News tagged with global positioning satellite
Forecasters keep eye on looming 'Solar Max'
The coming year will be an important one for space weather as the Sun pulls out of a trough of low activity and heads into a long-awaited and possibly destructive period of turbulence.
Dec 29, 2010 |
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GPS getting an upgrade - for $8 billion
(PhysOrg.com) -- GPS is getting an upgrade costing $8 billion (US), which aims to increase the system's accuracy, improve its reliability, and make the technology even more widespread.
May 25, 2010 |
4.6 / 5 (16) |
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Researchers show how far South American cities moved in quake
The massive magnitude 8.8 earthquake that struck the west coast of Chile last month moved the entire city of Concepcion at least 10 feet to the west, and shifted other parts of South America as far apart as ...
Space & Earth / Earth Sciences
Mar 08, 2010 |
4.5 / 5 (15) |
3
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US military developing geolocation system for underground
(PhysOrg.com) -- The US military is studying the feasibility of a system that could allow them to accurately navigate in enemy underground tunnels, an environment in which GPS does not work.
Technology / Hi Tech & Innovation
Mar 11, 2010 |
4.5 / 5 (13) |
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GPS System Could Start Failing by Next Year
(PhysOrg.com) -- A federal watchdog agency has warned the U.S. Congress that the GPS system could start failing in 2010 and beyond. Due to delays in launching replacement satellites and other circumstances, ...
May 20, 2009 |
3.9 / 5 (14) |
11
Biggest solar storm in years races toward Earth (Update 2)
The largest solar storm in five years was due to arrive on Earth early Thursday, promising to shake the globe's magnetic field while expanding the Northern Lights.
Space & Earth / Space Exploration
Mar 07, 2012 |
3.9 / 5 (14) |
4
China's satellite navigation system live
China's home-grown satellite navigation system launched a limited positioning service Tuesday, the official Xinhua news agency said, as the country seeks to break its dependence on foreign technology.
Space & Earth / Space Exploration
Dec 27, 2011 |
4.6 / 5 (9) |
5
Glitch shows how much US military relies on GPS
A problem that rendered as many as 10,000 U.S. military GPS receivers useless for days is a warning to safeguard a system that enemies would love to disrupt, a defense expert says.
Jun 01, 2010 |
4.4 / 5 (9) |
7
EU Galileo satnav system to begin operations in 2014
The EU's much-delayed Galileo sat-nav network will begin operation in 2014, the European Commission said Thursday as it awarded key contracts to Germany's OHB System and France's Arianespace.
Jan 07, 2010 |
5 / 5 (7) |
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Japan launches satellite for better GPS coverage (Update)
Japan on Saturday launched a rocket carrying a satellite intended to improve global positioning systems.
Sep 11, 2010 |
4.9 / 5 (7) |
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Air Force rebuts gov't auditor concerns about GPS
(AP) -- A government report raising questions about the future reliability of the Global Positioning System satellite network is "overly pessimistic," Air Force commanders said Friday.
Sep 24, 2010 |
4.8 / 5 (6) |
7
Europe defends 'stupid' Galileo satellite
Europe stood by its much-delayed and over-budget Galileo satellite navigation system on Tuesday despite a rising price tag and a contractor's description of the project as "stupid." ...
Space & Earth / Space Exploration
Jan 18, 2011 |
4.8 / 5 (6) |
6
Huge stakes riding on maiden Soyuz launch from Kourou
Prestige and a multi-billion-dollar gamble in satellite navigation will be riding on a Soyuz rocket next Thursday when the Soviet-era workhorse launches from Europe's space base in South America.
Space & Earth / Space Exploration
Oct 16, 2011 |
5 / 5 (5) |
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Russia blames scientists for rocket crashes
Russia's chief prosecutor on Tuesday blamed a recent spate of disasters threatening the future of the International Space Station (ISS) on negligence by the country's underpaid rocket scientists.
Space & Earth / Space Exploration
Oct 18, 2011 |
4.8 / 5 (5) |
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China launches orbiter for navigation system: state media
China launched an orbiter into space early Sunday, the latest stage in the development of its own satellite navigation system, state media said.
Space & Earth / Space Exploration
Jan 17, 2010 |
3.8 / 5 (6) |
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Global Positioning System
The Global Positioning System (GPS) is a global navigation satellite system (GNSS) developed by the United States Department of Defense and managed by the United States Air Force 50th Space Wing. It is the only fully functional GNSS in the world, can be used freely by anyone, anywhere, and is often used by civilians for navigation purposes. It uses a constellation of between 24 and 32 medium Earth orbit satellites that transmit precise radiowave signals, which allow GPS receivers to determine their current location, the time, and their velocity. Its official name is NAVSTAR GPS. Although NAVSTAR is not an acronym, a few backronyms have been created for it.
Since it became fully operational on April 27, 1995, GPS has become a widely used aid to navigation worldwide, and a useful tool for map-making, land surveying, commerce, scientific uses, tracking and surveillance, and hobbies such as geocaching. Also, the precise time reference is used in many applications including the scientific study of earthquakes and as a required time synchronization method for cellular network protocols such as the IS-95 standard for CDMA.
For more information about Global Positioning System, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
