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Superbird-C2
Superbird-C2, known as Superbird-7 before launch, is a geostationary orbit, geostationary communications satellite operated by JSAT Corporation and designed and manufactured by Mitsubishi Electric on the DS2000 satellite bus. It had a launch weight of , a 15-year design life and was the first commercial communications satellite built in Japan. Its payload is composed of 28 Ku band, Ku-band Transponder (satellite communications), transponders with a total bandwidth of 828 Hertz, MHz. It was originally ordered by SKY Perfect JSAT, Space Communications Corporation (SCC), but it was later merged and absorbed by JSAT Corporation. By the time of the actual launch it was a fully used Superbird-C2 as a replacement for Superbird-C to provide communications services to Japan, East Asia and the Pacific Ocean. History In April 2005, Space Communications Corporation (SCC) issued an Request for proposal (RFP) for Superbird-7, a spacecraft destined to replace the aging Superbird-C. On 28 Ju ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superbird-B3
Superbird-B3, known as Superbird-8 before launch, and DSN-1 (Kirameki-1) for its military payload, is a geostationary communications satellite operated by SKY Perfect JSAT Group and designed and manufactured by Mitsubishi Electric on the DS2000 satellite bus. It is intended to replace Superbird-B2 on the 162° East, offering Ku-band and Ka-band communication services to the Japanese market. It will also serve as one of the two planned X-band military satellites of the DSN network, in this role, it will be known as DSN-1 (Kirameki-1). Originally intended to be launched by an Ariane 5 ECA in the second half of fiscal year 2015, a mishap during transport to the launch site in March 2016 meant that it would be delayed up to two years. History JSAT along NEC, NTT Com and Maeda Corporation formed a joint venture called DSN Corporation. On 15 January 2013, DSN Corporation announced that it had closed a contract with the Ministry of Defense to execute the "Program to Upgrade and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superbird-A2
Superbird-A2, known as Superbird-6 before launch, was a geostationary communications satellite ordered and operated by Space Communications Corporation (SCC) that was designed and manufactured by Hughes (now Boeing) on the BSS-601 satellite bus. It had a mixed Ku-band and Ka-band payload and was expected replace Superbird-A at the position at 158° East longitude. It was expected to provided television signals and business communications services throughout Japan, South Asia, East Asia, and Hawaii. While the launch was within the margins specified by the satellite manufacturer, the trajectory analysis had been inexact and the satellite suffered severe life and power degradation. It tried to use a supersynchronous transfer strategy, but Boeing had failed to take into consideration the effect of the Moon. Thus, the lowest part of the orbit dropped too fast and much propellant had to be spent on a fast transit to geosynchronous orbit. Additionally, the solar panels suffered dama ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DS2000
The DS2000 is a geostationary communications satellite bus designed and manufactured by Mitsubishi Electric of Japan. Designed to carry payloads between and , with power requirements of up to 15 kW. It is compatible with Ariane 5, Proton-M, Zenit-3SL, Atlas V, Falcon 9 and H-IIA. According to Moog-ISP, the DS2000 platform uses its bipropellant thrusters. List of satellites Satellites using the DS2000 platform. See also * A2100 – Similar satellite bus made by Lockheed Martin Space Systems and popular with Japanese satellite operators * SSL 1300 – Another comparable satellite bus used by Japanese satellite operators and made by SSL References {{Reflist, 30em, refs= {{cite web , url=http://www.astronautix.com/d/ds2000.html , archive-url=https://web.archive.org/web/20160820094902/http://www.astronautix.com/d/ds2000.html , url-status=dead , archive-date=August 20, 2016 , last=Wade , first=Mark , title=DS2000 , access-date=2016-07-29 {{cite web , last1=Krebs , first1= ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AMC-21
AMC-21, or GE-21, is an American communications satellite operated by SES S.A., formerly SES World Skies and SES Americom. It was launched in August 2008 and is expected to remain in service for approximately 15 years. It is currently located at 125° West longitude. Spacecraft and mission design AMC-21 is based on a STAR-2 satellite bus that provides 4.4 kilowatts of power for the communications payload. The platform will support a 15-year on-orbit mission life. It carries 24 Ku-band transponders at 36 MHz, which will be used to broadcast television signals to Canada, United States, Mexico, the Caribbean, and Central America. Manufacture Thales Alenia Space was the prime contractor for AMC-21, and provided the satellite's communications payload. The STAR-2 bus was subcontracted to Orbital Sciences Corporation, as were integration and testing of the satellite. As prime contractor, Thales Alenia Space delivered the completed satellite to SES Americom. Launch AMC-21 was lau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superbird-C
Superbird-C, also known as Superbird-3 or Superbird-A3, was a geostationary communications satellite ordered and operated by Space Communications Corporation (SCC) that was designed and manufactured by Hughes Space and Communications Company (now Boeing Satellite Systems) on the HS-601 satellite bus. It has a pure Ku-band payload and was used fill the position at 144° East longitude. It provided television signals and business communications services throughout Japan, South Asia, East Asia, and Hawaii. Satellite description The spacecraft was designed and manufactured by then Hughes Space and Communications Company (now Boeing Satellite Development Center) on the HS-601 satellite bus. It had a launch mass of , a dry mass of and a 13-year design life. When stowed for launch, it measured . It had two wings with four solar panels each, that generated 4.5 kW at the end of its design life. When fully deployed, the solar panels spanned , with its antennas in fully extended ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SKY PerfecTV!
is a direct broadcast satellite (DBS) service that provides satellite television, audio programming and interactive television services to households in Japan, owned by parent company SKY Perfect JSAT Corporation The SKY Perfect JSAT Group is a Japanese corporate group that claims to be Asia's largest satellite communication and multi-channel pay TV company. It owns the SKY PerfecTV! satellite broadcasting service and the SKY Perfect Well Think content s .... SKY PerfecTV! is also a direct broadcast satellite (DBS) service. While SKY PerfecTV! Premium Service use DVB-S and DVB-S2, SKY PerfecTV! Basic Service use ISDB-S. See also * References External links * {{DEFAULTSORT:Sky PerfecTV! Direct broadcast satellite services Television networks in Japan Television channels and stations established in 1994 Entertainment companies of Japan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panasonic Avionics Corporation
Panasonic Avionics Corporation (PAC) designs, engineers, manufactures, sells and installs customized in-flight entertainment and communications devices to airlines worldwide. It is a subsidiary of Panasonic Corporation of North America, the principal North American subsidiary of Panasonic Corporation. Panasonic Avionics Corporation was founded in 1979 as Matsushita Avionics Systems Corporation and changed its name in 2005. It is headquartered in Irvine, California and has major business functions in Bothell, WA. Clients PAC is a supplier of in-flight entertainment equipment, including music, video on demand (movies and television shows), in-flight shopping, phone service, email, video games, and GPS flight location display. PAC supplies equipment to Boeing, Airbus and Bombardier. Competitors in the IFE market include Thales Group, Rockwell Collins, Safran/Zodiac In-Flight Innovations and LiveTV. In late 2009, Lufthansa announced that starting mid-2010 they will re-launch their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Panels On Spacecraft
Spacecraft operating in the inner Solar System usually rely on the use of power electronics-managed photovoltaic solar panels to derive electricity from sunlight. Outside the orbit of Jupiter, solar radiation is too weak to produce sufficient power within current solar technology and spacecraft mass limitations, so radioisotope thermoelectric generators (RTGs) are instead used as a power source.NASA JPL Publication: Basics of Space Flight, Chapter 11. Typical Onboard Systems, Electrical Power Supply and Distribution Subsystems, History The first practical silicon-based solar cells were introduced by Bell Labs in April 1954. They were initially about 6% efficient, but improvements began to raise this number almost immediately. Bell had been interested in the idea as a system to provide power at remote telephone repeater stations, but the cost of the devices was far too high to be practical in this role. Aside from small experimental kits and uses, the cells remained largely unus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ariane 5 ECA
Ariane 5 is a European heavy-lift space launch vehicle developed and operated by Arianespace for the European Space Agency (ESA). It is launched from the Centre Spatial Guyanais (CSG) in French Guiana. It has been used to deliver payloads into geostationary transfer orbit (GTO) or low Earth orbit (LEO). The launch vehicle had a streak of 82 consecutive successful launches between 9 April 2003 and 12 December 2017. Since 2014, Ariane 6, a direct successor system, is in development. The system was designed as an expendable launch system by the ''Centre national d'études spatiales'' (CNES), the French government's space agency, in cooperation with various European partners. Despite not being a direct derivative of its predecessor launch vehicle program, it is classified as part of the Ariane rocket family. ArianeGroup is the prime contractor for the manufacturing of the vehicles, leading a multi-country consortium of other European contractors. Ariane 5 was originally intended t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SKY Perfect JSAT
The SKY Perfect JSAT Group is a Japanese corporate group that claims to be Asia's largest satellite communication and multi-channel pay TV company. It owns the SKY PerfecTV! satellite broadcasting service and the SKY Perfect Well Think content studio, among other businesses. () is the holding company for the group, and holds 100% of the shares of , the group's main operating company. History JSAT The space and satellite business of the group dates to 1985, when its three predecessor companies were formed: Japan Communications Satellite Company (JCSC), Space Communications Corporation (SCC) and Satellite Japan Corporation (SJC). JCSAT-1, Japan's first private-sector communications satellite, was launched in 1989. JCSC and SJC merged in 1993, becoming Japan Satellite Systems, which changed its name to JSAT Corporation in 2000. JSAT was listed on the Tokyo Stock Exchange in the same year. SCC was acquired by the Sky Perfect JSAT Group in 2008. Sky PerfecTV The pay TV business ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transponder (satellite Communications)
A communications satellite's transponder is the series of interconnected units that form a communications channel between the receiving and the transmitting antennas. It is mainly used in satellite communication to transfer the received signals. A transponder is typically composed of: * an input band-limiting device (an input band-pass filter), * an input low-noise amplifier (LNA), designed to amplify the signals received from the Earth station (normally very weak, because of the large distances involved), * a frequency translator (normally composed of an oscillator and a frequency mixer) used to convert the frequency of the received signal to the frequency required for the transmitted signal, * an output band-pass filter, * a power amplifier (this can be a traveling-wave tube or a solid-state amplifier). Most communication satellites are radio relay stations in orbit and carry dozens of transponders, each with a bandwidth of tens of megahertz. Most transponders operate on a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
