The diagram shows how the Global Positioning System works in order to help people find their location anywhere on earth.

The diagram explains the work of the Global Positioning System in providing an exact position to users on

earth

. Generally speaking, there are three parts of

this

system, beginning with

satellites

in space, the Base Transmission System (BTS) receiving and sending data to the users, and

finally

, from the users’ perspective, how people can know their position from the

satellites

. The figure reveals that there are 24

satellites

located around 20,000 km above the

earth

and orbiting consecutively. Each of them is powered by solar energy taken directly from the sun. Since precise

time

is important, the satellite is equipped with an atomic clock attached to its board to keep the

information

regarding

time

. In terms of exchanging

information

, the

satellites

use the antenna to trade

information

with the central station on

earth

. From the

earth

’s view, radar stations capture changes brought by the

satellites

passing over them.

This

information

will

then

be sent back to space using the BTS before

finally

will be broadcasted to the users. Two pieces of

information

are sent to the user, including the exact place and the

time

it was transmitted. In order to locate, our gadget will measure the distance between a person on

earth

and four

satellites

that are passing over it by comparing the

time

data was sent, and the

time

it was received.