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| GPS (Global Positioning System) |
The Global
Positioning System (GPS) is a satellite- based navigation system made up of a
network of 24 satellites placed into orbit by the U.S .Department of Defense.
GPS was originally intended for military applications, but in the 1980s, the
government made the system available for civilian use. GPS works in any weather
conditions, anywhere in the world, 24 hours a day. They are no subscription
fees or setup charges to use GPS.
GPS
satellites are used for navigational, surveying, mapping, and routing, charting
and time distribution purposes. GPS technology is a sophisticated as well as is
mainly integrated with complicated form of satellite technology that uses a
complex network of processors and servers to receive and transmit data to and
from the earth. GPS technology is mainly integrated with GSM (Global system of
mobile communications) data network protocol to located and update data.
GPS
satellites circle the earth twice a day in a very precise orbit and transmit
signal information to earth. GPS receivers take this information and use
triangulation to calculate the user’s exact location. Essentially, the GPS
receiver compares the time a signal was transmitted by a satellite with the
time it was received. The time difference tells the GPS receiver how far away
the satellite is. Now, with distance measurements from a few more satellites,
the receiver can determine the user’s position and display it on the unit’s
electronic map.
Transmission
signals from GPS satellites are received at base stations on earth. Base stations
use different forms of server technology and associated hardware devices to
store, interpret and analyze the data. The processed data can be saved in
different formats and can be used in accordance with the needs of the data
evaluator. The data stored can also be sorted, edited and filtered with the
help of advanced automated sorters, editors and filters.
