If you wish to contribute or participate in the discussions about articles you are invited to contact the Editor
Road Navigation
| Applications | |
|---|---|
| Title | Road Navigation |
| Author(s) | Rui Barradas Pereira. |
| Level | Basic |
| Year of Publication | 2011 |
Car navigation is currently the main application of GNSS. GNSS data combined with electronic maps allow positioning and guidance of the road user.
Route guidance using satellite navigation is already a well-established product offered by both by car manufacturers and standalone navigation devices. The majority of these systems are based on satellite navigation systems that can be integrated with onboard sensors (odometer and gyros) to compute optimal routes in real-time[1].
Application Architecture
Road Navigation applications are implemented using a car installed navigation device, a standalone Personal Navigation Device or a standalone application running on a mobile device. This mobile device can be GNSS-enable phone with multimedia capabilities or a custom Personal Navigation Device.
Normally the map and database of these applications are local although in some case the local application is supported by online services that provide database updates, additional dynamic data (such as weather) or even parts of the navigation functionality.
The process normally followed by these applications is:
- The user configures the application by defining a destination. Restrictions may be applied on how to get to the destination (e.g. use of public transport).
- The application will guide the user using visual and audio information to its destination.
- If the user diverts from the suggested route the application will recalculate the route.
Variants to this architecture are:
- The more basic pedestrian navigation applications support only outdoor pedestrian navigation not supporting public transportation.
- These applications can be combined with Location based Information Streams to provide additional information to the user.
These applications are considered non-critical applications.
The precision required by these applications is low. The current accuracy provided by civilian GPS is enough in most situations.
Application Characterization
Application Examples
Notes
References
- ^ Galileo Application Sheet - Road Applications, ESA and European Commission, October 2002