Analysis of synchronization of satellite communication systems at combined methods of multi -station access to repeater

Spatially-frequency, spatially-time, and spatially-frequency-time multi-station access to the re-translator is a characteristic feature of modern satellite communication systems. The article analyzes the ways of synchronization of satellite communication systems with combined methods of multi-station access to a repeater located on an artificial earth satellite. The analysis will allow us to organize and conduct high-quality research to identify the most optimal method experimentally, taking into account the advantages and disadvantages of each of them.