Errors of quasi-optimal algorithms with feedbacks on discrete parameters for receiving and processing BOC signals in advanced global navigation satellite systems

An assessment of the potential accuracy and noise immunity of quasi-optimal algorithms for receiving and processing noise-like signals, in particular BOC signals, designed for use in global navigation satellite systems such as GPS (USA), Galileo (EU), GLONASS (Russia) and BeiDou (China), synthesized on the basis of Markov estimation theory using a method with feedback on discrete parameters, was carried out. Analytical relationships for the variance of the quasi-optimal error of the estimated random phase and the probability of erroneous reception of the discrete parameter of the received BOC signals are obtained. The results of calculating the accuracy characteristics of these parameters are presented. The corresponding graphs are constructed.