Millimeter wave atmospheric turbulence measurements - Preliminary results and instrumentation for future measurements

The study reports experimental and theoretical data on millimeter wave atmospheric turbulence, noting that such turbulence is strongly dependent on temperature and humidity structure parameters. The theoretical data are based on the work of Hill, Clifford and Lawrence (1980) in which an expression is derived for the log amplitude variance of the fluctuations of electromagnetic radiation propagating through the turbulent atmosphere. When compared to experimental data for measurements at 35, 94, 140 and 220 GHz, good agreement is found. Further work will consider the intensity and angle-of-arrival functions, as well as the mutual coherence function for millimeter wave propagation up to 340 GHz.