Geostationary Communications Satellite

In inmarsat s case this is enhanced because we have more than three satellites for each of our l band and global xpress ka band networks allowing us to layer this capacity.

Geostationary communications satellite.

It creates a communication channel between a source transmitter and a receiver at different locations on earth communications satellites are used for television telephone radio internet and military applications. The 1945 proposal by arthur c. The launch of the first geostationary communication satellite syncom 2 which followed a circular path some 35 900 km 22 300 miles above the earth. There are about 2 000 communications satellites.

A large geostationary satellite can provide a large amount of capacity across up to a third of the earth s surface and a network can cover the earth with only three satellites. Not considered seriously at the time it became a reality within 20 years with the launching on 1965 april 6th of intelsat i early bird the first. Clarke who was the first to publish the theory of locating geosynchronous satellites in earth s equatorial plane for fixed communications purposes. A geostationary satellite is an earth orbiting satellite placed at an altitude of approximately 35 800 kilometers 22 300 miles directly over the equator that revolves in the same direction the earth rotates west to east.

The orbital location of geostationary satellites is called the clarke belt in honor of arthur c. Three satellites in geostationary orbit separated by 120x cover most of the inhabited portions of the entire earth excluding only the areas near the north and south poles. A communications satellite is an artificial satellite that relays and amplifies radio telecommunications signals via a transponder. A satellite in a geostationary orbit appears stationary always at the same point in the sky to ground observers.

At this altitude one orbit takes 24 hours the same length of time as the earth requires to rotate once on its axis. Clarke s most famous prediction on the future is his proposal of geostationary satellite communications published in the wireless world magazine in 1945. A geostationary satellite completes one orbit revolution in circular orbit round the earth every 24 h. Syncom 2 was followed by a series of geostationary satellites each providing a capacity greater than the previous generation.

At 35 838 km above the earth the satellite can communicate with roughly one fourth of the earth.