What Is a VSAT System?
VSAT, which stands for very small aperture terminal, is a communication system that employs orbital satellites, ground stations and a network of end users, all linked with each other. This technology has come into its own as the cost of sending and receiving data via satellite has fallen, making it practical for a wide variety of end users.
Other People Are Reading
-
Features
-
The VSAT uses a hub station on the ground that is linked to computers deployed by end users. The hub station uses a large antenna, while the other ground stations deploy a smaller directional antenna, from 75 centimeters to 2.5 meters in diameter, which can be fixed to a rooftop or exterior wall. Outdoor units transmit a signal to and from inside units, which provide the end-user interface.
Function
-
Voice, data and video signals generated by the end users on the ground are received and transmitted via a transponder on an orbital satellite. The satellite is placed in a geosynchronous orbit, meaning it remains stationary over a single point on the ground. This allows the satellite to provide uninterrupted service and wide geographical coverage among its end users.
-
Benefits
-
Businesses can operate a VSAT system of their own, or lease one from another company. For example, an in-house VSAT system allows a large company control over data transmission between operations headquarters and branch offices, without the use of a third-party service provider.
Uses
-
VSAT also offers quicker transmission of data than is available with broadband Internet service. It is useful for transmitting video and voice from mobile ground stations, such as television trucks; for satellite telephone service; for voice-over Internet services; for Internet service in remote locations; for ship radios; or for point-of-sale transactions in a network of retail stores.
Cost
-
The costs associated with VSAT systems has fallen in recent years, making this method of communicating practical for a wider range of users. In many locations, and for many users, VSAT provides a more efficient and less costly method of handling data than high-speed telephone lines.
-
References
- Photo Credit antenna image by Irina Kodentseva from Fotolia.com
