What Is A Mobile Navigation System; How Does It Work - Pioneer AVIC-505 Owner's Manual

What Is a Mobile Navigation System?

The word "navigation" refers to the act of finding a route to a particular location. Successful
navigation depends on a number of factors, but most important are knowledge of your
destination, knowledge of the territory between you and your destination, and knowledge of
your present location. On the basis of information you supply, such as an address or the name
of a town, this system helps you locate your destination precisely. It then assists in the other
two areas; sophisticated maps stored on CD-ROM provide detailed data about the road system
you will use to get there, while a combination of satellite technology and built-in sensors enable
your vehicle's location to be tracked at all times and compared with the maps. Using this data,
detailed directions for reaching your chosen destination are given as you drive. This
combination of technology is what we call a Mobile Navigation System.

How does it work?

This Pioneer Mobile Navigation System relies on detailed map information stored on a CD-
ROM. Before you begin a journey, the system helps you provide information about your
destination. A suggested route is then automatically calculated and then displayed. At the same
time, using a state-of-the-art global positioning system (GPS), the built-in gyrosensor, and the
speed pulse data, the system calculates exactly where your vehicle is. Your current position is
then displayed in the centre of the map. As soon as you begin to drive, the system gives you all
the directions you need to keep to the route and reach your destination; this guidance is clearly
shown on the display, but may also be given by voice. As you drive, all your vehicle's
movements are traced, so not only does your navigation system know where you are; it can also
tell if you are keeping to the route or if you have strayed off it for some reason.
• For more information about GPS, see "Positioning Technology" on page 129.