|
KA-SAT Spot Beams Coverage
KA-SAT is a high-throughput geostationary telecommunications satellite owned by Viasat. The satellite provides bidirectional broadband Internet access services across Europe and a small area of the Middle East, and additionally the Saorsat TV service to Ireland. It is positioned at 9°E, joining the Eurobird 9A Ku band satellite. KA-SAT was manufactured by EADS Astrium, based on the Eurostar E3000 platform, with a total weight of 6 tons. It was launched by Proton in December 2010. The satellite is named after the Ka band frequency, which is used on the spacecraft. In November 2020, Viasat purchased Eutelsat's share of Euro Broadband Infrastructure (EBI) for $166 million (140 million euro), giving Viasat total ownership of the KA-SAT satellite and related ground infrastructure. The purchase was completed on April 30, 2021. Spacecraft The spacecraft is equipped with four multi-feed deployable antennas with enhanced pointing accuracy and a high-efficiency repeater. It is confi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Satellite
A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a Transponder (satellite communications), transponder; it creates a communication channel between a source transmitter and a Radio receiver, receiver at different locations on Earth. Communications satellites are used for television, telephone, radio, internet, and military applications. Many communications satellites are in geostationary orbit above the equator, so that the satellite appears stationary at the same point in the sky; therefore the satellite dish antennas of ground stations can be aimed permanently at that spot and do not have to move to track the satellite. Others form satellite constellations in low Earth orbit, where antennas on the ground have to follow the position of the satellites and switch between satellites frequently. The radio waves used for telecommunications links travel by Line-of-sight propagation, line of sight and so are obstructe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurobird 9A
Eurobird was a series of satellites owned and operated by Eutelsat. The Eurobird satellites provided broadcasting and telecommunication services primarily to the Western and Central European region from orbital positions of 9, 25.5 and 33 degrees East. The Eurobird brand was phased out on 1 March 2012, with the satellites becoming part of Eutelsat's main fleet in a company-wide rebranding. Eurobirds still in operation: * Eutelsat 33C (formerly Eurobird 1 and Eutelsat 28A), located at 33° East, carries no services at the moment. * Eutelsat 25B / Es'hail (formerly Eurobird 2), located at 25.5° East, was formerly Hot Bird 5 at 13° East. It is more commonly referred to as Arabsat 2D, and carries mostly free-to-air television. * Eutelsat 33A (formerly Eurobird 3), located at 33° East, mainly used for satellite internet access. *Eutelsat 9A (formerly Eurobird 9A), located at 9° East, carries the German KabelKiosk package, the Russian Platform HD package, and American Forces Network ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Customer-premises Equipment
In telecommunications, a customer-premises equipment or customer-provided equipment (CPE) is any terminal and associated equipment located at a subscriber's premises and connected with a carrier's telecommunication circuit at the demarcation point ("demarc"). The demarc is a point established in a building or complex to separate customer equipment from the equipment located in either the distribution infrastructure or central office of the communications service provider. CPE generally refers to devices such as telephones, routers, network switches, residential gateways (RG), set-top boxes, fixed mobile convergence products, home networking adapters and Internet access gateways that enable consumers to access providers' communication services and distribute them in a residence or enterprise with a local area network (LAN). A CPE can be an active equipment, as the ones mentioned above, or passive equipment such as analog telephone adapters (ATA) or xDSL-splitters. This i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ViaSat
Viasat may refer to: *Viasat (American company) (founded 1986) ** Viasat hack, a cyberattack on the Viasat KA-SAT network that happened in February 2022 *Viasat (Nordic television service) Viasat is a direct broadcast satellite, satellite and pay television brand, founded in Sweden in 1991. Viasat has previously been owned by Modern Times Group, Modern Times Group (MTG). The channels of both companies were broadcast from London. ... (founded 1991) * Viasat Cup, 2006 Danish football tournament * Viasat Ukraine, a Ukrainian direct broadcast satellite television distributor *Viasat World, operator of: ** Viasat Nature ** Viasat Explore ** Viasat History * Viasat 1, a Ghanaian television channel * Viasat 3, a Hungarian TV channel * Viasat 6, a thematic television channel of Sony Pictures Television Networks See also * ViaSat-1, ViaSat-2, and ViaSat-3, satellites launched by the American company {{Disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Network Operations Center
A network operations center (NOC, pronounced like the word ''knock''), also known as a "network management center", is one or more locations from which network monitoring and control, or network management, is exercised over a computer, telecommunication or satellite network. __TOC__ History The earliest NOCs started during the 1960s. A Network Control Center was opened in New York by AT&T in 1962 which used status boards to display switch and routing information, in real-time, from AT&T's most important toll switches. AT&T later replaced this Network Control Center with a modernized NOC in 1977, located in Bedminster, New Jersey. Purpose NOCs are implemented by business organizations, public utilities, universities, and government agencies that oversee complex networking environments that require high availability. NOC personnel are responsible for monitoring one or many networks for certain conditions that may require special attention to avoid degraded service. Organizatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tooway
Tooway is a satellite broadband Internet service available across Europe. The first version of the service was launched in 2007 via two Eutelsat geostationary satellites, Hot Bird 6 and Eurobird 3, respectively at the 13° and 33° East orbital positions. At the end of 2010, Eutelsat launched KA-SAT, the first European High Throughput Satellite to operate in Ka band. KA-SAT was positioned at 9° East, and delivers Internet access and broadcast services toward Europe and the Mediterranean Basin. Commercial service started on KA-SAT at the end of May 2011. Tooway services over KA-SAT satellite provide up to 50 Mbit/s downstream and up to 6 Mbit/s upstream. Services Tooway makes use of the Internet Protocol over satellite to provide consumers across Europe and the Mediterranean Basin with Internet access. Unlike services relying on terrestrial infrastructures (such as cable or ADSL), satellites provide service in wide coverage areas as broad as a continent. Terrest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earth Station
A ground station, Earth station, or Earth terminal is a terrestrial radio station designed for extraplanetary telecommunication with spacecraft (constituting part of the ground segment of the spacecraft system), or reception of radio waves from astronomical radio sources. Ground stations may be located either on the surface of the Earth, or in its atmosphere. Earth stations communicate with spacecraft by transmitting and receiving radio waves in the super high frequency (SHF) or extremely high frequency (EHF) bands (e.g. microwaves). When a ground station successfully transmits radio waves to a spacecraft (or vice versa), it establishes a telecommunications link. A principal telecommunications device of the ground station is the parabolic antenna. Ground stations may have either a fixed or itinerant position. Article 1 § III of the International Telecommunication Union (ITU) Radio Regulations describes various types of stationary and mobile ground stations, and their inter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KA-SAT Spot Beams Coverage
KA-SAT is a high-throughput geostationary telecommunications satellite owned by Viasat. The satellite provides bidirectional broadband Internet access services across Europe and a small area of the Middle East, and additionally the Saorsat TV service to Ireland. It is positioned at 9°E, joining the Eurobird 9A Ku band satellite. KA-SAT was manufactured by EADS Astrium, based on the Eurostar E3000 platform, with a total weight of 6 tons. It was launched by Proton in December 2010. The satellite is named after the Ka band frequency, which is used on the spacecraft. In November 2020, Viasat purchased Eutelsat's share of Euro Broadband Infrastructure (EBI) for $166 million (140 million euro), giving Viasat total ownership of the KA-SAT satellite and related ground infrastructure. The purchase was completed on April 30, 2021. Spacecraft The spacecraft is equipped with four multi-feed deployable antennas with enhanced pointing accuracy and a high-efficiency repeater. It is confi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eutelsat
Eutelsat S.A. is a French satellite operator. Providing coverage over the entire European continent, the Middle East, Africa, Asia and the Americas, it has been the world's third-largest satellite operator in terms of revenues. Its subsidiary Eutelsat OneWeb is a competitor to Elon Musk's Starlink. Eutelsat's satellites are used for broadcasting nearly 7,000 television stations, of which 1,400 are in high-definition television, and 1,100 radio stations to over 274 million cable and satellite homes. They also serve requirements for TV contribution services, corporate networks, mobile communications, Internet backbone connectivity and broadband access for terrestrial, maritime and in-flight applications. Eutelsat is headquartered in Paris, France. Eutelsat Communications Chief Executive Officer is currently Eva Berneke. In October 2017, Eutelsat acquired Noorsat, one of the leading satellite service providers in the Middle East, from Bahrain's Orbit Holding Group. Noorsat is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gbit/s
In telecommunications, data transfer rate is the average number of bits ( bitrate), characters or symbols ( baudrate), or data blocks per unit time passing through a communication link in a data-transmission system. Common data rate units are multiples of bits per second (bit/s) and bytes per second (B/s). For example, the data rates of modern residential high-speed Internet connections are commonly expressed in megabits per second (Mbit/s). Standards for unit symbols and prefixes Unit symbol The ISQ symbols for the bit and byte are ''bit'' and ''B'', respectively. In the context of data-rate units, one byte consists of 8 bits, and is synonymous with the unit octet. The abbreviation bps is often used to mean bit/s, so that when a ''1 Mbps'' connection is advertised, it usually means that the maximum achievable bandwidth is 1 Mbit/s (one million bits per second), which is 0.125 MB/s ( megabyte per second), or about 0.1192 MiB/s ( mebibyte per second). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orbital Maneuver
In spaceflight, an orbital maneuver (otherwise known as a burn) is the use of propulsion systems to change the orbit of a spacecraft. For spacecraft far from Earth, an orbital maneuver is called a ''deep-space maneuver (DSM)''. When a spacecraft is not conducting a maneuver, especially in a transfer orbit, it is said to be ''coasting''. General Rocket equation The Tsiolkovsky rocket equation, or ideal rocket equation, can be useful for analysis of maneuvers by vehicles using rocket propulsion. A rocket applies acceleration to itself (a thrust) by expelling part of its mass at high speed. The rocket itself moves due to the conservation of momentum. Delta-v The applied change in velocity of each maneuver is referred to as delta-v (\Delta\mathbf\,). The delta-v for all the expected maneuvers are estimated for a mission are summarized in a delta-v budget. With a good approximation of the delta-v budget designers can estimate the propellant required for planned maneuve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bit Rate
In telecommunications and computing, bit rate (bitrate or as a variable ''R'') is the number of bits that are conveyed or processed per unit of time. The bit rate is expressed in the unit bit per second (symbol: bit/s), often in conjunction with an SI prefix such as kilo (1 kbit/s = 1,000 bit/s), mega (1 Mbit/s = 1,000 kbit/s), giga (1 Gbit/s = 1,000 Mbit/s) or tera (1 Tbit/s = 1,000 Gbit/s). The non-standard abbreviation bps is often used to replace the standard symbol bit/s, so that, for example, 1 Mbps is used to mean one million bits per second. In most computing and digital communication environments, one byte per second (symbol: B/s) corresponds roughly to 8 bit/s. However if stop bits, start bits, and parity bits need to be factored in, a higher number of bits per second will be required to achieve a throughput of the same number of bytes. Prefixes When quantifying large or small bit rates, SI ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
