The satellites serve to locate the vehicle. The duration of the vehicle ultrasound signal is transmitted to all the satellites and therefore, the position of the vehicle can be precisely determined with an accuracy of 10 mm. Depending on the size of the system, 3 satellites are necessary for the fully automated digital operation of the Car System Digital.
All devices are radio-based, 2-way short-range transmission systems, which are regulated by the European standard EN 300-220-1 (2). Published under: ETSI EN 300 220-2 V2.1.1
The frequency spectrum includes the bands 868-870 MHz.
![Car System Digital, Single satellite [-de-] freigestellt 1](/xs_db/BILD_DB/1/161/www/85/161353_fg_01.gif)
