what is gps and how does it work?
WHAT IS IT?
The Global Positioning System (GPS) is a navigation and precise-positioning tool. Developed in 1973, GPS was originally designed to assist soldiers and military vehicles, planes, and ships in accurately determining their locations world-wide. GPS can pinpoint you location anywhere on Earth.
How does it work?
The GPS satellites transmit signals to a GPS receiver. These receivers passively receive satellite signals; they do not transmit and require an unobstructed view of the sky, so they can only be used effectively outdoors. Early receivers did not perform well within forested areas or near tall buildings.
Are You Lost?
Suppose you use your phone for another purpose, to figure out exactly where you are and to get turn-by-turn directions to where you're going. New phones that include global positioning system(GPS) receivers can do exactly that. With the right software or service package, they can pinpoint your location, give directions to your destination.