US 12,461,227 B2
Method and apparatus for determining a lateral vehicle position
Lila Vinski, Markham (CA)
Assigned to Kapsch TrafficCom AG, Vienna (AT)
Filed by Kapsch TrafficCom AG, Vienna (AT)
Filed on Nov. 15, 2022, as Appl. No. 18/055,434.
Claims priority of application No. 22152011 (EP), filed on Jan. 18, 2022.
Prior Publication US 2023/0228867 A1, Jul. 20, 2023
Int. Cl. G01S 13/87 (2006.01)
CPC G01S 13/878 (2013.01) 16 Claims
OG exemplary drawing
 
1. A method for determining a lateral position of a vehicle passing a road and carrying a transponder, the lateral position being transverse to a longitudinal direction of travel of the vehicle, the method using at least two antennas mounted at different predetermined lateral positions of the road and connected to a processor, the method comprising:
during the passing of the vehicle, wirelessly triggering the transponder and recording a multitude of signals from responses of the transponder by the processor, each signal being received via one of the at least two antennas and recorded as i) a time of receipt of said signal at said one of the at least two antennas and ii) the predetermined lateral position of said one of the at least two antennas;
generating by the processor a regression curve of lateral position versus time fitting all recorded signals; and
determining by the processor the lateral position of the vehicle from the generated regression curve.