|
XTAR
XTAR, LLC is a US-based company founded in 2001 for the purposes of commercializing the capacity and services on HISDESAT’s governmental satellite systems, which are purpose-built to meet the needs of the Kingdom of Spain. XTAR provides military satellite communications (MILSATCOM) capacity and services in X-, mil-Ka, and UHF-frequency bands. It also provides all-weather, high-resolution .X-band synthetic aperture radar (SAR) imaging/earth observation services to the US Department of Defense, NATO Allies, and partner nations as well. Roles: * HISDESAT has a Public-Private Partnership with the Spanish Ministry of Defense, and thus acquires and operates the satellites, and provides the services required by them. * Together, XTAR and Hisdesat provide the capacity unused by the Spanish Ministry of Defense to other NATO Allies and partner nations. Mission Founded in 2001, U.S.-based XTAR was the world's first commercial satellite operator to provide services to government end-u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SSL 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 S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hisdesat
Hisdesat (, 'Hisdesat Strategic Services') is a Spanish company created in 2001 by Hispasat (43%), Ingeniería y Servicios Aeroespaciales (30%), EADS CASA (15%, now Airbus), Indra Sistemas (7%) and SENER (5%) with initial investment of 415 million euros. Satellites Satellites: * Spainsat, secure communications, GEO * XTAR-EUR, secure communications, GEO * Paz, Earth observation, SSO, synthetic-aperture radar (SAR), X-band The X band is the designation for a band of frequency, frequencies in the microwave radio region of the electromagnetic spectrum. In some cases, such as in communication engineering, the frequency range of the X band is set at approximately 7.0� ... * Spainsat NG I, secure communications, GEO * Spainsat NG II, secure communications, GEO Launched satellites Other sources: See also * Hispasat, another Spanish satellite operator References External links * {{Space program of Spain Communications satellite operators Direct broad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spainsat
Spainsat is a Spanish telecommunications satellite used for military and government communications. It allows telecommunications the different missions of the Spanish Armed forces abroad by providing coverage on a wide area of the world ranging from the United States and South America to the Middle East, including Africa and Europe. Overview The satellite belongs to Hisdesat (Spanish company participated by Hispasat (43%), Ingeniería y Servicios Aeroespaciales (30%), Airbus (15%), Indra Espacio (7%) and Sener (5%)), and its initial investment was 415 million euros. It was built by Space Systems Loral in California United States, with an expected useful life of at least 15 years. Its takeoff mass was about 3,700 kilograms. It is instrumented with several transponders in the X band and one in the K military band. It is situated on a geostationary orbit at 36,000 kilometres of altitude, 30 degrees west, over the Atlantic Ocean. The satellite provides coverage to humanitarian, sec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Communication Satellite Companies
This is a list of all companies that currently operate at least one commercial communication satellite or currently have one on order. Global Top 20 The World Teleport Association publishes lists of companies based on revenues from all customized communications sources and includes operators of teleports and satellite fleets. In order from largest to smallest, the Global Top 20 of 2021 were: # TesArc Space (USA) # SES (Luxembourg) # Intelsat S.A. (Luxembourg) # EchoStar Satellite Services (USA) # Hughes Network Systems (USA) # Eutelsat (France) # Arqiva (UK) #Telesat (Canada) # Speedcast (USA) # Telespazio S.p.A. (Italy) # Encompass Digital Media (USA) # Singtel Satellite (Singapore) # Hispasat (Spain) # Globecast (France) # Liquid Intelligent Technologies (South Africa) # Russian Satellite Communications Company (Russia) #Telstra (Australia) # MEASAT Global (Malaysia) # Thaicom (Thailand) # du (UAE) # Gazprom Space Systems (Russia) List Notes Referen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loral Space & Communications
Loral Space & Communications Inc. is a Delaware-domiciled satellite communications company headed by Michael B. Targoff. The company was formed in 1996 from the remnants of Loral Corporation when Loral divested its defense electronics and system integration businesses to Lockheed Martin for $9.1 billion. In 2006, Bernard L. Schwartz retired after leading the company for 34 years. Loral presently has an investment in Telesat Canada in partnership with the Public Sector Pension Investment Board of Canada, and merged into a new stock offering (TSAT) on the Nasdaq in November, 2020. The company also participates in a number of international and domestic joint ventures, including an ownership stake in XTAR. History On March 20, 1998, Loral completed the acquisition of Orion Network Systems, Inc., through the exchange of common stock. The transaction was valued at approximately $479 million. In January 2002, Loral reached a settlement with the U.S. Government in a case relating to t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Satellite
A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a Transponder (satellite communications), transponder; it creates a communication channel between a source transmitter and a Radio receiver, receiver at different locations on Earth. Communications satellites are used for television, telephone, radio, internet, and military applications. Many communications satellites are in geostationary orbit above the equator, so that the satellite appears stationary at the same point in the sky; therefore the satellite dish antennas of ground stations can be aimed permanently at that spot and do not have to move to track the satellite. Others form satellite constellations in low Earth orbit, where antennas on the ground have to follow the position of the satellites and switch between satellites frequently. The radio waves used for telecommunications links travel by Line-of-sight propagation, line of sight and so are obstructe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Communications
Military communications or military signals involve all aspects of communications, or conveyance of information, by armed forces. Examples from '' Jane's Military Communications'' include text, audio, facsimile, tactical ground-based communications, naval signalling, terrestrial microwave, tropospheric scatter, satellite communications systems and equipment, surveillance and signal analysis, security, direction finding and jamming. IHS Jane'sbr>Military Communications Retrieved 2012-01-23. The most urgent purposes are to communicate information to commanders and orders from them. Military communications span from pre-history to the present. The earliest military communications were delivered by runners. Later, communications progressed to visual signals. For example, Naval ships would use flag signaling to communicate from ship to ship. These flags are a uniform set of easily identifiable nautical codes that would convey visual messages and codes between ships and fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Satellite Operators
Communication is commonly defined as the transmission of information. Its precise definition is disputed and there are disagreements about whether Intention, unintentional or failed transmissions are included and whether communication not only transmits semantics, meaning but also creates it. Models of communication are simplified overviews of its main components and their interactions. Many models include the idea that a source uses a code, coding system to express information in the form of a message. The message is sent through a Communication channel, channel to a receiver who has to decode it to understand it. The main field of inquiry investigating communication is called communication studies. A common way to classify communication is by whether information is exchanged between humans, members of other species, or non-living entities such as computers. For human communication, a central contrast is between Verbal communication, verbal and non-verbal communication. Verba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Defence (Spain)
The Ministry of Defence (MINISDEF) is the Spanish government departments, department of the Government of Spain responsible for planning, developing and carrying out the general guidelines of the Government about the defence policy and the managing of the military administration. It is the administrative and executive body of the Spanish Armed Forces. According to the Constitution of Spain, Constitution of 1978, the Monarchy of Spain, Monarch is the Commander in Chief of the Spanish military. He can declare war or conclude peace with authorization of the Cortes Generales, provided this act is countersigned by the Prime Minister of Spain, Prime Minister. The Ministry of Defence is headed by the Minister of Defence, a Council of Ministers (Spain), Cabinet member who depends directly from the Prime Minister of Spain, Prime Minister. Beneath the Ministry of Defence are five subordinate principal departments: the Armed Forces headed by the Chief of the Defence Staff (Spain), Chief of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hispasat
Hispasat is the operating company for a number of Spanish communications satellites that cover the Americas, Europe and North Africa from orbital positions 30.0° West and 61.0° West. It was formed in 1989 and its activities include provision of communication services in the commercial and government sectors (corporate networks, advanced Telecommunications service provider, telecommunications services, Telephone, telephony, Videotelephony, videoconferencing, etc.). Hispasat's fleet of satellites broadcast more than 1250 television channels and radio stations to more than 30 million homes, as well as providing services such as broadband to mobile telephones and landlines. The first Hispasat satellite sent into orbit was Hispasat 1A, which was launched on 11 September 1992 on board an Ariane 4 launch vehicle from the Guiana Space Centre, Centre Spatial Guyanais near Kourou in French Guiana. It was put into geostationary orbit at 30th meridian west, 30° West, which is the locatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NATO
The North Atlantic Treaty Organization (NATO ; , OTAN), also called the North Atlantic Alliance, is an intergovernmental organization, intergovernmental Transnationalism, transnational military alliance of 32 Member states of NATO, member states—30 European and 2 North American. Established in the aftermath of World War II, the organization implements the North Atlantic Treaty, signed in Washington, D.C., on 4 April 1949. NATO is a collective security system: its independent member states agree to defend each other against attacks by third parties. During the Cold War, NATO operated as a check on the threat posed by the Soviet Union. The alliance remained in place after the dissolution of the Soviet Union and the Warsaw Pact, and has been involved in military operations in the Balkans, the Middle East, South Asia, and Africa. The organization's motto is . The organization's strategic concepts include Deterrence theory, deterrence. NATO headquarters, NATO's main headquarter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hosted Payload
A hosted payload is a module attached to a commercial satellite with communications circuitry that operates independently of the main spacecraft but which shares the satellite's power supply and transponders. The concept has been also been referred to as "piggybacking" or "hitchhiking." Description Hosted payloads are used most often by government agencies seeking to have communications capability in orbit without having to pay the cost of building and launching an entire government-owned satellite. For example, within the United States, the Department of Defense has used three commercially hosted payloads since 2009. Using a hosted payload on a commercial satellite can reduce both the expense and time required to get communications and other technologies into space. However, because some government agencies desire to own and control entire satellite platforms, hosted payloads have not been widely accepted by government space planners, despite the fact that a large proportion of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
