Global Positioning System (GPS) is a space based satellite navigation system that provides location and time information. Initially, GPS only available for military used in tracking, but now it is available to everyone. GPS is widely used in application such as military, robotics, astronomy and etc. But we can also see the application of GPS in our daily life such as navigation system in advance car or mobile phone with built in GPS. A basic GPS provides information such as location (latitude and longitude), altitude, speed, and time.