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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.
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.
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.