What do you mean by satellite communications ?
Satellite communications is one of the major developments in the field of
telecommunications Satellite Communications is the links to provide
communications between various points in the earth. These satellites uses
electromagnetic waves to carry the information in the form of audio, video,
voice or data between ground and space from any point in the earth.
How does a satellite works ?
A satellite is a communication system which has the ability to send signals
to the earth and receive signals from the earth with the use of transponder
to send and receive radio signals. The frequency with which the signal is
sent into the space is known as uplink frequency and the frequency with
which the signal is sent by the transponder is known as Downlink frequency
Applications of Satellites:
Satellites are used in wide spread way like Television. DTH, VSAT to exploit
the unique capabilities in terms of coverage and outreach .It is also used in
commercial basis over a large number of applications.The three types of
communication service that satellite provides are:
1. Telecommunications
2. Broadcasting
3: Data Communications
Lets us see them in brief of what they are:
1. Telecommunication services: It includes all types of telephonic calls and
services , wireless.mobiles and cellular network providers.
2. Broadcasting: It includes DTH or satellite television services like
DirecTV, DISH TV
3.Data Communications: It involves transfer of data from one point to
another. Generally Financial Organisations and corporates uses
very small apperture terminal(VSAT) networks to facilitate Transfer of data
Development of satellite communication:
1. Sputnik 1 was the first artificial satellite launched successfully by the
Soviet Union on October 4 1957
2. SCORE was the first voice signal satellite which was launched by the
US government on December 9 1958
3. APPLE was the first experimental communication satellite successfully
launched by Ariane -1 from Kouru, French Guiana on June 19.1981
Future of satellite Communication:
In the coming future satellite technology will have more processing
capabilities. more capacity and power,to handle more bandwidth
Communications satellites have made internet access so easy
across each and every facets of society
The demand for more bandwidth with continuing development and
innovation of satellite technology will ensure long term viability of
satellite industry.
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