Asus R300 - Manual (Page 68)

. Glossary
D/D GPS reception
The GPS receiver uses satellite signals to calculate its (your) position and need at
least four signals to give a three-dimensional position, including elevation. Because the
satellites are moving and because objects can block the signals, your GPS device might
not receive four signals. If three satellites are available, the receiver can calculate the
GPS position but the accuracy is lower and the GPS device does not give you elevation
data: only 2D reception is feasible.
In Asus GO, you can see the GPS position quality on the GPS Data Screen.
2D and 3D GPS reception have nothing to do with the 2D and 3D display modes of the
map, which are ways of showing the map on the screen independently of the quality of
the GPS reception.
Active route
The instructions used in the ongoing navigation. You can save and load routes in Asus
GO, but at most one route is active at any give time, and it is always active until you
delete it, reach your destination or you shut down Asus GO.
For information how Asus GO shows the active route on the map.
City Centre
The City Centre is not the geometric centre of the settlement but an arbitrary point
the map creators have chosen. In towns and villages, it is usually the most important
intersection; in larger cities, it is an important intersection.