Short-term amplitude scintillations at 97 GHz on 6.5 km urban link

The authors present the results of short-term amplitude scintillation measurements derived from data collected at 97 GHz using an experimental terrestrial line-of-sight link of 6.5 km which has been in operation since August 1998 across the city of Portsmouth. The presented short-term probability density function and power spectrum density justify the use of weak-scattering theory. However, the results indicate that in cases of more active scintillations the spectrum slope, in high frequency regions, deviates slightly from von Karman´s representation of the Kolmogorov refractive index spectrum. The results serve to confirm or establish more firmly the theory of turbulence