Positioning; About Gps; Assisted Gps (A-Gps); Maps - Nokia 6720 User Manual
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Positioning
6. Positioning
About GPS
The coordinates in the GPS are expressed in the degrees and
decimal degrees format using the international WGS-84
coordinate system.
The Global Positioning System (GPS) is operated by the
government of the United States, which is solely responsible
for its accuracy and maintenance. 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 your location, buildings,
natural obstacles, and weather conditions. The GPS receiver
should only be used outdoors to allow reception of GPS
signals.
Any GPS should not be used for precise location
measurement, and you should never rely solely on location
data from the GPS receiver and cellular radio networks for
positioning or navigation.
Different positioning methods can be enabled or disabled in
positioning settings.
Assisted GPS (A-GPS)
Your device also supports assisted GPS (A-GPS).
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A-GPS is a network service.
Assisted GPS (A-GPS) is used to retrieve assistance data over
a packet data connection, which assists in calculating the
coordinates of your current location when your device is
receiving signals from satellites.
When you activate A-GPS, your device receives useful satellite
information from an assistance data server over the cellular
network. With the help of assisted data, your device can
obtain the GPS position faster.
Your device is preconfigured to use the Nokia A-GPS service,
if no service provider-specific A-GPS settings are available.
The assistance data is retrieved from the Nokia A-GPS service
server only when needed.
To disable the A-GPS service, select
Connectivity > GPS data and Options > Positioning
settings > Positioning methods > Assisted GPS >
Disable.
You must have an internet access point defined in the device
to retrieve assistance data from the Nokia A-GPS service over
a packet data connection. The access point for A-GPS can be
defined in positioning settings. Only a packet data internet
access point can be used. Your device asks you to select the
internet access point when GPS is used for the first time.
Maps
Select
> Maps.
> Settings >
© 2009 Nokia. All rights reserved.
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