What is G.P.S
The Global Positioning System (gps) is a navigation tool that gets you places and tells you where you are. Developed by the department of defense in 1973, GPS was originally designed to assist soldiers and military vehicle what would help them alot.
HOW it WORKS
GPS is in most phones and every sat nav it can get you anywhere. If your lost you can it will come up and will show you where you are instantly. The GPS system currently has 31 active satellites in orbits inclined 55 degrees to the equator. The satellites orbit about 20,000km from the earth's surface and make two orbits per day. The orbits are designed so that there are always 6 satellites in view, from most places on the earth.