What is GPS?

GPS means Global Positioning System.Roger L. Easton, an American scientist is the principal inventor and designer of the Global Positioning System. GPS, the hottest high-tech development is maintained by the United States government and is freely accessible to anyone with a GPS receiver.The concept started in the late '60s but the first satellite wasn't launched until February 1978. In 1989 the Magellan Corp. introduced the first hand-held GPS receiver. In 1992 GPS was used in Operation Desert Storm. On March 1996 the President decided to make GPS free for civilian users.

System Description:
GPS has three 'segments':

1. The space segment now consists of 28 satellites, each in its own orbit about 11,000 nautical miles above the Earth.
2. The user segment consists of receivers, which you can hold in your hand or mount in your car.
3. The control segment consists of ground stations (five of them, located around the world) that make sure the satellites are working properly.

* Scientists Use GPS Signals to Measure Earth's Atmosphere.

*Policeman use GPS to track the suspects.

*Surveyors use Global Positioning System (GPS) technology to accurately survey and mark land.

GPS

It is effectively used in many fields.IMAGE : TEDDIBOI

GPS is the only system today that can show your exact position on the Earth anytime, in any weather, no matter where you are!

In simple words , GPS is used to track the location of everything.The time it takes to reach the tracked location from your place will also be shown.