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[  Also see:   How GPS Works   Other GPS Tutorials   Satellite Tutorials   Wireless Tutorials  ]

 

GPS Overview

Author: Cathal Mc Daid

 GPS Overview global positioning system  The original theory behind Location-Based Services - or LBS - is to help you find out where you are or where something else is. There are several ways of determining location, including GPS, cell locations, triangulation and other methods.
This overview describes the history and workings of the Global Positioning System (GPS), as well as its uses and the future for it.



SMS

Table Of Contents

1 Introduction
2 GPS System Segments
2.1 GPS Satellite Constellation
2.2 Operational Control Segment (OCS)
2.3 User Receiving Equipment
3 GPS System Operation
3.1 Determining Your Position
3.2 Measuring Your Distance
3.3 Error Correction
3.4 Differential GPS
3.5 Carrier-Phase GPS
4 Uses of GPS Technology
4.1 Location
4.2 Navigation
4.3 Tracking
4.4 Mapping
4.5 Timing
5 GPS Competitors
5.1 GLONASS
5.2 Galileo
6 Conclusion