ABSTRACT -- The main objective of this article is to provide the information about the Global Positioning System (GPS) to the readers. Nowadays the GPS is very popular. It is widely used in many applications such as military, navigation, marine, mapping, agriculture, surveying, transportation etc. This article gives the details of the GPS to help the readers have a better view of GPS system. You will learn the basic of GPS, GPS structures, positioning method, GPS communication format; including how to interprete the data from GPS satellites. If we have the understanding of the GPS system, we can apply the GPS in variety uses.

KEYWORDS -- Global Positioning System, GPS, Satellite