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MEXSAT
The Mexican Satellite System, also known as MEXSAT, is a network of three satellites bought by the Mexican government's Ministry of Communications and Transportation. The three satellites are named Mexsat-1, Mexsat-2, and Mexsat-3. Subsequently, they have also been named Centenario, Morelos III and Bicentenario respectively. Mexsat-1 and Mexsat-2 are twin satellites for mobile communication devices and will operate in the electromagnetic frequencies of the L and Ku bands. Mexsat-3 will operate in the range of the extended C and Ku bands. Together these three satellites will form the whole system, operated by the Ministry of Communications and Transportation. The system is expected to meet the telecommunications needs of the whole country. Two control centres have been built in Hermosillo from which the new satellites will be operated. They were inaugurated by the then-president Felipe Calderón on 29 November 2012. History On 20 August 2009, the National Security Program of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morelos Satellite System
The ''Morelos'' satellites are a series of Mexican communications satellites. The first two operated between 1985 and 1998 and provided telephony, data, and television services over the territory of the Mexican Republic and adjacent areas. The third is now part of the MEXSAT constellation (sister ship of the MEXSAT-1 lost during launch) but carries the ''Morelos'' name. The original ''Morelos'' satellites were replaced by the Solidaridad Satellite System (''Solidaridad I'', launched 17 November 1993, and ''Solidaridad 2'', launched 17 October 1994) and, following privatisation, by the Satmex Satellite System. Satellites Morelos I Morelos I was Mexico's first communications satellite. It was built and put into orbit under a contract from the Secretariat of Communications and Transport (SCT), the federal ministry responsible for the nation's communications systems. ''Morelos I'', a Hughes Aircraft Corporation HS-376, was launched by the U.S. Space Shuttle ''Discovery'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boeing 702
Boeing 702 is a communication satellite bus family designed and manufactured by the Boeing Satellite Development Center, and flown from the late-1990s into the 2020s. It covers satellites massing from to with power outputs from 3 to 18 kW and can carry up to approximately 100 high-power transponders. The baseline Boeing 702 is compatible with several orbital launch systems, including Atlas V, Ariane 5, Delta IV, Falcon 9, Proton, and the Sea Launch-operated Zenit 3SL. Platform versions After the introduction of the original 702 in 1997, the platform has been continually updated. New members of the platform have been introduced through the years, which allowed the common systems and approaches to span the whole range of mass and power for geosynchronous orbit satellites. The family currently spans four different members: the 702HP for high-power applications, the 702HP-GEO for mobile-telephone services, the 702MP for medium-power requirements and the 702SP for small satell ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexsat-3
Mexsat-3, also known as Mexsat Bicentenario or simply Bicentenario, is the first of three Mexican satellites forming the MEXSAT telecommunications network, and is named to commemorate the bicentennial of the Independence of Mexico. It was launched on 19 December 2012 to serve the other two satellites in the network, Mexsat-1 and Mexsat-2, as a fixed satellite service. It was manufactured by the company Orbital Sciences Corporation and was launched from Kourou in French Guiana, and currently occupies the orbit 114.9° West. Objectives The Ministry of Communications and Transportation said in a statement that the new satellite would provide fixed broadband services for access to the Internet, digital high-quality satellite telephony, videoconferencing, remote medical care and education via television. It said that Bicentenario would provide services for emergency care "before, during and after emergencies". The satellite was equipped with instruments for transmitting and receivi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secretariat Of Communications And Transportation
The Secretariat of Infrastructure, Communications and Transportation (''Secretaría de Infraestructura, Comunicaciones y Transportes'', SICT) of Mexico is the national federal entity that regulates commercial road traffic and broadcasting. Its headquarters are in the Torre Libertad on Reforma in Mexico City but some aspects of the department still function at the old headquarters located at the intersection of Eje Central and Eje 4 Sur (Xola). The building is decorated with murals created by arranging small colored stones on the building's outer walls. Historical nomenclature The forerunner of the modern-day SCT was created in 1891 under President of Mexico, President Porfirio Díaz and was known as the Secretariat of Communications ''(Secretaría de Comunicaciones)''; its first incumbent as secretary was Manuel González Cosío. In 1920 it was renamed to the Secretariat of Communications and Public Works ''(Secretaría de Comunicaciones y Obras Públicas;'' "SCOP"). In 1959, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Satellite Operators
Communication (from la, communicare, meaning "to share" or "to be in relation with") is usually defined as the transmission of information. The term may also refer to the message communicated through such transmissions or the field of inquiry studying them. There are many disagreements about its precise definition. John Peters argues that the difficulty of defining communication emerges from the fact that communication is both a universal phenomenon and a specific discipline of institutional academic study. One definitional strategy involves limiting what can be included in the category of communication (for example, requiring a "conscious intent" to persuade). By this logic, one possible definition of communication is the act of developing meaning among entities or groups through the use of sufficiently mutually understood signs, symbols, and semiotic conventions. An important distinction is between verbal communication, which happens through the use of a language, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Guiana
French Guiana ( or ; french: link=no, Guyane ; gcr, label= French Guianese Creole, Lagwiyann ) is an overseas department/region and single territorial collectivity of France on the northern Atlantic coast of South America in the Guianas. It borders Brazil to the east and south and Suriname to the west. With a land area of , French Guiana is the second-largest region of France (more than one-seventh the size of Metropolitan France) and the largest outermost region within the European Union. It has a very low population density, with only . (Its population is less than that of Metropolitan France.) Half of its 294,436 inhabitants in 2022 lived in the metropolitan area of Cayenne, its capital. 98.9% of the land territory of French Guiana is covered by forests, a large part of which is primeval rainforest. The Guiana Amazonian Park, which is the largest national park in the European Union, covers 41% of French Guiana's territory. Since December 2015, both the regi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kourou
Kourou () is a commune in French Guiana, an overseas region and department of France in South America. Kourou is famous for being the location of the Guiana Space Centre, the main spaceport of France and the European Space Agency (ESA). It is an administrative district in French Guiana and the main town there. Geography Some northwest of the French Guianese capital Cayenne the Kourou River empties into the Atlantic Ocean. At the mouth of this river sits the town of Kourou, which is ringed by four hills: Carapa, Pariacabo, Café and Lombard, with the Singes and Condamine mountains not far behind. There are three lakes within the town's city limits: Lake Bois Diable (where one can take lessons in jetski and other aquatic sports), Lake Marie-Claire (the smallest and calmest), and Lake Bois Chaudat (the biggest of the three; also open to sport lovers, especially canoers and kayakers). Long white sand beaches and some rocky outcrops line the town's ocean coast, the riverbank ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orbital Sciences Corporation
Orbital Sciences Corporation (commonly referred to as Orbital) was an American company specializing in the design, manufacture, and launch of small- and medium- class space and launch vehicle systems for commercial, military and other government customers. In 2014, Orbital merged with Alliant Techsystems to create a new company called Orbital ATK, Inc., which in turn was purchased by Northrop Grumman in 2018. The remnants of the former Orbital Sciences Corporation today are a subsidiary of Northrop Grumman, known as Northrop Grumman Innovation Systems. Orbital was headquartered in Dulles, Virginia and publicly traded on the New York Stock Exchange with the ticker symbol ORB. Orbital's primary products were satellites and launch vehicles, including low Earth orbit (LEO), geosynchronous Earth orbit and planetary spacecraft for communications, remote sensing, scientific and defense missions; ground- and air-launched launch vehicles that delivered satellites into orbit; missile ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
STAR-2
The STAR-2 Bus is a fully redundant, flight-proven, spacecraft bus designed for geosynchronous missions. It is a satellite platform, designed and developed by Thomas van der Heyden for the Indonesian Cakrawarta satellite program in the early 1990s, now manufactured by Northrop Grumman Innovation Systems with an apogee kick motor to place a communications satellite into geostationary orbit, a thruster to provide the satellite with orbital station-keeping for a 15-year mission, and solar arrays to provide the satellite payload with 5 kW of electrical power. Advantages NGIS's GEOStar-2 bus design is unique within the satellite industry. NGIS's GEOStar-2 bus provides an affordable low-to-medium power satellite platform that is ideal for missions of this size. Rather than being a less efficient version of a larger, heavier product, NGIS's GEOStar-2 bus is designed specifically for the 1000 to 5550 watts payload class. Design The GEOStar-2 bus satellite is a modular, mass e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexican War Of Independence
The Mexican War of Independence ( es, Guerra de Independencia de México, links=no, 16 September 1810 – 27 September 1821) was an armed conflict and political process resulting in Mexico's independence from Spain. It was not a single, coherent event, but local and regional struggles that occurred within the same period, and can be considered a revolutionary civil war. Independence was not an inevitable outcome, but events in Spain directly impacted the outbreak of the armed insurgency in 1810 and its course until 1821. Napoleon Bonaparte's invasion of Spain in 1808 touched off a crisis of legitimacy of crown rule, since he had placed his brother Joseph on the Spanish throne after forcing the abdication of the Spanish monarch Charles IV. In Spain and many of its overseas possessions, the local response was to set up juntas ruling in the name of the Bourbon monarchy. Delegates in Spain and overseas territories met in Cádiz, Spain, still under Spanish control, as the Cor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlas V
Atlas V is an expendable launch system and the fifth major version in the Atlas launch vehicle family. It was originally designed by Lockheed Martin, now being operated by United Launch Alliance (ULA), a joint venture between Lockheed Martin and Boeing. Atlas V is also a major NASA launch vehicle. It is America's longest-serving active rocket. In August 2021, ULA announced that Atlas V would be retired, and all 29 remaining launches had been sold. , 19 launches remain. Each Atlas V launch vehicle consists of two main stages. The first stage is powered by a Russian RD-180 engine manufactured by Energomash and burning kerosene and liquid oxygen. The Centaur upper stage is powered by one or two American RL10 engine(s) manufactured by Aerojet Rocketdyne and burns liquid hydrogen and liquid oxygen. The Star 48 upper stage was used on the '' New Horizons'' mission as a third stage. Strap-on solid rocket boosters (SRBs) are used in most configurations. AJ-60A SRBs were u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Launch Alliance
United Launch Alliance (ULA), legally United Launch Alliance, LLC, is an American spacecraft launch service provider that manufactures and operates a number of rocket vehicles that are capable of launching spacecraft into orbits around Earth, and to other bodies in the Solar System and New Horizons, beyond. The company, which is a joint venture between Lockheed Martin Space and Boeing Defense, Space & Security, was formed in December 2006. Launch customers of the United Launch Alliance include the United States Department of Defense, Department of Defense (DoD), NASA, and other organizations. ULA provides launch services using expendable launch systems Delta IV Heavy and Atlas V, and until 2018 the medium-lift launch vehicle, medium-lift Delta II. The Atlas, Delta IV Heavy and the recently retired Delta IV launch systems have launched payloads including weather, telecommunications, and national security satellites, scientific probes and orbiters. ULA also launches commercial sat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
