Navigon 10000140 User Guide - Page 17

About GPS Navigation, Caution

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Welcome Introducing Your NAVIGON 7100 About GPS Navigation GPS is based on a total of 24 satellites that circle the earth and are constantly transmitting their position. The GPS receiver uses this data and calculates its own geographical position on the basis of the information transmitted by the various satellites. For a sufficiently precise positioning it is necessary to obtain the data from at least three satellites. With the data from 4 or more satellites the altitude above sea level can also be ascertained. The determination has an accuracy of about 3 yards. Once the navigation device has determined your position, it can be used as a starting point for route calculation. The map data on your navigation device includes the geographical coordinates of all digitally recorded Points Of Interest (POIs), streets and places. This enables the device to calculate a route between a starting point and a destination. The calculation of the current position and its representation on the map takes place once every second so your current position is always shown on the map. If GPS reception is impaired, navigation is interrupted. The navigation software remains active. As soon as GPS reception is restored, the navigation system calculates any change of position which has occurred in the meantime. Navigation continues. Caution! The United States government operates the Global Positioning System (GPS) and is solely responsible for its accuracy and maintenance. Changes by the United States government may affect the accuracy and performance of all GPS equipment, including your personal navigation device. Caution! Ordinances or laws may restrict use of certain abilities of your navigation device on public or private land. January 2008 NAVIGON 7100 User's Guide 5 Revision 2.0 NAVIGON, INC.

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Welcome
Introducing Your NAVIGON 7100
January 2008
NAVIGON 7100 User’s Guide
5
Revision 2.0
NAVIGON, INC.
About GPS Navigation
GPS is based on a total of 24 satellites that circle the earth and are constantly trans-
mitting their position. The GPS receiver uses this data and calculates its own geo-
graphical position on the basis of the information transmitted by the various satellites.
For a sufficiently precise positioning it is necessary to obtain the data from at least
three satellites. With the data from 4 or more satellites the altitude above sea level can
also be ascertained. The determination has an accuracy of about 3 yards.
Once the navigation device has determined your position, it can be used as a starting
point for route calculation.
The map data on your navigation device includes the geographical coordinates of all
digitally recorded Points Of Interest (POIs), streets and places. This enables the
device to calculate a route between a starting point and a destination.
The calculation of the current position and its representation on the map takes place
once every second so your current position is always shown on the map.
If GPS reception is impaired, navigation is interrupted. The navigation software
remains active.
As soon as GPS reception is restored, the navigation system calculates any change
of position which has occurred in the meantime. Navigation continues.
Caution!
The United States government operates the Global Positioning System (GPS) and
is solely responsible for its accuracy and maintenance. Changes by the United States gov-
ernment may affect the accuracy and performance of all GPS equipment, including your per-
sonal navigation device.
Caution!
Ordinances or laws may restrict use of certain abilities of your navigation device
on public or private land.