Communication by Polar-Orbit Satellite Relay

Aircraft on transpolar flights do not have highly reliable noise-free communications. By the use of polar-orbiting satellite repeaters, UHF communications can be utilized. Active, wideband repeaters are proposed in the satellite, using equipment similar to existing hardware. A system is discussed for a 5000-mile altitude satellite orbit and a 3500-mile ground distance separation. Complete system parameters are described. The satellite receiver, noise figure, satellite transmitter power output, and satellite solar power generation system are discussed in greater detail. It is concluded that the system is feasible and practical and could be implemented immediately to provide high probability noise-free communications.