Very Small Aperture Terminal (VSAT) Communication Networks

Ultra-compact terminal (VSAT) communication network overview The ultra-small terminal (VSAT) communication network is a type of satellite communication that allows commercial and industrial networks to transmit data, voice, and video over satellite links. Companies like Wal-Mart use VSAT to process data from shops nationwide (Lawton, 1994). Understanding the basic knowledge of the VSAT network and how it works will provide a knowledge base for extending various applications.

Abbreviations for earth station for satellite communication of ultra small aperture terminal, data excluding broadcast television, audio and video signal. VSAT is made up of two parts. One is a transceiver that is placed outdoors, placed so that the satellite can be viewed directly, and the other is a device that is placed indoors to connect the transceiver to the end user's communication device (such as a PC). The transceiver sends and receives signals to and from the empty satellite transponder. The satellite sends and receives signals to and from the ground station computer which is the system hub. Each end user is interconnected with the central office via the satellite to form a star topology. The hub controls the operation of the entire network. In order for one end user to communicate with the other end user, each transmission must first enter the central station and then resend to the VSAT of the other end user via the satellite.

In some cases, we need a small satellite network called VSAT, which represents "micro open ended terminal". It refers to the receiving and receiving / sending terminals that are located in geographically remote places and connected to the hub via satellite (Buchsbaum). VSAT terminals are available for various antenna sizes ranging from 2 to 6 M for C, Ku, and K band VSAT networks. The length of the central station is 8 to 9 meters. Each terminal has an optional Frame Relay / Multiplexer with antenna, outdoor transceiver, room modem, multiplexer, and channel interface. Each terminal also includes a monitoring and alarm function (Multipoint)

The Ultra Compact Aperture Terminal (VSAT) is a bidirectional satellite ground station with a dish antenna of less than 3 meters (the antenna range of most VSAT antennas is 75 cm to 2 m). The VSAT data rate is usually between narrowband and 4 Mbit / s. The VSAT accesses the satellites on the geosynchronous orbit and relays the data from the small remote earth station (terminal) to another terminal (mesh configuration) or the primary earth station "hub" (star configuration). VSAT is an ideal means of communication in areas where ground infrastructure is not available or less reliable. As a result, the VSAT service can more closely tie the remote or remote business community by eliminating previously existing geographical barriers and challenges. As a result, the productivity and overall cost efficiency of these communities are improved.