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This paper proposes an efficient and novel technique for assessment of the direction of switched capacitor bank as well as estimating its distance from the monitoring location in real distribution systems. At first, the proposed. The work considered a number of issues arising in the creation of quantum fiber-optic systems of quantum key distribution. A study of the basic principles of the work of Protocol B92 was carried out, distinguishing features from BB84 were noted. In conclusion, there are a number of drawbacks that impose restrictions when working on long routes.

The article discusses issues in the research and trial operation of satellite communications systems in the following operating modes: “satellite - earth”, “earth - earth”. The results of this study will serve as the fundamental basis for creating new promising technical solutions, using which it is possible to create and modernize both classical and quantum multifunctional ground-based systems and on-board radio-technical and optical communication systems.