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Base Earth Station
Base earth station (also: ''base earth radio station'') is – according to ''article 1.72'' of the International Telecommunication Union´s (ITU) ITU Radio Regulations (RR)ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.72, definition: ''base earth station / base earth radio station'' – defined as «''An earth station in the fixed-satellite service or, in some cases, in the land mobile-satellite service, located at a specified fixed point or within a specified area on land to provide a feeder link for the land mobile-satellite service''.» Each ''station'' shall be classified by the ''service'' in which it operates permanently or temporarily. ;See also: Classification In accordance with ''ITU Radio Regulations'' (article 1) this type of ''radio station'' might be classified as follows: Earth station (article 1.63) * Mobile earth station (article 1.68) of the mobile-satellite service (article 1.25) * Land earth station (article 1.70) of the fixed- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mobile-satellite Service
Mobile-satellite service (MSS, or mobile-satellite radiocommunication service) is – according to Article 1.25 of the International Telecommunication Union's Radio Regulations – "A radiocommunication service * between mobile earth stations and one or more space stations, or between space stations used by this service; or * between mobile earth stations by means of one or more space stations. This service may also include feeder links necessary for its operation." Details Most commercial voice and some data mobile satellite services are provided by systems operating in the L-band by Iridium, Inmarsat, Globalstar and Thuraya. The L-band spectrum allocated for MSS is between 1.5 and 2.5 GHz, with the upper portion often referred to as the S-band. Constellations of low earth orbiting (LEO) satellites are used by Iridium (66 satellites) and Globalstar (48 satellites). Inmarsat and Thuraya currently use 4 (i4) and 2 geostationary satellites respectively, their L-band service ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeronautical Mobile-satellite Service
Aeronautical mobile-satellite service (short: AMSS; | also: ''aeronautical mobile-satellite radiocommunication service'') is – according to ''Article 1.35'' of the International Telecommunication Union's (ITU) Radio Regulations (RR) – defined as ''«A mobile-satellite service in which mobile earth stations are located on board aircraft; survival craft stations and emergency position-indicating radiobeacon stations may also participate in this service. ''. » ;See also: Classification This ''radiocommunication service'' is classified in accordance with ''ITU Radio Regulations'' (article 1) as follows: Mobile service (article 1.24) *Aeronautical mobile service (article 1.32) **Aeronautical mobile-satellite service *** Aeronautical mobile-satellite (R)° service (article 1.36) *** Aeronautical mobile-satellite (OR)°° service (article 1.37) (R)° = abbreviation to route flights (route)(OR)°° = abbreviation to flights others than on routes (off-route) Frequenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeronautical Earth Station
Aeronautical earth station (also: ''aeronautical earth radio station'') is – according to ''Article 1.82'' of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR)ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.82, definition: ''aeronautical earth station / aeronautical earth radio station'' – defined as «''An earth station in the fixed-satellite service, or, in some cases, in the aeronautical mobile-satellite service, located at a specified fixed point on land to provide a feeder link for the aeronautical mobile-satellite service''.» Each ''station'' shall be classified by the ''service'' in which it operates permanently or temporarily. ;See also: Classification In accordance with ''ITU Radio Regulations'' (article 1) this type of ''radio station'' might be classified as follows: Earth station (article 1.63) *Mobile earth station (article 1.68) of the mobile-satellite service (article 1.25) * Land earth station (article ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Earth Station
Ship earth station (also: ship earth radio station) is – according to ''Article 1.78'' of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR)ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.78, definition: ''ship earth station / ship earth radio station'' – defined as «''A mobile earth station in the maritime mobile-satellite service located on board ship''.» The ITU regulation requires that each radio station be classified according to the ''service'' in which it operates permanently or temporarily. Ship earth stations can provide a variety of radiocommunication services including crew calling. Classification In accordance with ''ITU Radio Regulations'' (article 1) this type of ''radio station'' might be classified as follows: Earth station (article 1.63) *Mobile earth station (article 1.68) of the mobile-satellite service (article 1.25) * Land earth station (article 1.70) of the fixed-satellite service (article 1.21) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coast Earth Station
Coast earth station, also called the coast earth radio station is – according to ''article 1.76'' of the International Telecommunication Union´s (ITU) ITU Radio Regulations (RR)ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.76, definition: '' coast earth station / coast earth radio station'' – defined as «''An earth station in the fixed-satellite service or, in some cases, in the maritime mobile-satellite service, located at a specified fixed point on land to provide a feeder link for the maritime mobile-satellite service''.» Each ''radio station'' shall be classified by the ''service'' in which it operates permanently or temporarily. Classification In accordance with ''ITU Radio Regulations'' (article 1) this type of ''radio station'' might be classified as follows: Earth station (article 1.63) * Mobile earth station (article 1.68) of the mobile-satellite service (article 1.25) * Land earth station (article 1.70) of the fixed-satellite servic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Mobile Earth Station
Land mobile earth station (also: ''land mobile earth radio station'') is – according to ''Article 1.74'' of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR)ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.74, definition: ''land mobile earth station / land mobile earth radio station'' – defined as «''A mobile earth station in the land mobile-satellite service capable of surface movement within the geographical limits of a country or continent''.» ;See also: Classification In accordance with ''ITU Radio Regulations'' (article 1) this type of ''radio station'' might be classified as follows: Earth station (article 1.63) * Mobile earth station (article 1.68) of the mobile-satellite service (article 1.25) * Land earth station (article 1.70) of the fixed-satellite service (article 1.21) or mobile-satellite service **Land mobile earth station * Base earth station (article 1.72) of the fixed-satellite service * Coast earth s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Earth Station
A land earth station (also: land earth radio station) is – according to ''Article 1.70'' of the International Telecommunication Union´s (ITU) ITU Radio Regulations (RR)ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.70, definition: ''land earth station / land earth radio station'' – defined as ''«An earth station in the fixed-satellite service or, in some cases, in the mobile-satellite service, located at a specified fixed point or within a specified area on land to provide a feeder link for the mobile-satellite service.''» Each ''station'' shall be classified by the ''service'' in which it operates permanently or temporarily. ;See also: Classification In accordance with ''ITU Radio Regulations'' (article 1) this type of ''radio station'' might be classified as follows: Earth station (article 1.63) * Mobile earth station (article 1.68) of the mobile-satellite service (article 1.25) *Land earth station ** Land mobile earth station (article 1.7 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mobile Earth Station
Mobile earth station (also: ''mobile earth radio station'') is – according to ''Article 1.68'' of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR)ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.68, definition: ''mobile earth station / mobile earth radio station'' – defined as «''An earth station in the mobile-satellite service intended to be used while in motion or during halts at unspecified points''.» Each ''station'' shall be classified by the ''service'' in which it operates permanently or temporarily. ;See also: Classification In accordance with ''ITU Radio Regulations'' (article 1) this type of ''radio station'' might be classified as follows: Earth station (article 1.63) *Mobile earth station *Land earth station (article 1.70) of the fixed-satellite service (article 1.21) or mobile-satellite service **Land mobile earth station (article 1.74) of the land mobile-satellite service (article 1.27) *Base earth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Telecommunication Union
The International Telecommunication Union is a specialized agency of the United Nations responsible for many matters related to information and communication technologies. It was established on 17 May 1865 as the International Telegraph Union, making it the oldest UN agency. The ITU was initially aimed at helping connect telegraphic networks between countries, with its mandate consistently broadening with the advent of new communications technologies; it adopted its current name in 1932 to reflect its expanded responsibilities over radio and the telephone. On 15 November 1947, the ITU entered into an agreement with the newly created United Nations to become a specialized agency within the UN system, which formally entered into force on 1 January 1949. The ITU promotes the shared global use of the radio spectrum, facilitates international cooperation in assigning satellite orbits, assists in developing and coordinating worldwide technical standards, and works to improve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earth Station
A ground station, Earth station, or Earth terminal is a terrestrial radio station designed for extraplanetary telecommunication with spacecraft (constituting part of the ground segment of the spacecraft system), or reception of radio waves from astronomical radio sources. Ground stations may be located either on the surface of the Earth, or in its atmosphere. Earth stations communicate with spacecraft by transmitting and receiving radio waves in the super high frequency (SHF) or extremely high frequency (EHF) bands (e.g. microwaves). When a ground station successfully transmits radio waves to a spacecraft (or vice versa), it establishes a telecommunications link. A principal telecommunications device of the ground station is the parabolic antenna. Ground stations may have either a fixed or itinerant position. Article 1 § III of the International Telecommunication Union (ITU) Radio Regulations describes various types of stationary and mobile ground stations, and thei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feeder Link
A feeder link is – according to ''Article 1.115'' of the International Telecommunication Union´s (ITU) ITU Radio Regulations (RR)ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.115, definition: ''feeder link'' – defined as: Each ''station'' shall be classified by the ''service'' in which it operates permanently or temporarily. See also * Radio station Radio broadcasting is transmission of audio (sound), sometimes with related metadata, by radio waves to radio receivers belonging to a public audience. In terrestrial radio broadcasting the radio waves are broadcast by a land-based radi ... * Radiocommunication service References International Telecommunication Union (ITU) {{Radio station ITU Radio stations and systems ITU ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
