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Geography -- Global positioning systems (GPS)
71 - 75
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...
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...
USNO NAVSTAR Global Positioning System
This reference provides an overview of the United States Naval Observatory's (USNO) NAVSTAR Global Positioning System (GPS). Topics include GPS signal characteristics, selective availability, anti-spoofing, GPS system...
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.
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