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Tianlian
Tianlian (Simplified Chinese: 天链, Traditional Chinese: 天鏈, English: ''Sky Link'') also known as CTDRS, is a Chinese data relay communication satellite constellation. The constellation serves to relay data from ground stations to spacecraft and rockets, most significantly China's crewed spaceflight program. The system currently consists of seven satellites in two generations, with the first satellite being launched in 2008. Mission Tianlian is used to provide real-time communications between orbiting satellites and ground control stations. The Chinese tracking and data relay satellites were developed by the China Academy of Space Technology (CAST) and it is similar to the American Tracking and Data Relay Satellite System (TDRSS) in concept. The system is designed to support near-real-time communications between orbiting spacecraft and ground control, as well as complement the ground-based space tracking and telemetry stations and ships in tracking spacecraft. This is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tianlian II-03
Tianlian (Simplified Chinese: 天链, Traditional Chinese: 天鏈, English: ''Sky Link'') also known as CTDRS, is a Chinese data relay communication satellite constellation. The constellation serves to relay data from ground stations to spacecraft and rockets, most significantly China's crewed spaceflight program. The system currently consists of seven satellites in two generations, with the first satellite being launched in 2008. Mission Tianlian is used to provide real-time communications between orbiting satellites and ground control stations. The Chinese tracking and data relay satellites were developed by the China Academy of Space Technology (CAST) and it is similar to the American Tracking and Data Relay Satellite System (TDRSS) in concept. The system is designed to support near-real-time communications between orbiting spacecraft and ground control, as well as complement the ground-based space tracking and telemetry stations and ships in tracking spacecraft. This is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tianlian I-01
Tianlian ( Simplified Chinese: 天链, Traditional Chinese: 天鏈, English: ''Sky Link'') also known as CTDRS, is a Chinese data relay communication satellite constellation. The constellation serves to relay data from ground stations to spacecraft and rockets, most significantly China's crewed spaceflight program. The system currently consists of seven satellites in two generations, with the first satellite being launched in 2008. Mission Tianlian is used to provide real-time communications between orbiting satellites and ground control stations. The Chinese tracking and data relay satellites were developed by the China Academy of Space Technology (CAST) and it is similar to the American Tracking and Data Relay Satellite System (TDRSS) in concept. The system is designed to support near-real-time communications between orbiting spacecraft and ground control, as well as complement the ground-based space tracking and telemetry stations and ships in tracking spacecraft. This is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Long March 3C
The Long March 3C (), also known as the Changzheng 3C, CZ-3C and LM-3C, is a Chinese orbital launch vehicle. It is launched from Launch Complex 2 and 3 at the Xichang Satellite Launch Center (XSLC). A three-stage rocket with two strapon liquid rocket boosters, it is a member of the Long March 3 rocket family, and was derived from the Long March 3B. It was designed to fill a gap in payload capacities between the Long March 3A and 3B. Launch Statistics Launches It made its maiden flight on 25 April 2008, at 15:35 UTC. The payload for the first launch was the Tianlian I-01 data relay communications satellite. The second carried the Compass-G2 navigation satellite and was conducted on 14 April 2009. The third launch was made on 16 January 2010, with the Compass-G1 satellite. The fourth carrying the Compass-G3 navigation satellite was launched on 2 June 2010. On 1 October 2010, it successfully launched China's second lunar probe, Chang'e 2. An enhanced version, named Lon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shenzhou 7
Shenzhou 7 () was the third human spaceflight mission of the Chinese space program. The mission, which included the first Chinese extra-vehicular activity (EVA) carried out by crew members Zhai Zhigang and Liu Boming, marked the commencement of the second phase of the Chinese government's Project 921. The Shenzhou spacecraft carrying the three crew members was launched 25 September 2008, by a Long March 2F (CZ-2F) rocket which lifted off from the Jiuquan Satellite Launch Center at 21:10 CST. The mission lasted three days, after which the craft landed safely in Siziwang Banner in central Inner Mongolia on 28 September 2008, at 17:37 CST. The Shenzhou 7 EVA made the Chinese space program the third to have conducted an EVA. EVAs had previously been conducted by the space programs of the Soviet Union (later Russia) and the United States. Crew The crew for Shenzhou 7 was announced on 17 September 2008. Backup crew Of the back-up crew, only Chen Quan had not previously flown i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Long March 3B
The Long March 3B (, ''Chang Zheng 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 currently the second most powerful member of the Long March (rocket family), Long March rocket family after the Long March 5 and the heaviest of the Long March 3 rocket family, and is mainly used to place communications 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 82 successful launches, plus 2 failures and 2 partial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinese Deep Space Network
The Chinese Deep Space Network (CDSN) is a network of large antennas and communication facilities that are used for the interplanetary spacecraft missions of China. It is managed by the China Satellite Launch and Tracking Control Center General (CLTC), which reports to the People's Liberation Army Strategic Support Force Space Systems Department. They also deal with radio-astronomical and radar observations. The network was first needed for the lunar mission Chang'e 1, and since has been used to support subsequent missions to the Moon and Mars such as Chang'e 5, and Tianwen-1 missions. Similar deep space networks are run by the United States, Russia, European countries, Japan, and India. Introduction In principle, a Chinese deep space network has existed since 1993 with the commissioning of the Nanshan 25-meter telescope in the mountains south of Ürümqi. The 25-meter antenna of the Shanghai Astronomical Observatory was then not only able to participate in the Southern H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinese Space Program
The space program of the People's Republic of China is directed by the China National Space Administration (CNSA). China's space program has overseen the development and launch of ballistic missiles, thousands of artificial satellites, manned spaceflight, an indigenous space station, and has stated plans to explore the Moon, Mars, and the broader Solar System. The technological roots of the Chinese space program trace back to the 1950s, when, with the help of the newly-allied Soviet Union, China began development of its first ballistic missile and rocket programs in response to the perceived American (and, later, Soviet) threats.DF-1 . Driven by the successes of Sovi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xichang Satellite Launch Center
The Xichang Satellite Launch Center (XSLC), also known as the Xichang Space Center, is a spaceport of China. It is located in Zeyuan Town (), approximately northwest of Xichang, Liangshan Yi Autonomous Prefecture in Sichuan. The facility became operational in 1984 and is used to launch numerous civil, scientific, and military payloads annually. It is notable as the site of Sino-European space cooperation, with the launch of the first of two Double Star scientific satellites in December 2003. Chinese officials have indicated interest in conducting additional international satellite launches from XSLC. In 1996, a fatal accident occurred when the rocket carrying the Intelsat 708 satellite failed on launch from the Xichang Satellite Launch Center. Also, a 2007 test of an anti-satellite missile was launched from the center. History China's first crewed space program In order to support the Chinese Project 714 crewed space program in the 1960s, the construction of a new space ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inter-satellite Service
Inter-satellite service (also: inter-satellite radiocommunication service) is – according to ''Article 1.22'' of the International Telecommunication Union's (ITU) Radio Regulations (RR)ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.22, definition: ''inter-satellite service / inter-satellite radiocommunication service'' – defined as ''«A radiocommunication service providing links between artificial satellites.'' Classification In accordance with ''ITU Radio Regulations'' (article 1) variations of this ''radiocommunication service'' are classified as follows: * Fixed service (article 1.20) ** Fixed-satellite service (article 1.21) ** (article 1.22) ** Earth exploration-satellite service (article 1.51) *** Meteorological-satellite service (article 1.52) Satellites Inter-satellite radiocommunications satellites * U.S. Tracking and Data Relay Satellite * Artemis (satellite) * European Data Relay System * Indian Data Relay Satellite System * Luc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tracking And Data Relay Satellite System
The U.S. Tracking and Data Relay Satellite System (TDRSS) is a network of American communications satellites (each called a tracking and data relay satellite, TDRS) and ground stations used by NASA for space communications. The system was designed to replace an existing network of ground stations that had supported all of NASA's crewed flight missions. The prime design goal was to increase the time spacecraft were in communication with the ground and improve the amount of data that could be transferred. Many Tracking and Data Relay Satellites were launched in the 1980s and 1990s with the Space Shuttle and made use of the Inertial Upper Stage, a two-stage solid rocket booster developed for the shuttle. Other TDRS were launched by Atlas IIa and Atlas V rockets. The most recent generation of satellites provides ground reception rates of 6 Mbit/s in the S-band and 800 Mbit/s in the Ku- and Ka-bands. This is mainly used by the United States military. Origins To satisfy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Data Relay Satellite System
Indian Data Relay Satellite System or IDRSS is a planned Indian constellation of Inter-satellite communications satellites. It is planned to initially comprise two satellites, CMS-04 (formerly IDRSS-1) & IDRSS-2 in geostationary orbit. It will facilitate relay of information between various Indian spacecraft, in-flight launch vehicle monitoring and assist Indian Human Spaceflight Programme. Objectives A Data Relay Satellite System (DRSS) facilitates continuous real-time communication between Low Earth orbit bound spacecraft to the ground station as well as inter-satellite communication. Such a satellite in geostationary orbit can track a low altitude spacecraft up to almost half of its orbit. India operates one of world's largest remote sensing satellites systems. Visibility of these satellites is not more than 10-15 minutes in a day and sometimes even lower. The IDRSS satellites, one opposite to each half of earth in GEO, can see about 80 per cent of the area where Indian remo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Designator
The International Designator, also known as COSPAR ID, is an international identifier assigned to artificial objects in space. It consists of the launch year, a three-digit incrementing launch number of that year and up to a three-letter code representing the sequential identifier of a piece in a launch. In TLE format the first two digits of the year and the dash are dropped. For example1990-037Ais the Space Shuttle ''Discovery'' on mission STS-31, which carried the Hubble Space Telescope1990-037B into space. This launch was the 37th known successful launch worldwide in 1990. The designation system has been generally known as the COSPAR system, named for the Committee on Space Research (COSPAR) of the International Council for Science. COSPAR subsumed the first designation system, devised at Harvard University. That system used letters of the Greek alphabet to designate artificial satellites. This was based on the scientific naming convention for natural satellites. For exampl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
