Navigon 10000300 User Guide - Page 20
About GPS navigation, The United States government operates the Global Positioning System
UPC - 898110001013
View all Navigon 10000300 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 20 highlights
Welcome Introducing Your NAVIGON 2100 max/2120 max 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. Geographical terrain (such as mountains), man-made structures (such as highway overpasses, bridges and tall buildings), and even weather can interfere with or disrupt the GPS signal. 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 may simply be continued. 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. 4 NAVIGON 2100 max/2120 max User's Guide April 2008 NAVIGON, INC. Revision 1.0