dynamics data 28 of the vehicle 2 as is known said data include a longitudinal acceleration a transverse acceleration and a vertical acceleration and a roll rate pitch rate and yaw rate of the vehicle 2 these vehicle dynamics data 26 are used in the present embodiment in order to increase the information content of the gnss position data 16 and for example to precisely define the speed of the vehicle 2 on the road 4 the precisely defined position data 30 can then for example be used by a navigation device 32 in the vehicle 2 even if the gnss signal 12 is no longer available at all for example due to the shadowing building 10 wheel rotational speed sensors 34 which detect the wheel rotational speeds 36 of the individual wheels which are not referenced in detail of the vehicle 2 can optionally also be used in the present embodiment in order to further increase the information content of the gnss position data 16 in order to increase the aforementioned basic idea of the fusion sensor 22 the signal to noise ratio in the position data 16 and or the vehicle dynamics data 28 the information from the gnss position.