A Global Positioning System (GPS) are a system of satellites, computers,
and receivers that is able to determine the latitude and longitude of a
receiver on Earth by calculating the time difference for signals from
different satellites to reach the receiver.
Global Positioning Systems can be used to solve the following major problems:
Problem 1: Where am I?
Determining Location - at some point or another, almost everyone has
gotten lost. With a handheld GPS receiver, a person can locate their
exact position with a high level of accuracy.
Problem 2: How do I get there?
Navigating - A handheld GPS receiver is an excellent tool from getting
from point A to point B. By located your current position, and your
desired destination, a good handheld receiver can help you plot the
shortest course to your desired destination.
Problem 3: Where are they?
Tracking - A Handheld GPS system can track the movement of goods or even
people anywhere in the world. A receiver can be used to track packages,
vehicles, even an enemy army.
Problem 4: How can I make a map?
Mapping - Global Positioning Systems can be used to create highly detailed
maps of the world to assist travelers.
Problem 5: What time is it really?
Timing - one lesser-known potential application of GPS products is that
they can provide precision timing to people that use these products,
ensuring that users at different locations are synchronized to the same time.