Nokia N78 User Guide - Page 32

Positioning (GPS), About GPS, Assisted GPS (A-GPS) - specifications

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Positioning (GPS) Positioning (GPS) You can use applications such as Maps and GPS data to find out your location, or measure distances and coordinates. These applications require a GPS connection. Assisted GPS (A-GPS) Your device also supports Assisted GPS (A-GPS). A-GPS is a network service. About GPS Assisted GPS (A-GPS) is used to retrieve assistance data over a packet data connection, which assists in The Global Positioning System (GPS) is a worldwide radio navigation system that includes 24 satellites and their ground stations that monitor the operation of the satellites. Your device has an internal GPS receiver. A GPS terminal 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. The coordinates in the GPS are expressed in degrees and decimal degrees format using the international WGS-84 coordinate system. 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. You must have an internet access point defined in the device to retrieve assistance data from the Nokia A-GPS To enable or disable different positioning methods, such as Bluetooth GPS, press , and select Tools > Settings > General > Positioning > Positioning methods. service over a packet data connection. To define an access point for A-GPS, press , and select Tools > Settings > General > Positioning > Positioning server > Access point. A wireless LAN access point cannot be used for this service. Only a packet data 32 internet access point can be used. Your device asks for

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Positioning (GPS)
You can use applications such as Maps and GPS data to
find out your location, or measure distances and
coordinates. These applications require a GPS
connection.
About GPS
The Global Positioning System (GPS) is a worldwide
radio navigation system that includes 24 satellites and
their ground stations that monitor the operation of the
satellites. Your device has an internal GPS receiver.
A GPS terminal 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.
The coordinates in the GPS are expressed in degrees
and decimal degrees format using the international
WGS-84 coordinate system.
To enable or disable different positioning methods,
such as Bluetooth GPS, press
, and select
Tools
>
Settings
>
General
>
Positioning
>
Positioning
methods
.
Assisted GPS (A-GPS)
Your device also supports Assisted GPS (A-GPS).
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.
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. To define an
access point for A-GPS, press
, and select
Tools
>
Settings
>
General
>
Positioning
>
Positioning
server
>
Access point
. A wireless LAN access point
cannot be used for this service. Only a packet data
internet access point can be used. Your device asks for
32
Positioning (GPS)