Probabilistic Model of Satellite Radio Communication Channel at Small Elevation Angles

. The article presents a synthesized probabilistic model of a satellite radio channel with signal fading at small elevation angles in the form of a multidimensional reduced probability measure that takes into account the dynamic characteristics of therandom fading process. The model is the basis for calculating the characteristics of the receiving radio channel when fading occurs. The proposed model makes it possible to obtain numerical dependences of the probability of message transmission as indicators of the quality of communication from the dynamic characteristics of the fading process (correlation interval, duration and volume of messages, statistical parameters). Based on the synthesized probabilistic model, the influence of the ratio of the correlation interval to the communication session interval on the probability of a non-disruptive communication was determined and investigated. The probability of a seamless connection in a finite time interval is the probability that during this time the signal level does not fall below a specified threshold value. To calculate the probability of a non-disruptive communication, a general formula of the multidimensional probability density for Rayleigh fading statistics is derived and presented, taking into account the dynamic characteristics of the random fading process.