| 摘要 |
A vehicle remote function system 10 and method is provided for determining a location of a fob 26 relative to a vehicle 12. The system includes a controller 24 adapted to be mounted in the vehicle and configured for communication with a plurality of antennas 22 mounted at different vehicle locations, the controller for use in determining the location of the fob based on ultra-wide band wireless signals 28 transmitted between the antennas and the fob. The controller is configured to locate the fob within one of multiple three-dimensional zones 14, 16, one of the zones configured to have a non-spherical shape. The zone may be positioned to one side of the vehicle and may have a volume less than the volume of a person. The plurality of antennas may be positioned inside the vehicle headliner 30 or dashboard 32 and, with the controller, may be used to locate the fob using one of a Kalman filter, triangulation or trilateration methods. |
