What is GPS and how does it work? The Global Positioning System (GPS) was developed by the United States Department of Defense. It is the only fully functional GPS system in the world. It uses a constellation of between 24 and 32 satellites that transmit microwave signals, which enable GPS receivers to determine their current location, the time, and their velocity. For more information go to www.detectiveu.com

Tagged with: • • • • • •

Filed under: Garmin Video Reviews

Like this post? Subscribe to my RSS feed and get loads more!