The Global Positioning System
- This is a preview of the essay.
To view the full text you must login!
Summary
Navigation has been one of the most fascinating subject for every culture and every civilisation. Chinese folklore tells of how 5,000 years ago, the Yellow Emperor discovered that a magnetic iron bar would always align in a north-south direction if allowed to hang freely. According to the legend, he mounted his device on a cart for use in the field; it helped him to defeat an invading barbarian army by allowing him to find his direction in the foggy battlefield so that he could command, dispatch, and supply his troops effectively. His victorious kingdom is thought to be the birthplace of Chinese civilization.
This paper will give a brief overview of the navigation method before and after the GPS. The working mechanism of GPS will be presented in much greater detail. What is the GPS? How does it work? How the signals are transmitted? What are the signals made of?..