Improvement of the Methodology of Building a System of Phase Synchronization of Coherent Demodulators in Telecommunication Control Systems and Distance Learning

Abstract

One of the factors of internal disturbances and obstacles in the operation of the system of synchronization of coherent demodulators of telecommunication control systems and remote learning, which directly affect the efficiency of the entire system, are transient processes caused by the system's reaction to the transition from one stationary state to another stationary state. At the current stage of research devoted to the issue of minimizing the influence of the transient process on the operation of the phase synchronization system, increasing the speed and reducing the transient component of the phase error, which is generated by transient processes, was solved by the synthesis of an open connection under the condition of minimizing the phase error in the stable and transient modes of operation of the synchronization system. The solution of the specified task was solved by the method of synthesis of an open connection, the link of which had a permanent structure. As an improvement of the methodology for building a system of phase synchronization of coherent demodulators for telecommunication control and distance learning systems, a mathematical model and a method based on it are proposed in the work, which allows for the synthesis of the open link of the combined synchronization system with a variable structure. Thanks to this, further minimization of the influence of transient processes on the efficiency of the synchronization system of the coherent demodulator is ensured. The scheme of open communication with a variable structure proposed in the paper allows to minimize the influence of the transient process on the efficiency of the synchronization system by influencing the time of the transient process. The assessment carried out in the work of the possibility of an open connection link with a variable structure in terms of the influence on the time of the transient process in the system showed that by logically switching to an open connection branch with the appropriate values of the time operator, it is possible to achieve up to 6 or more times the reduction of the time of the transient process in compared to the transient process in a system with a stable scheme of an open communication link. This ensures an increase in the efficiency of receiving the input signal by the coherent demodulator and affects the quality of data transmission in telecommunication control and distance learning systems.