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ChinaSat 22
ChinaSat () is the brand name of communications satellites operated by China Satellite Communications. History In 2007, a joint venture China Direct Broadcast Satellite was formed to run the brand ChinaSat. It was a joint venture of state-owned companies China Satellite Communications, China Orient Telecommunications Satellite and Sino Satellite Communications. The latter was controlled by China Aerospace Science and Technology Corporation (CASC). However, China Satellite Communications was changed from a direct subsidiary of the State-owned Assets Supervision and Administration Commission of the State Council (SASAC) to a direct subsidiary of CASC in 2009, the joint venture was dissolved and Sino Satellite Communications became a subsidiary of China Satellite Communications. The brand ChinaSat was previously operated by China Telecommunications Broadcast Satellite Corporation, which was owned by China's Ministry of Posts and Telecommunications. China Telecommunications ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
People's Republic Of China
China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after India, representing 17.4% of the world population. China spans the equivalent of five time zones and Borders of China, borders fourteen countries by land across an area of nearly , making it the list of countries and dependencies by area, third-largest country by land area. The country is divided into 33 Province-level divisions of China, province-level divisions: 22 provinces of China, provinces, 5 autonomous regions of China, autonomous regions, 4 direct-administered municipalities of China, municipalities, and 2 semi-autonomous special administrative regions. Beijing is the country's capital, while Shanghai is List of cities in China by population, its most populous city by urban area and largest financial center. Considered one of six ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China Association For Science And Technology
The China Association for Science and Technology (CAST; ) is a people's organization of Chinese scientists and engineers, which is composed of multiple national professional societies and hundreds of branches at various local and international levels. CAST was formed in September 1958 through the merger of the All-China Federation of Natural Science Societies and the All-China Association for Science Popularization. Its stated goal is to act as a link between the science and technology community and the Chinese Communist Party (CCP) and government. CAST is a constituent member of the Chinese People's Political Consultative Conference (CPPCC). Wan Gang is the current president of the national committee of CAST. He Junke serves as the Chinese Communist Party Committee Secretary for CAST. Technology transfer In December 2003, CAST established the ''Help Our Motherland through Elite Intellectual Resources from Overseas Program'' (HOME, also known as "Haizhi") in concert with t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Long March 3B/E
The Long March 3B (), also known as the CZ-3B and LM-3B, is a Chinese orbital launch vehicle. Introduced in 1996, it is launched from Launch Area 2 and 3 at the Xichang Satellite Launch Center in Sichuan. A three-stage rocket with four strap-on liquid rocket boosters, it is the heaviest variant of the Long March 3 rocket family, and is mainly used to place communications satellites and navigation satellites into geosynchronous orbits. An enhanced version, the Long March 3B/E or G2, was introduced in 2007 to increase the rocket's geostationary transfer orbit (GTO) cargo capacity and lift heavier geosynchronous orbit (GEO) communications satellites. The Long March 3B also served as the basis for the medium-capacity Long March 3C, which was first launched in 2008. , the Long March 3B, 3B/E and 3B/G5 have conducted 105 successful launches, plus 2 failures and 2 partial failures, accumulating a success rate of . It is the first Long March series rocket to accumulate 100 orbital lau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Traffic In Arms Regulations
International Traffic in Arms Regulations (ITAR) is a set of U.S. Department of State regulations that control the export of defense and military technologies to safeguard national security and further its foreign policy objectives. Overview The United States government has adopted two types of regulations to control exports of military-relevant items: ITAR, which cover weapons and defense articles specifically (such as missiles); and the Export Administration Regulations, which cover items that may have uses in defense articles (such as a radar component used in a certain missile). Defense-related articles and services on the United States Munitions List (USML) are covered by the ITAR, which implement the provisions of the Arms Export Control Act (AECA), and are described in Title 22 (Foreign Relations), Chapter I (Department of State), Subchapter M of the Code of Federal Regulations. The Department of State Directorate of Defense Trade Controls (DDTC) interprets and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Jamming
Radio jamming is the deliberate blocking of or interference with wireless communications.https://apps.fcc.gov/edocs_public/attachmatch/DA-12-347A1.pdf Enforcement Advisory No. 2012-02 FCC Enforcement Advisory Cell Jammers, GPS Jammers, and Other Jamming Devices Consumer Alert: Using or Importing Jammers is Illegal In some cases, jammers work by the transmission of radio signals that disrupt telecommunications by decreasing the signal-to-noise ratio. The concept can be used in wireless data networks to disrupt information flow. It is a common form of censorship in totalitarian countries, in order to prevent foreign radio stations in border areas from reaching the country. Jamming is usually distinguished from interference that can occur due to device malfunctions or other accidental circumstances. Devices that simply cause interference are regulated differently. Unintentional "jamming" occurs when an operator transmits on a busy frequency without first checking whether it is in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Spacebus Satellites
Satellite orders Spacebus-300 , - ! Satellite ! Country ! Operator ! Type ! Coverage ! Launch date (UTC) ! Rocket ! width="200pt", Changes ! Status , - , TDF 1 , France , TDF Group , Television broadcasting , 5 Ku-band , , Ariane 2 , , Retired , - , TDF 2 , France , TDF Group , Television broadcasting , 5 Ku-band , , Ariane 44L , , Retired , - , Tele-X , Sweden , SES Sirius , Communications , 5 Ku-band , , Ariane 2 , , Retired , - , TV-SAT 1 , Germany , Deutsche Bundespost , Television broadcasting , 5 Ku-band , , Ariane 2 , , Retired , - , TV-SAT 2 , Germany , Deutsche Bundespost , Television broadcasting , 5 Ku-band , , Ariane 44LP , , Active , - Spacebus-1000 , - ! Satellite ! Country ! Operator ! Type ! Coverage ! Launch date (UTC) ! Rocket ! width="200pt", Changes ! Status , - , Arabsat 1A , Saudi Arabia , Arabsat , Television broadcasting , 25 C-band, 2 S-band , , Ariane 3 , , Retired , - , Arabsat 1B , Saudi Arabia , Arabsat , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thales Alenia Space
Thales Alenia Space () is a joint venture between the French technology corporation Thales Group (67%) and Italian defense conglomerate Leonardo (company), Leonardo (33%). The company is headquartered in Cannes, France. It provides space-based systems, including satellites and ground segments, used for telecommunications, navigation, earth observation, space exploration and scientific purposes. The company is the second largest industrial participant in the International Space Station (ISS), having produced numerous pressurized modules for the European Space Agency (ESA) including the Cupola (ISS module), Cupola, the node modules Harmony (ISS module), Harmony and Tranquility (ISS module), Tranquility, and the structure of the Columbus (ISS module), Columbus laboratory. It is a key contributor to Galileo (satellite navigation), Galileo, a European Satellite navigation, global satellite navigation system, being responsible for the ground segment in particular. In 2021, the company ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Long March 3A
The Long March 3A (), also known as the Chang Zheng 3A, CZ-3A and LM-3A, is a Chinese orbital carrier rocket design. It is a 3-stage rocket, and is usually used to place communications satellites and Beidou navigation satellites into geosynchronous transfer orbits. It has formed the basis of the Long March 3B, which is a heavier version with four liquid booster rockets. Launches Long March 3A rockets have been launched from Launch Areas 2 and 3 at the Xichang Satellite Launch Center. List of launches Technical data LM-3A is a 3-stage launch vehicle developed on the basis of LM-3 and LM-2C. Its third stage is powered by cryogenic propellants: liquid hydrogen and liquid oxygen Liquid oxygen, sometimes abbreviated as LOX or LOXygen, is a clear cyan liquid form of dioxygen . It was used as the oxidizer in the first liquid-fueled rocket invented in 1926 by Robert H. Goddard, an application which is ongoing. Physical .... It is dedicated for launching spacecraft in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geosynchronous Orbit
A geosynchronous orbit (sometimes abbreviated GSO) is an Earth-centered orbit with an orbital period that matches Earth's rotation on its axis, 23 hours, 56 minutes, and 4 seconds (one sidereal day). The synchronization of rotation and orbital period means that, for an observer on Earth's surface, an object in geosynchronous orbit returns to exactly the same position in the sky after a period of one sidereal day. Over the course of a day, the object's position in the sky may remain still or trace out a path, typically in a figure-8 form, whose precise characteristics depend on the orbit's inclination and eccentricity. A circular geosynchronous orbit has a constant altitude of . A special case of geosynchronous orbit is the geostationary orbit (often abbreviated ''GEO''), which is a circular geosynchronous orbit in Earth's equatorial plane with both inclination and eccentricity equal to 0. A satellite in a geostationary orbit remains in the same position in the sky to observers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eutelsat 8 West D
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 the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
