GPS is a Satellite Navigation System

• GPS is funded by and controlled by the U. S. Department of Defense (DOD). While there are many thousands of civil users of GPS world-wide, the system was designed for and is operated by the U. S. military.

• GPS provides specially coded satellite signals that can be processed in a GPS receiver, enabling the receiver to compute position, velocity and time.

• Four GPS satellite signals are used to compute positions in three dimensions and the time offset in the receiver clock.

前一張投影片

下一張投影片

回到第一張投影片

檢視圖形版本