GPS satellites

GPS satellites

GPS (global positioning system) is a satellite-based navigation system, where the GPS satellites which berorbit on this earth to help a GPS device in a given position coordinates of the earth. Gps first developed for military applications, but since the 1980's, this system can be freely used. Gps work in any weather conditions, anywhere on earth, and at any time (24 hours). There is no full charge on the use of these gps service.

GPS satellites are orbiting the earth at a distance of approximately 12.000 km of the Earth's surface, satellites are constantly moving around the earth in less than 12 hours. The satellites are traveling at approximately 7000 kilometers per hour. Satellites use solar heat as energy source, the satellite also continue to fill the batteries so that the satellite is always moving, even when the sun was not there. There is a small rocket on each satellite to maintain the satellite in order not to get out of his job. At the moment (2006) There are 24 satellites that orbit above the earth's surface.

Here are a few interesting facts about the GPS satellite:

- GPS satellites first launched in 1978 in the store cthnya gps.

- Each satellite can survive 10 years. Gps satellite is always replaced and diorbitkan.

- A GPS satellite weighs approximately 2000 pounds and a wide panel suryanya approximately

17 meters.

- Electricity used by the transmitter is only about 50 watts or less.

Gps signal

GPS satellites send signals to the gps device with a radio signal, this signal can be glass and clouds and penetrate plastic, but was closer objects do not penetrate, such as tunnels, buildings, mountains, etc.. Gps satellite signal contains 3 types of information, in the first information includes identifying information that transmits satellite signals. The second is information about the condition of the satellite (good or bad condition of the dish). While the third information is information about the date and time and position coordinates of the earth.

Implementation gps

gps provide significant contributions to human life, especially in the areas of transportation, for example, you can see in the shop gps. Nowadays almost all the aircraft using the tool to determine the position gps navigation, so the plane can fly in accordance with their respective tracks. Here is a sample implementation gps:

- Aircraft navigation system

- Taxi position tracking system

- Systems to deal with car theft

- A system for remote control vehicles

- And so on ...

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