Research of the Possibilities of Upgrading the Radio Path of a Repeater Using Software-Defined Devices

This paper analyzes the possibilities of upgrading the onboard repeater of the satellite communication system taking into account the development trend of modern technologies. The objective of the study is to identify a universal technical solution that facilitates the creation of such systems through the utilisation of software-defined radio. The paper's central theme is an in-depth study of the repeater radio channel scheme, with a particular focus on the replacement of a portion of the microwave devices with software-defined radio technology. The study proposes a radio channel model that facilitates a qualitative assessment modernization schemes and the configuration of the software-defined radio program, with the potential to markedly accelerate the development of novel hardware solutions.