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Satellite Communication – Services



The services of satellite communication can be classified into the following two categories.

  • One-way satellite communication link service
  • Two-way satellite communication link service

Now, let us discuss about each service one by one

One-way Satellite Communication Link Service

In one-way satellite communication link service, the information can be transferred from one earth station to one or more earth stations through a satellite. That means, it provides both point to point connectivity and point to multi point connectivity.

Below figure shows an example of one-way satellite communication link service.

How Satellite Works

Here, the communication takes place between first earth station (transmitter) and second earth station (receiver) on earth’s surface through a satellite in one direction.

Following are some of the one-way satellite communication link services.

  • Broadcasting satellite services like Radio, TV and Internet services.

  • Space operations services like Telemetry, Tracking and Commanding services.

  • Radio determination satellite service like Position location service.

Two-way Satellite Communication Link Service

In two-way satellite communication link, the information can be exchanged between any two earth stations through a satellite. That means, it provides only point to point connectivity.

The following figure shows an example of two-way satellite communication link service.

two-way satellite communication

Here, the communication takes place between first earth station (transmitter) and second earth station (receiver) on earth’s surface through a satellite in two (both) directions.

Following are some of the two-way satellite communication link services.

  • Fixed satellite services like Telephone, Fax and Data of high bit rate services.

  • Mobile satellite services like Land mobile, Maritime and Aero mobile communication services.

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