Durations of Power Excursions in a Monostirred Reverberation Chamber

A theoretical and experimental analysis of the probability distributions and statistics of level crossing excursions forthe power received inside a mode-stirred reverberation chamber is presented, under the assumption of a stationary mode-stirring process. Measurement results obtained across a wide range of stir speeds and excitation frequencies show good agreement with theoretical predictions for asymptotically high and low levels of exceedance in overmoded regime. Stir velocity and frequency characteristics of the fundamental second spectral moment of the stir process are determined empirically. The results are relevant to immunity, fading, and reliability testing in reverberation chambers.