Satellite radio system
Space system using artificial satellites
From Wikipedia, the free encyclopedia
Satellite radio system (also: satellite system) is – according to article 1.111 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR)[1] – defined as «A space system using one or more artificial earth satellites.»

Satellite system with three earth stations and one space station
Each system shall be classified by the service in which it operates permanently or temporarily.