What is the Global Positioning System and how does it work? GPS is a system of 30+ navigation satellites circling Earth. A GPS receiver in your phone listens for these signals. Once the receiver calculates its distance from four or more GPS satellites, it can figure out where you are. Earth is surrounded by navigation satellites. It is space-based radio-navigation system that broadcasts highly accurate navigation pulses to users on or near Earth. In the United States’ Navstar GPS, 24 main satellites in 6 orbits circle Earth every 12 hours. GPS is an abbreviation that means gallons per second, or is short for global positioning system, which is a network of satellites which can be used to locate vehicles and people. An example of GPS is how a person can be tracked while driving from New York to California. The working or operation of the GPS is based on the ‘trilateration’ mathematical principle. The position is determined from the distance measurements to satellites. The GPS receiver takes the information from the satellite and uses the method of triangulation to determine a user’s exact position.

Ansif S

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