Overview; Introduction To Gps - Nokia Xpress-on User Manual

1. Overview

TM
The Nokia Xpress-on GPS shell allows you to use your Nokia 5140 phone for GPS
(Global Positioning System) navigation in outdoor activities. The Nokia Xpress-on
TM
GPS shell includes a GPS receiver and two Java applications called GPS and
Travel guide.
This user's guide describes how to install the upper and lower part of
the Nokia Xpress-on GPS shell and how to use these two applications.
Read this user's guide carefully before using the Nokia Xpress-on GPS shell. In
addition to this user's guide, read also the user's guide of your Nokia 5140 phone,
which provides important safety and maintenance information.
Check www.nokia.com/support or your local Nokia Web site for additional
information, downloads and services related to your Nokia product.

■ Introduction to GPS

GPS is a worldwide radio navigation system that includes 24 satellites and their
ground stations that monitor the operation of the satellites.
A GPS terminal (such as the GPS receiver in the Nokia Xpress-on GPS shell)
receives low-power radio signals from the satellites and measures the travel time
of the signals. From the travel time, the GPS receiver can calculate its location to
the accuracy of metres.
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Copyright 2004 Nokia. All rights reserved.