation of the carrier-frequency dependence of the basic transmission loss from hour to hour arises simply from a lack of correlation in the hourly median losses on widely separated carrier frequencies rather than from changes of μ in this correlation model.