GPS from "Global Positioning System is on earth with satellite positioning system
.The history of design and construction by the Ministry of defence the United States earlier this year 1970 named the official Navigation. Signal Timing and Ranging Global Positioning System (NAVSTAR GPS GPS.)Hour and available all over the world!GPS incorporates elements of 3 sections
1. The space (Space segment)
2. The control station (Control segment)
3. User part (User segment)
the space (Space segment) consists of a
.A satellite orbiting the earth 24 loved operation 21 loved reserve 3 moon floating in orbit around 20 high,000 kilometers around world 1 around take orbit 12 hours are all 6 orbit orbit each orbit is a วเทียม 4 loved to accuracy. Right, in a position calculation of coordinates GPS Receiver receiver on earth satellite to use atomic clock.Cesium atomic clock 2 house, and atomic rubidium 2 house
.The control station (Control segment)
(ground station serve control system, distributed according to any of the world to do improve the satellite data are accurate and up-to-date at all times. Divided into
1.Master control station
2 station satellite tracking. A GPS satellite tracking station transceiver 3 time
.Working in the master control station to receive position information and time of the motion of the satellite, but loved ones from other channels satellite tracking.
the user (User segment)
.The user, the user GPS means, including hardware, software, including techniques. That improve quality of received signal better.
the advantage and application of system GPS
helps navigate from one place to another as needed
* Help in tracking the movement of vehicles, people, animals and things!Helps to improve the accuracy of the position of the satellite data
assists in survey measuring nutrients mapping and the geographic information database
* Help to control machinery in agriculture
.Assists in the management of transportation
* Support service information of position (Location Based Service)
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sample other application GPS
1.The use of GPS control mechanical farming reduces problems in labor. Add speed and increase efficiency in management. The system GPS in the tractor in order to control seed drops drops fertilizer.With precise coordinates, according to the map and the command program
.
2.Application of GPS with transportation, transportation and traffic, has applications in transportation of goods by the implementation of GPS use control coupled with the cargo system.Traffic reports. The accident or construction work can connect to Google Earth look authentic. And the present commonly used as automotive navigation system
.
3.Application of GPS service information of position, a system GPS.
the future of the global positioning system
.At present, in addition to satellite GPS of the United States. There are satellite developed several systems, such as GLONASS of Russia GALILEO of European Union IRNSS of India and COMPASS. Of China.The times of the world: SatelliteGNSS (Global NavigationSatellite Systems).