M-ASK navigation system
- Navigation with DVD
In conjunction with option 606, the navigation system is integrated in the M-ASK. The navigation system has the following new features:
- Data for navigation on DVD
- Reading and storing the data for navigation in the RAM (Random Access Memory)
- Complete representation of Europe
- Manual alteration of the route calculated by the navigation system by route criteria (fastest route, motorway) and by the Via function.
- Dynamic route planning by using TMC information (avoiding traffic jams)
- List of stored destinations
- Exact calculation of the arrival time. By integration of the various types of streets (motorway, A roads, B roads) and the average speed of the vehicle, the arrival time can be calculated exactly.
- Better route guidance. When changing from one motorway or A road onto another, the road number is announced.
- GPS satellites
GPS satellites move around the earth in 6 nearly circular orbits. There are 4 GPS satellites per orbit, therefore there is a maximum number of 24 GPS satellites. Before the navigation system can process the reference signal from the GPS satellites (minimum 4 GPS satellites), the Almanac data must first be loaded.
- Loading almanac data
Almanac data delivers the following data and information to the navigation system:
- UTC (Universal Time Coordinate)
- Date
- Location of the GPS satellites
- Orbits
- Operational capacity of the GPS satellites
Once the navigation system has been switched on for the first time (terminal R ON) the GPS satellite Almanac data is received and loaded. The loading time depends on the number of "visible" GPS satellites and can take up to 20 minutes during the adaptation phase. Otherwise the almanac data is permanently stored in the system.
The Almanac data must be reloaded if the vehicle is transported over a distance of more than 300 km from the manufacturing point, e.g. after:
- Transportation from the Dingolfing factory.
- Return transport from abroad in the case of damage.
- Placing the vehicle on a train.
Navigation is still possible in the adaptation phase, both when the vehicle is stationary and when it is being driven. Navigation is highly inaccurate at first. The end of the adaptation phase and thus the maximum precision of the navigation system will be achieved after some time or a lengthy journey.
When almanac data is loaded, the navigation system is ready for operation 10 to 15 seconds after starting each time.