Research on Digital Simulation Technology of Satellite-Ground Wireless Channel Based on Digital Twin

With the increasing demand for satellite communications and the development of new technologies, in recent years, more and more countries and institutions have joined in the development and use of Ka-band satellite communications systems. Aiming at the requirement of seamless switching communication between multi-orbit, multi-satellite, and satellite-ground coverage areas, this paper designs a satellite-ground wireless channel digital simulation system based on the digital twin. The digital simulation system realizes the visual demonstration and verification of seamless switching communication between multi-orbit, multi-satellite, and satellite-ground coverage areas in the satellite-ground communication scenario. It is used for system simulation performance verification of Ka-band satellite communication load and terminal, shortens its development cycle.