VSAT (Very Small Aperture Terminal) is a technology that is a terminal with a small diameter antenna, a transceiver and a modem, controlled by a communication station from a satellite and an operator on the ground. It is the most widely used delivery technology satellite communications. The small size and high bandwidth of the technology is in demand in the areas of mining, drilling, exploration, logging, law enforcement agencies, the media, wherever stable communication is needed to solve production problems, where there is no fiber optics and GSM networks.
Satellite channels provide users with access to the Internet, telephony (ip telephony), video surveillance; construction corporate networks and allocation of channels for different tasks, including M2M.
GTNT provides communication in Ka and Ku bands on the equipment of leading manufacturers Hughes, Gilat, Istar.
GTNT has a resource on satellites Express - AMU-1, Express AM-5, Express AM-6 in the Ka band and Yamal-401 in the Ku band. This allows us to provide our customers with the full range of necessary services (reserving channels, building corporate networks using several satellites) throughout the Russian Federation.
Ka-band - operates at a frequency of 18.3-18.8 and 19.7-20.2 GHz for satellite-to-Earth transmission, and between 27.5 and 31 GHz for Earth-to-Satellite transmission.
Today, among Russian devices, Ka-band antenna systems are located on Express AM5 satellites - 12 transponders over the territory of the Far East and Siberia, Express AM6 - 12 transponders with a coverage area in the European part of Russia and Western Siberia, Express AMU-1.
Ka-band satellites use multi-beam technology or a plurality of system antennas with a narrow directivity pattern, which helps to obtain a larger flow of radio links in a limited area (with a total diameter of 200-300 km) using a smaller diameter of VSAT antennas compared to C, Ku-bands. The complex use of narrow beams and a higher frequency range helps to qualitatively increase throughput up to 100 Gbps and data transfer rates up to 40-100 Mbps. One of the disadvantages of the Ka band is the sensitivity to precipitation and the degradation of the radio signal than in the Ku and C frequencies.
Ku-band is a system of antennas with a wide radiation pattern that receives and transmits a radio signal from the earth's surface with a diameter of up to 3000 km within a single transponder with a width of 36-72 MHz and occupies the frequencies of 11/14 GHz of geostationary satellites. Operating speeds for the Ku band are up to 8 Mbps in the forward (from the satellite to the subscriber station) channel and up to 3 Mbps in the reverse (from the subscriber station to the satellite).
Terminals in the Ku band usually use TDM/TDMA technology (time division multiplexing / time division multiple access), which makes optimal use of the resource on the satellite, in comparison with SCPC technology, in which the resource is allocated for the use of two stations, and when If these terminals do not use the resource, it remains assigned to them and is not used by other VSATs. TDMA technology allows to reduce the cost of services provided by the operator, since many stations operate in the network and distribute the satellite resource according to the time of use among themselves, if the satellite resource is not used by individual stations, this satellite resource is used by other stations.
GTNT is a great experience of working with the customer in solving the problems of communication services, a qualified team of engineers and managers, around the clock technical support, own resource and software and hardware network management complex, availability of equipment in stock.
Advantages of VSAT equipment:
Satellite Internet is a technology for providing Internet access through an artificial Earth satellite (AES), which acts as a relay between the earth station (CZSSS) and the subscriber's transceiver equipment. Modern technologies allow the use of subscriber stations with small diameter antennas, such stations have an abbreviation consisting of English letters VSAT, which in Russian is read as "visat".
More recently, Satellite Internet technology included two connection methods: one-way satellite Internet and two-way satellite Internet. Currently, one-way satellite Internet is obsolete and is practically not used anymore. Further, Satellite Internet refers to two-way satellite Internet.
Communication satellites, being at a considerable distance from the earth, can provide radio signal coverage for very large areas. For example, one satellite can cover the whole of Europe and the central part of Russia at once, or only 2-3 satellites can cover the entire territory of Russia. Thus, where for thousands of kilometers around there is not a single "wired" Internet provider and there is not a single provider cellular communication, satellite communication technology can easily provide stable and high-speed Internet access!
We list the main advantages of Satellite Internet compared to other wireless Internet technologies:
VSAT(Very Small Aperture Terminal) literally translates as "a terminal with a very small aperture" (antennas).
These are satellite ground stations, specifications which comply with the requirements of Recommendations MCE-R S.725-S.729.
Among the main requirements:
VSAT networks are built on the basis of geostationary repeater satellites. This makes it possible to simplify the design of user terminals as much as possible and to equip them with simple fixed antennas without a satellite tracking system. To ensure operation through small subscriber stations of the VSAT type, satellite transmitters must have an output power of about 40 watts.
Since VSAT stations belong to the Fixed Satellite Service, it is possible to build satellite networks on their basis to provide the services provided by this service, i.e. data transmission, voice transmission, image transmission, videoconferencing, Internet access; multimedia.
VSAT(English) Very Small Aperture Terminal) - a small satellite earth station, a terminal with a small antenna, has been used in satellite communications since the early 90s.
According to the international classification, VSAT includes satellite stations with antennas less than 2.5 meters. As a rule, a simplified procedure for obtaining frequency authorizations is applied for VSAT.
The emergence of VSAT is associated with an experimental satellite telephone network in Alaska, created in the late 60s in the course of experiments with the ATS-1 satellite. The network consisted of 25 earth stations installed in small settlements. The experiment was successful and was extended. It is worth noting that at that time the smallest satellite station had an antenna with a diameter of 9 m and cost about 500 thousand dollars.
Further development and cheaper VSAT systems led to the creation by Equatorio of cost-effective satellite communication systems based on VSAT, which gave impetus to the emergence of new companies offering VSAT equipment. The market began to develop rapidly, and competition in it increased sharply. Finally, the whales of the telecommunications business also paid attention to the market, which, without further ado, began to buy companies that are successfully developing in the market. American telecommunications giant AT&T acquired Tridom. Ku-band VSAT pioneer Linkabit teamed up with M/A-COM to become the leading supplier of VSAT equipment. Hughes Communications subsequently acquired a stake in M/A-COM.
This is how Hughes Network Systems was born. Scientific-Atlanta, a manufacturer of large satellite communication stations, entered the VSAT equipment business by acquiring Adcom. Initially, GTE Spacenet provided VSAT services using equipment from other vendors. Equatorial merged with Contel in 1987, which simultaneously acquired Comsat's VSAT division. And in 1991, GTE Sapacenet acquired Contel. In 1987, the founders of the company created a new company - Gilat Satellite Networks Ltd. for the production of VSAT. Thus, the main pool of players in the VSAT production market was formed, which remains to this day.
VSAT consists of two main parts, ODU (OutDoorUnit) - an external unit, that is, an antenna and a receiver, usually 1-2 W and IDU (InDoorUnit) - an indoor unit or satellite modem.
An outdoor unit (ODU) is an outdoor unit installed at the focus of an antenna that transmits to and receives from the hub via satellite modulated radio signals. The ODU includes semiconductor amplifier(SSPA, BUC), low noise unit downconverter (LNB) and polarization selector (OMT). BUC and LNB are connected to separate OMT ports. This configuration allows the reception of a signal with a certain type of polarization and the transmission of a signal with a different type of polarization, usually orthogonal. The interconnect cable has F-type connectors. Factory VSAT antennas are equipped with feed and OMT.
An indoor unit (IDU) is a small tabletop unit that converts information passing between analogue communications on the satellite and local devices such as telephones, computer networks, PC, TV, etc. In addition to the main conversion programs, IDUs may also contain additional functions, such as security, network acceleration, and other properties.
VSAT(Very Small Aperture Terminal) literally translates as "a terminal with a very small aperture" (antennas).
These are satellite earth stations, the technical characteristics of which comply with the requirements of Recommendations MCE-R S.725-S.729.
Among the main requirements:
VSAT networks are built on the basis of geostationary repeater satellites. This makes it possible to simplify the design of user terminals as much as possible and to equip them with simple fixed antennas without a satellite tracking system. To ensure operation through small subscriber stations of the VSAT type, satellite transmitters must have an output power of about 40 watts.
Since VSAT stations belong to the Fixed Satellite Service, it is possible to build satellite networks on their basis to provide the services provided by this service, i.e. data transmission, voice transmission, image transmission, videoconferencing, Internet access; multimedia.
Worldwide, the number of installed VSAT stations is measured in hundreds of thousands, and the number of subscribers served by them is measured in hundreds of millions.
It should also be noted that, along with such advantages of this technology as the relative cheapness and speed of installation, the use of the VSAT station requires permission from the relevant authorities. Recently, however, a simplified registration procedure for VSAT subscriber terminals has been introduced in Russia.
There are several types of VSAT earth stations. They can be roughly divided into three generations. The advent of each new generation of VSAT became possible with the development of new technologies, the creation of powerful communication satellites and the development of new frequency bands.
The first generation VSATs operated in the C-band and were used only in networks of the TV and radio broadcasting type, i.e. user terminals could only receive data streams, and the transmission mode was not provided for in them. Networks of this type are still widely used for the distribution of financial and business information, stock reports, the transmission of newspaper pages, in asymmetric Internet access systems.
The second generation of VSAT ground stations is characterized by the fact that they can support two-way (duplex) communication. These terminals are used by banking and financial organizations in data exchange networks, in retail and wholesale trade networks, industrial enterprises to communicate with branches and suppliers, as well as to organize high-speed two-way Internet access and telecom operators for dedicated backbone channels between remote nodes with a large volume data exchange. Most of them operate in the Ku-band, although in some countries the networks still use the C-band.
Third-generation terminals with antennas 1.2 m or less in diameter have become very common. They are used in large networks, characterized by a low level of intermittent traffic between them. Such terminals are simple in design, have a low price and operate exclusively in the Ku-band.
Recently, the fourth generation of VSAT for multimedia applications, USAT (Ultra Small Aperture Terminal), has appeared on the market. They operate in the Ku- and Ka-bands and provide speeds up to several megabits per second. At the same time, the size of their antennas (in the Ka-band) does not exceed 76 cm, and the price is in the range of $ 500-1000. An example of such equipment is.
Telephone communications and the Internet, working via satellite, have long been part of modern life. VSAT technology, created on the basis of experimental developments of the 60s of the last century, has become widespread in the new century. You can buy satellite equipment in our online store.
The process requires three components: a satellite, a relay signal, an operator's network control center, and customer equipment. The main link is a powerful complex for receiving and transmitting information flows, which is at the disposal of the central ground node.
Our online store offers a wide range of equipment for organizing high-quality satellite communications and data transmission at speeds up to 30 Mbps.
This system was first used in Alaska, and has been actively used in the world since the 90s. It consists in the organization of data transmission by means of geostationary satellites. The first models of antennas were up to 9 m in size, but today these devices are up to 2.5 m in diameter and belong to the class of small satellite stations.
We have several modifications of various VSAT components in our assortment for building an individual satellite station of the configuration you need. And to consult on this matter and choose the necessary model according to the parameters, call us. We will select the model you need.
Difficult to choose? You
Personal access to the "world" from a personal computer, communication with company employees at any time during working hours, increasing the efficiency of their work due to the ability to quickly respond to the information provided - these are the factors that form the requirements for modern communication technologies.
Therefore, satellite Internet from the AltegroSky operator is more than just access to content - it is aimed at ensuring reliable operation with IP services, including the transmission of voice, data, video, audio and video conferences, which allow organizing operational management and interaction of specialists from remote divisions of large companies.
Individual VSAT for private users - perfect solution for a modern and comfortable country life: satellite Internet will allow you not to interrupt communication, study and work, providing access to popular Internet services, social networks, games, news and entertainment content in a country house, in a country house, in a cottage - like in a city apartment!
The principle of organizing the service is very simple. The user only needs electricity to operate. All processing of Internet traffic is performed in the NCC and depends on the VSAT platform used by the operator.
In our network, we use technologies that ensure the correct processing of any IP protocols, which allows the user to work with the necessary Internet applications:
Therefore, it is worth buying satellite Internet for anyone who would like to have maximum opportunities for online communication - regardless of their location, both in Russia and abroad.
Two-way satellite Internet works through the VSAT (Very Small Aperture Terminal) terminal - a satellite ground station with a small antenna (from 0.6 to 2.4 m) in diameter. In modern satellite networks this size is enough to organize a symmetrical Internet. Assembling the terminal does not require special skills, and taking into account the low weight, the solution provides high mobility and ease of networking. To connect to bi-directional satellite Internet, you need a small VSAT satellite earth station.
The standard subscriber set consists of:
The most popular kits for two-way satellite Internet are terminals with 0.74m, 0.98m and 1.2m antennas.
You can independently determine the parameters necessary for connecting and configuring satellite Internet using the Satellite Finder.
With us - you choose reliable and affordable two-way satellite Internet! We will be glad to see you among our clients.
