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OmniSTAR
OmniSTAR is a satellite-based augmentation system ( SBAS) service provider. OmniSTAR correction signals are proprietary, and a subscription must be bought from the OmniSTAR corporation to receive a subscription authorization. OmniSTAR uses geostationary satellites in eight regions covering most of the landmass of each inhabited continent on Earth: # MSV-E, MSV-C, MSV-W (North America) # AMSAT (Central and South America and the Caribbean) # AORWH (Atlantic Ocean East Coast) # AOREH (Atlantic Ocean Europe/Africa) # EUSAT (Europe and Africa) # IORHN (Indian Ocean Region) # APSAT (Asia, Australasia, Western Pacific, Eastern Africa, Southern Africa) # OCSAT (Australia, New Zealand) MSV service is provided by the MSAT AMSC-1 and MSAT-M1 satellites, operated by a company called Mobile Satellite Ventures. To access the OmniSTAR solution the user must have an OmniSTAR-capable receiver. OmniSTAR capable receivers are available from a number of GPS manufacturers such as Autofarm, G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geostationary Satellites
A geostationary orbit, also referred to as a geosynchronous equatorial orbit''Geostationary orbit'' and ''Geosynchronous (equatorial) orbit'' are used somewhat interchangeably in sources. (GEO), is a circular geosynchronous orbit in altitude above Earth's equator ( in radius from Earth's center) and following the direction of Earth's rotation. An object in such an orbit has an orbital period equal to Earth's rotational period, one sidereal day, and so to ground observers it appears motionless, in a fixed position in the sky. The concept of a geostationary orbit was popularised by the science fiction writer Arthur C. Clarke in the 1940s as a way to revolutionise telecommunications, and the first satellite to be placed in this kind of orbit was launched in 1963. Communications satellites are often placed in a geostationary orbit so that Earth-based satellite antennas do not have to rotate to track them but can be pointed permanently at the position in the sky where the sate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GNSS Augmentation
Augmentation of a global navigation satellite system (GNSS) is a method of improving the navigation system's attributes, such as precision, reliability, and availability, through the integration of external information into the calculation process. There are many such systems in place, and they are generally named or described based on how the GNSS sensor receives the external information. Some systems transmit additional information about sources of error (such as clock drift, ephemeris, or ionospheric delay), others provide direct measurements of how much the signal was off in the past, while a third group provides additional vehicle information to be integrated in the calculation process. Satellite-based augmentation system Satellite-based augmentation systems (SBAS) support wide-area or regional augmentation through the use of additional satellite-broadcast messages. Using measurements from the ground stations, correction messages are created and sent to one or more satell ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MSAT
MSAT, short for ''Mobile Satellite'', is a satellite-based mobile telephony service developed by the National Research Council of Canada. Supported by a number of companies in the US and Canada, MSAT hosts a number of services, including the broadcast of CDGPS signals. The MSAT satellites were built by Hughes (now owned by Boeing) with a 3 kilowatt solar array power capacity and sufficient fuel for a design life of twelve years. TMI Communications of Canada referred to its MSAT satellite as MSAT-1, while American Mobile Satellite Consortium (now Ligado Networks) referred to its MSAT as AMSC-1, with each satellite providing backup for the other. History * April 7, 1995 - MSAT-2 (a.k.a. AMSC-1, COSPAR 1995-019A, SATCAT 23553) launched from Cape Canaveral, Launch Complex 36, Pad A, aboard Atlas IIA * May 1995 - testing causes overheating and damage to one of eight hybrid matrix amplifier output ports aboard MSAT-2 * April 20, 1996 - MSAT-1 (sometimes AMSC 2, COSPAR 1996-022A, SATC ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mobile Satellite Ventures
SkyTerra (SKYT), formerly Mobile Satellite Ventures (MSV or MSVLP), was a Reston, Virginia company that developed telecommunications systems that integrate satellite and terrestrial radio communication technologies into one system. In March 2010, the company was acquired by Harbinger Capital Partners and under the leadership of CEO Sanjiv Ahuja became part of a new company called LightSquared. The company placed its first satellite, SkyTerra-1, in orbit on November 14, 2010. LightSquared has since then went bankrupt and emerged from bankruptcy as Ligado Networks. History The Corporation was founded in 1988 as American Mobile Satellite Corporation (AMSC), a consortium of several organizations originally dedicated to satellite broadcasting of telephone, fax, and data signals. Its acquisition of ARDIS was completed on March 31, 1998. On April 24, 2000, the company changed its name to Motient Corporation, with its stock traded on the NASDAQ National Market under the symbol "MTNT". M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemisphere GPS
Hemisphere GNSS designs and manufactures precision global positioning system and global navigation satellite system products and technology for positioning, heading, guidance, navigation, machine control, and L-band correction service applications. The company’s products and technology are used in agricultural, marine, surveying, GIS mapping, and machine control markets. Hemisphere GNSS is headquartered in Scottsdale, Arizona; with product development facilities in Hiawatha, Kansas, Calgary, Canada, and Winnipeg, Canada Winnipeg () is the capital and largest city of the province of Manitoba in Canada. It is centred on the confluence of the Red and Assiniboine rivers, near the longitudinal centre of North America. , Winnipeg had a city population of 749,6 .... Hemisphere GNSS is a privately held company that was created in 2013 when Hemisphere GPS was purchased by Beijing UniStrong Science & Technology, with Hemisphere GPS becoming AgJunction. Atlas is a satellite-b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
