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Global Positioning System

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Rural Technology

Our ancestors while traveling used different landmarks, position of stars etc to guide them and save them from getting lost. Now technology makes it possible to locate our position on the earth within a minute. This is possible because of invention of Global Positioning System(GPS)


There are 27 satellites revolving around the earth about 18000 km from earth. There are at least four satellites visible from any point on the earth at any given time .GPS receivers calculate distance of the location from satellites by timing a signal's journey from satellite to receiver.

When you get such distances of location from three locations , location of the point is accurately located on the surface of the earth. By using the GPS it is possible to carry out survey easily. It is possible to know longitude , latitude distance of point from sea level. Vehicle tracking is the one of fastest growing GPS application today. GPS equipped fleet vehicles, public transportation systems, delivery trucks and courier services use receivers to monitor their location at all times for both efficiency and driver safety.

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