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ViaSat-1
ViaSat-1 is a high throughput communications satellite owned by Viasat Inc. and Telesat Canada. Launched October 19, 2011 aboard a Proton rocket, it held the Guinness record for the world's highest capacity communications satellite with a total capacity in excess of 140 Gbit/s, more than all the satellites covering North America combined, at the time of its launch. ViaSat-1 is capable of two-way communications with small dish antennas at higher speeds and a lower cost-per-bit than any satellite before. The satellite is positioned at 115.1 degrees West longitude geostationary orbit point, with 72 Ka-band spot beams; 63 over the U.S. (Eastern and Western states, Alaska and Hawaii), and nine over Canada. The Canadian beams are owned by satellite operator Telesat and are used for the Xplornet broadband service to consumers in rural Canada. The US beams provide fast Internet access called Exede, Viasat's satellite Internet service. ViaSat-1 is part of a new satellite system archit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viasat (American Company)
Viasat Inc. is an American communications company based in Carlsbad, California, with additional operations across the United States and worldwide. Viasat is a provider of high-speed satellite broadband services and secure networking systems covering military and commercial markets. History Viasat was co-founded in May 1986 by Mark Dankberg, Mark Miller and Steve Hart. Mark Dankberg became chief executive officer and Mark Miller and Steve Hart became chief technical officers. Viasat received venture capital financing of $300,000 from Southern California Ventures. In December 1996, Viasat had its initial public offering (IPO). In 1999, Viasat moved into its headquarters in Carlsbad, California. Viasat launched a spin-off company, TrellisWare Technology, in 2000. The self-funded company focuses on developing communications and signal processing systems. The acquisition of the satellite networking business of Scientific-Atlanta for $75 million in cash in 2000 helped Viasat to f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-throughput Satellite
High-throughput satellite (HTS) is a communications satellite that provides more throughput than a classic FSS satellite (at least twice, though usually by a factor of 20 or more) for the same amount of allocated orbital spectrum, thus significantly reducing cost-per-bit. ViaSat-1 and EchoStar XVII (also known as Jupiter-1) do provide more than 100 Gbit/s of capacity, which is more than 100 times the capacity offered by a conventional FSS satellite. When it was launched in October 2011 ViaSat-1 had more capacity (140 Gbit/s) than all other commercial communications satellites over North America combined. Overview The significant increase in capacity is achieved by a high level frequency re-use and spot beam technology which enables frequency re-use across multiple narrowly focused spot beams (usually in the order of hundreds of kilometers), as in cellular networks, which both are defining technical features of high-throughput satellites. By contrast traditional satellite technolog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications In The Isle Of Man
The Isle of Man has an extensive communications infrastructure consisting of telephone cables, submarine cables, and an array of television and mobile phone transmitters and towers. Telecommunications Telegraph The history of Manx telecommunications starts in 1859, when the Isle of Man Electric Telegraph Company was formed on the island with the intention of connecting across the island by telegraph, and allowing messages to be sent onwards to the UK. In August 1859, a long cable was commissioned from Glass, Elliot and Company of Greenwich and laid from Cranstal (north of Ramsey) to St Bees in Cumbria using the chartered cable ship ''Resolute''. The cable was single-core, with gutta-percha insulation. Twenty miles of overhead cable were also erected from Cranstal south to Ramsey, and on to Douglas. In England, the telegraph was connected to Whitehaven and the circuits of the Electric Telegraph Company. The telegraph offices were located at 64 Athol Street, Douglas (also the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ViaSat-2
ViaSat-2 is a commercial communications satellite launched June 1, 2017 and went live late February 2018. It was advertised to be the world's highest capacity communications satellite with a throughput of 300 Gbit/s, succeeding HughesNet EchoStar XIX launched in December 2016. It is the second Ka-band satellite launched by ViaSat after ViaSat-1. The satellite provides internet service through ViaSat (Exede prior to rebranding) to North America, parts of South America, including Mexico and the Caribbean, and to air and maritime routes across the Atlantic Ocean to Europe. History In May 2013, ViaSat gave the construction contract of the satellite to Boeing. On May 1, 2014 ViaSat sold capacity on the satellite to Xplornet Communications. In January 2015, ViaSat gave the launch contract to SpaceX in an uncontested auction. After SpaceX CRS-7 exploded after launch in June 2015, concerns arose that the investigation may affect the mission's launch window. On February 9, 2016 Arianesp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satellite Internet Access
Satellite Internet access is Internet access provided through communication satellites. Modern consumer grade satellite Internet service is typically provided to individual users through geostationary satellites that can offer relatively high data speeds, with newer satellites using to achieve downstream data speeds up to 506 Mbit/s. In addition, new satellite internet constellations are being developed in low-earth orbit to enable low-latency internet access from space. History Following the launch of the first satellite, Sputnik 1, by the Soviet Union in October 1957, the US successfully launched the Explorer 1 satellite in 1958. The first commercial communications satellite was Telstar 1, built by Bell Labs and launched in July 1962. The idea of a geosynchronous satellite—one that could orbit the Earth above the equator and remain fixed by following the Earth's rotation—was first proposed by Herman Potočnik in 1928 and popularised by the science fiction author Art ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LS-1300
The SSL 1300, previously the LS-1300 and the FS-1300, is a satellite bus produced by Maxar Technologies. Total broadcast power ranges from 5 to 25 kW, and the platform can accommodate from 12 to 150 transponders. The SSL 1300 is a modular platform and Maxar Technologies no longer reports designators for sub-versions, such as: 1300E, 1300HL, 1300S, 1300X. First available in the late 1980s, the SSL 1300 platform underwent revision multiple times over its design life, all the while remaining a popular communications platform. The earliest models provided 5,000 RF watts of transmitter power, weighed 5,500 kg, and required a 4-meter diameter launch fairing. Newer models provide double that, approximately 10,000 RF watts of transmitter power, weigh 6,700 kg, and require a 5-meter diameter launch fairing. SSL stated that they would use electric propulsion for North-South station keeping for the first time on the MBSat in 2004. The subsystem was supplied by International ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proton-M
The Proton-M, (Протон-М) GRAU index 8K82M or , is an expendable Russian heavy-lift launch vehicle derived from the Soviet-developed Proton. It is built by Khrunichev, and launched from sites 81 and 200 at the Baikonur Cosmodrome in Kazakhstan. Commercial launches are marketed by International Launch Services (ILS), and generally use Site 200/39. The first Proton-M launch occurred on 7 April 2001. Proton flew its most recent mission on 13 December 2021, launching two Ekspress communication satellites into geostationary orbit. As of August 2020, a number of Roscosmos and other Russian government missions remain on Proton launch manifest. Vehicle description The Proton-M launch vehicle consists of three stages; all of them powered by liquid rocket engines using the hypergolic propellant combination of dinitrogen tetroxide as the oxidizer, and unsymmetrical dimethylhydrazine for fuel. The first stage is unique in that it consists of a central cylindrical oxidizer tank ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Briz-M
The Briz-K, Briz-KM and Briz-M (russian: Бриз-К, КM and M meaning ''Breeze-K, KM and M'') are Russian liquid-propellant rocket orbit insertion upper stages manufactured by Khrunichev State Research and Production Space Center and used on the Proton-M and Angara A5. The upper stages were also used on Rokot, one of Russia's smaller launchers, before its retirement in 2019. Characteristics Briz-K and Briz-KM Briz-K, GRAU index 14S12, is a single-piece structure with a conical tank compartment and the engine located in a recess in the fuel tank. Briz-KM (GRAU index 14S45) is an improved version of Briz-K. The Briz-K and Briz-KM were used as a third stage of the Rokot launch vehicles. Briz-M Briz-M, GRAU index 14S43, is designed for injecting large payloads into a low, medium-height or high geosynchronous orbit. Briz-M is a twin upper stage consisting of a core module (using Briz-KM as the baseline) and a jettisonable add-on toroidal tank surrounding the core. It is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proton Rocket
Proton (Russian: Протон) (formal designation: UR-500) is an expendable launch system used for both commercial and Russian government space launches. The first Proton rocket was launched in 1965. Modern versions of the launch system are still in use as of 2022, making it one of the most successful heavy boosters in the history of spaceflight. The components of all Protons are manufactured at the Khrunichev State Research and Production Space Center factory in Moscow and Chemical Automatics Design Bureau in Voronezh, then transported to the Baikonur Cosmodrome, where they are assembled at Site 91 to form the launch vehicle. Following payload integration, the rocket is then brought to the launch pad horizontally by rail, and raised into vertical position for launch. As with many Soviet rockets, the names of recurring payloads became associated with the launch vehicle itself. The moniker "Proton" originates from a series of similarly named scientific satellites, which were amo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exede
Viasat may refer to: *Viasat (American company) (founded 1986) *Viasat (Nordic television service) (founded 1991) * Danish 1st Division, officially Viasat Divisionen, second-highest football league in Denmark * 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 *Viasat Ticket, a defunct Scandinavian pay-per-view service See also *ViaSat-1, ViaSat-2 ViaSat-2 is a commercial communications satellite launched June 1, 2017 and went live late February 2018. It was advertised to be the world's highest capacity communications satellite with a throughput of 300 Gbit/s, succeeding HughesNet EchoSta ..., and ViaSat-3, satellites launched by the American company {{Disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ViaSat , satellites launched by the American company
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Viasat may refer to: *Viasat (American company) (founded 1986) * Viasat (Nordic television service) (founded 1991) * Danish 1st Division, officially Viasat Divisionen, second-highest football league in Denmark * 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 *Viasat Ticket, a defunct Scandinavian pay-per-view service See also * ViaSat-1, ViaSat-2, and ViaSat-3 ViaSat-3 is a global constellation of three geostationary Ka-band communications satellites, set to launch in 2023 by Viasat, Inc. The satellites are intended to provide broadband connectivity with speeds of 100-plus megabits per second to homes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spacecraft Launched In 2011
A spacecraft is a vehicle or machine designed to fly in outer space. A type of artificial satellite, spacecraft are used for a variety of purposes, including communications, Earth observation, meteorology, navigation, space colonization, planetary exploration, and transportation of humans and cargo. All spacecraft except single-stage-to-orbit vehicles cannot get into space on their own, and require a launch vehicle (carrier rocket). On a sub-orbital spaceflight, a space vehicle enters space and then returns to the surface without having gained sufficient energy or velocity to make a full Earth orbit. For orbital spaceflights, spacecraft enter closed orbits around the Earth or around other celestial bodies. Spacecraft used for human spaceflight carry people on board as crew or passengers from start or on orbit (space stations) only, whereas those used for robotic space missions operate either autonomously or telerobotically. Robotic spacecraft used to support scientific res ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
