Wideband characteristics of impulsive EM noise emitted from discharges and development of mathematical noise model

Impulsive EM noises emitted from the discharges has been measured and characterized in wideband VHF channel. First, the reproducibility of the EM wave is confirmed by calculating their cross-correlations. Next, the statistical analysis is performed on a amplitude and inter-arrival time of received EM pulses. For our measured data, it is found that probability distributions of the amplitude and inter-arrival time of pulses follow normal and exponential distributions, respectively. Taking into account these wideband characteristics of the impulsive EM waves, a mathematical model of EM waves emitted from discharges is developed in the time domain. This is represented by a simple analytic formula with three parameters that were derived from measurements. These results can be useful in future design for communication systems.