Ground station

Ground station

![Parkes Observatory pointing toward the Moon, receiving data from Apollo 11 mission back to Earth](//upload.wikimedia.org/wikipedia/commons/thumb/0/00/CSIROScienceImage4350CSIROsParkesRadioTelescopewithmooninthebackground.jpg/250px-CSIROScienceImage4350CSIROsParkesRadioTelescopewithmooninthebackground.jpg)


Ground station

A ground station, Earth station, or Earth terminal is a terrestrial radio station designed for extraplanetary telecommunication with spacecraft (constituting part of the ground segment of the spacecraft system), or reception of radio waves from astronomical radio sources. Ground stations may be located either on the surface of the Earth, or in its atmosphere. Earth stations communicate with spacecraft by transmitting and receiving radio waves in the super high frequency (SHF) or extremely high frequency (EHF) bands) (e.g. microwaves). When a ground station successfully transmits radio waves to a spacecraft (or vice versa), it establishes a telecommunications link. A principal telecommunications device of the ground station is the parabolic antenna.


Ground station

Ground stations may have either a fixed or itinerant position. Article 1 § III of the International Telecommunication Union (ITU) Radio Regulations describes various types of stationary and mobile ground stations, and their interrelationships.

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