■ 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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2004 Nokia. All rights reserved.
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The GPS receiver in the Nokia Xpress-on GPS shell takes its power from the phone
battery. Note that using the GPS receiver may drain the phone battery faster.
Note: The Global Positioning System
The Global Positioning System (GPS) is operated by the United States government,
which is solely responsible for accuracy and maintenance of the system.
The accuracy of location data can be affected by adjustments to GPS satellites
made by the United States government and is subject to change with the United
States Department of Defense civil GPS policy and the Federal Radionavigation
Plan. Accuracy can also be affected by poor satellite geometry.
Availability and quality of GPS signals may be affected by buildings and natural
obstacles as well as weather conditions. The GPS receiver should only be used
outdoors to allow reception of GPS signals.
Therefore, GPS should not be used for precise location measurement and you
should never rely solely on location data from the GPS receiver. This GPS receiver
does not support location of the phone by emergency operators.