Differential Global Positioning System (DGPS)

GPS / DGPS Made Easy - Edition 2000

Graphic: GPS/DGPS Made Easy

This booklet is intended to provide mariners with a basic understanding of the Global Positioning System (GPS) and the Differential Global Positioning System (DGPS), and to assist them in choosing the most appropriate receiver for their needs.

The Coast Guard encourages mariners to learn about these systems and to take advantage of them. They will help make your voyage safer, especially when long distances and poor visibility levels make navigation difficult.