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Key Concept is
Geography -- Geographic information systems (GIS)
191 - 195
An Introduction to Differential GPS
This resource discusses Differential Global Positioning Systems (DGPS), and why they were developed. It provides a brief history of GPS and the selective availability mode which was formerly used to degrade accuracy for...
GPS Tutorial by Trimble
This animated tutorial introduces users to Global Positioning Systems (GPS) technology. Topics include what GPS is, how it works, timing, satellite error, differential GPS, and how to use GPS. There is also a glossary.
Basic GPS Glossary by GARMIN
Created by the Garmin Corporation, this glossary provides definitions for terms used in Global Positioning Systems (GPS) technology.
Code Phase vs. Carrier Phase
This animation explains the code-phase and carrier-phase portions of the signal that is used for timing in Global Positioning Systems, and their uses. It is accompanied by a written explanation.
Garmin: What Is GPS?
This resource, published by a commercial producer of GPS equipment, introduces students to the concept of Global Positioning Systems (GPS). Topics include how GPS works and how accurate it is. There is also a brief...
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