Glossary - Asus R300 User Manual

. Glossary

The manual may contain many technical terms. Please look below for an explanation if you
are unfamiliar with some of them.
2D/3D GPS reception: The GPS receiver uses satellite signals to calculate its (your)
position. Depending on the current positions of the ever moving satellites in the sky,
and the objects in your environment, the signal that your GPS device receives may be
weaker or stronger. Your GPS needs strong signal from at least four satellites to give a
three dimensional position including elevation. If fewer satellites are available, it may still
be possible to calculate the position but the accuracy will be lower and the GPS device
will not calculate elevation. This is called 2D reception. ASUS GO shows the quality of
reception on the Main menu, the GPS Data screen and both map screens. Note that 2D
and 3D GPS receptions have nothing to do with the 2D and 3D display modes of the
map. That is a way of representing the map on the screen independently from the GPS
reception.
Accuracy: The difference between your real position and the one given by the GPS device
is affected by several different factors. The GPS is capable of providing a guess of its
current error based on the number of satellites it can receive a signal from, and their
position in the sky. This information is shown in ASUS GO on the GPS Data screen. Use it
as a general reference only. Note that several other factors affect the real accuracy, some
of which the GPS is incapable of estimating (e.g. signal delay in the ionosphere, reflecting
objects near the GPS device, etc.).
1