User manual

5 Glossary
2D/3D 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.
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.
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.
GPS accuracy
Several factors have an impact on the deviation between your real position and the one given by
the GPS device. For example, signal delay in the ionosphere or reflecting objects near the GPS
device have a different and varying impact on how accurately the GPS device can calculate your
position.
Map
ASUS GO works with digital maps which are not simply the computerised versions of traditional
paper maps. Similarly to the paper road maps, the 2D mode of digital maps show you streets and
roads. In 3D mode, you can also see the height differences, for example valleys and mountains,
or buildings.
Digital maps, however, differ from paper maps in that you can use them interactively: you can
zoom in and out (increase or decrease the scale), you can tilt them up and down, turn them left
and right. In GPS-supported navigation, digital maps facilitate route planning.
Route
Can contain one or more via points. The last via point is the destination and the route is cut into
different legs (from one via point to another).