“global positioning system”的概念、定义、翻译、参考文献-科学参考

global positioning system

Physics

A satellite-based navigational system that, with the use of a GPS receiver, can determine any point on or above the earth’s surface with a high degree of accuracy. The system uses a network of 24 satellites, designed and controlled by the US Department of Defense, originally for military use. Uses include marine and terrestrial navigation systems (e.g. satellite navigation systems in vehicles), surveying, and mapping.

https://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/faq/gps/ FAQ covering the global positioning system provided by the US Federal Aviation Administration

Space Exploration

A US satellite-based navigation system, a network of 24 satellites in six orbits, each circling the Earth once every 24 hours. Each satellite sends out a continuous time signal, plus an identifying signal. To fix position, a user needs to be within range of four satellites, one to provide a reference signal and three to provide directional bearings. The user's receiver can then calculate the position from the difference in time between receiving the signals from each satellite.
The position of the receiver can be calculated to within 0.5 m, although only the US military can tap the full potential of the system. Other users can obtain a position to within 100 m. This is accurate enough to be of use to boats, walkers, and motorists, and suitable receivers are on the market.

Electronics and Electrical Engineering

See GPS.

单词	global positioning system
释义	global positioning system Physics A satellite-based navigational system that, with the use of a GPS receiver, can determine any point on or above the earth’s surface with a high degree of accuracy. The system uses a network of 24 satellites, designed and controlled by the US Department of Defense, originally for military use. Uses include marine and terrestrial navigation systems (e.g. satellite navigation systems in vehicles), surveying, and mapping. https://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/faq/gps/ FAQ covering the global positioning system provided by the US Federal Aviation Administration Space Exploration A US satellite-based navigation system, a network of 24 satellites in six orbits, each circling the Earth once every 24 hours. Each satellite sends out a continuous time signal, plus an identifying signal. To fix position, a user needs to be within range of four satellites, one to provide a reference signal and three to provide directional bearings. The user's receiver can then calculate the position from the difference in time between receiving the signals from each satellite. The position of the receiver can be calculated to within 0.5 m, although only the US military can tap the full potential of the system. Other users can obtain a position to within 100 m. This is accurate enough to be of use to boats, walkers, and motorists, and suitable receivers are on the market. Electronics and Electrical Engineering See GPS.
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