Basic location finding, function - GF82.61-P-3006TJ
MODEL 211.0/2 with CODE (529) HIGH Class Japan
Position finding
With code (529) HIGH Class Japan the navigation processor is integrated in the COMAND operating, display and control unit (A40/3)
Basic location finding is the base function of continuous map finding. It is carried out continuously by the navigation processor in the event of "terminal 15R ON", and is independent of the DVD-ROM map. The current position is stored after "terminal 15R OFF."
The following information is calculated with the aid of basic location finding
- Direction of travel (forward or reverse)
- Distance traveled
- Direction in which vehicle is pointing
The basic location finding is carried out approx. 1/s
Direction of motion
Using the "wheel rotational direction" signal, which is also sent by the ESP, SPS [PML] and BAS control unit (N47-5) and transmitted by the central gateway control unit (N93) to the CAN interior (CAN-B), the navigation processor detects the direction of travel (forward or reverse).
Mileage covered
The navigation processor receives the signals for the wheel RPM from the ESP, SPS [PML] and BAS control unit (N47-5) via engine compartment CAN (CAN-C). The evaluation of the wheel speed signals reveals the mileage covered.
Vehicle orientation
From the yaw rate sensor (gyro sensor) data and the sequence of locations calculated with GPS the navigation processor calculates the alignment (compass direction) of the vehicle.
The difference between the calculated mileage and actual mileage covered between 2 turning-off points is used to re-calibrate the tire circumference automatically.
Errors with basic location finding
Rolling with "terminal 15R OFF" or transport of the vehicle also distort the position finding.
In both cases, this deviation is automatically corrected by the navigation processor on receipt of the GPS data.
Calibration
Wheel calibration is necessary following a tire change. For this purpose, it is necessary to enter the tire size, e.g. 225/060/016 and the coding, whether new (depth of tread approx. 5 up to 10 mm) or used tires (depth of tread approx. 3 up to 5 mm) were mounted.
The entry is accomplished with Star Diagnosis or directly at the COMAND operating, display and control unit (A40/3). A special calibration drive is not required.
| Global positioning system location finding, function | GF82.61-P-3007TJ |
Global positioning system (GPS) location finding, function - GF82.61-P-3007TU
MODEL 211.0/2 up to 30.6.06 with CODE (528) HIGH Class USA
Shown on model 211.0
The Global Positioning System (GPS) is a satellite-assisted localizing system set up by the US Defense Ministry. It is toll-free and is available throughout the world. Currently several satellites are on six different orbits of the earth. The GPS satellites send time data permanently.
Four satellites are required for the initial calculation of the position, then three receivable satellites are sufficient.
GPS position finding is irreplaceable for journeys outside the digitized map area and after vehicle transport (e.g. train or ferry journeys and towing).
A new GPS location (after interruption of the satellite reception) can take several minutes (when the equipment is first commissioned up to 20 minutes).
With code (527) navigation module for COMAND and code (528) HIGH Class USA the external navigation module is designated navigation processor (N41/1)
GPS map matching function
The navigation processor (N41/1) calculates the vehicle location and accuracy of location (A2/49a2) from the satellite signals received and amplified by the GPS antenna.
The actual calculation is essentially based on the measurement of the travel times of the signals sent synchronously by the various satellites. Here, an important prerequisite is that the satellite and receiver clocks are synchronized.
For this purpose, the receiver has an automatic time correction feature which again is possible with the aid of the satellite signals. If the navigation processor (N41/1) determines that the basic position finding is less precise than the GPS position finding, the currently calculated position is corrected using the GPS data. In addition, the vehicle's course of travel is determined with the aid of the sequence of the locations calculated with GPS.
The location is recalculated approx. 50 times per minute by the GPS system
Possible interference when receiving GPS signals
As GPS operates in the GHz range (microwaves) and the signals are weak, reception interference may occur due to
- Atmospheric disturbances such as weather, water vapor, mist
- Multipath reception due to signal reflections, such as on house walls
- Signal shadowing e.g. in built up areas and near tunnels, high buildings, trees
GPS reception therefore necessitates a clear view of the sky. The accuracy of GPS location finding is approx. 100 m or better.
| Map-supported location finding, function | GF82.61-P-3008TU |
Map-supported location finding, function - GF82.61-P-3008TJ
MODEL 211.0/2 with CODE (529) HIGH Class Japan
Map supported location finding
Function
Map-supported location finding is available only in the digitized area of the DVD-ROM map.
By means of the comparison of the calculated position of the vehicle with the DVD-ROM map, the deviation can be recognized and corrected automatically.
Function
The position of the vehicle is continuously followed on the DVD-ROM map by the navigation processor.
In the event of deviations from the calculated routes in the course of the trip, the position coordinates of the basic position finding will be corrected if necessary.
With code (529) HIGH Class Japan the navigation processor is integrated in the COMAND operating, display and control unit (A40/3)
| Operating, display and control module, location/purpose/design/function | GF82.85-P-3114TJ |
Map-supported location finding, function - GF82.61-P-3008TU
MODEL 211.0/2 up to 30.6.06 with CODE (528) HIGH Class USA
Shown on model 211.0
Map-supported location finding is only available in the digitized area of the DVD map.
By comparison with the calculated position of the vehicle with the DVD map, the deviation can be recognized and corrected automatically.
Function
The position of the vehicle is constantly tracked on the DVD map by the navigation processor (N41/1).
In the event of deviations from the calculated routes in the course of the trip, the position coordinates of the basic position finding will be corrected if necessary.
With code (527) navigation module for COMAND and code (528) HIGH Class USA the external navigation module is designated navigation processor (N41/1)
| Operating, display and control unit, location/task/design/function | GF82.85-P-3114TU |
MODEL 211.0/2 with CODE (525) MB Audio 50 APS radio
Scheme 281
| Radio and navigation unit, location | The radio control panel and navigation unit (A2/56) is located in the center console. | |
|---|---|---|
| Radio and navigation unit, task | The control panel is designed for the central control of the audio, navigation and telematics components. | |
| Radio/navigation unit, design | GF82.61-P-4109-03T | |
| Radio and navigation unit, function | GF82.61-P-4109-04T |
CD player with changer, location/task/design/function - GF82.64-P-3113T
Model 211.0/2
Scheme 282
| CD player with changer, location | The CD changer (A2/6) is installed in the 3rd radio opening of the center console and is concealed by the upper control panel control unit (N72/1). The standard installation position of the CD changer (A2/6) is horizontal. However, other installation positions are possible through the spring adaptation. | |
|---|---|---|
| CD player with changer, purpose | Playing audio CDs Changing the CDs in the magazine | |
| CD player with changer, design | 6-disk CD changer magazine MOST interface Wake-up line input | |
| CD player with changer, function | GF82.64-P-3113-02T |
CD player with changer, location/task/design/function - GF82.64-P-3113TJ
MODEL 211.0/2 with CODE (529) HIGH Class Japan
Shown on model 211.0
Scheme 283
| CD player with changer, location | The CD changer (A2/6) is located in the third radio opening of the center console below the COMAND operating, display and control unit (A40/3). It is concealed by the lower control panel. | |
|---|---|---|
| CD player with changer, task | Playing audio CDs (Compact Disc) Changing the CDs in the magazine | |
| CD player with changer, design | CD changer magazine for 6 CD's MOST interface Wake-up line The factory-planned installation position of the CD changer (A2/6) is horizontal. However, other installation positions are possible through the spring adaptation. | |
| CD player with changer, function | GF82.64-P-3113-02TJ |
CD player with changer, location/task/design/function - GF82.64-P-3113TU
MODEL 211.0/2 with CODE (528) HIGH Class USA
Scheme 284
| CD player with changer, location | The CD changer (A2/6) is installed in the third radio opening in the center console under the COMAND operating, display and control unit (A40/3). It is concealed by the upper control panel control unit (N72/1). | |
|---|---|---|
| CD player with changer, purpose | Playing audio CDs (Compact Disc) Changing CDs contained in the magazine | |
| CD player with changer, design | 6-disk CD changer magazine MOST interface Wake up line The installation position of the CD changer (A2/6) planned by the plant is horizontal. However, other installation positions are possible through the spring adaptation. | |
| CD player with changer, function | GF82.64-P-3113-02TU |