Method and system for determining the distance or the current relative speed of at least two route-bound, in particular rail-bound, mobile objects

摘要

The invention relates to a method and a system method for determining the distance or the instantaneous relative speed between at least two mobile objects (20, 21) of a line-bound, in particular rail-bound, group of objects (2). A reliable determination of the distance between the leading object and a following object is achieved in that feature patterns obtained by an evaluation unit (202) of the leading object (20) as a location-based feature pattern as a function of time together with their detection time as a time stamp quasi in real time as reference features to the following object (21) that location-based feature patterns are determined as a function of time together with their acquisition time by a further evaluation unit (212) of the at least one subsequent object (21) and compared with the reference features for correspondence and that the time interval (ΔT) between the leading object (20) and the at least one following object (21) and/or the change in the time interval (dΔT) over time is/are determined from the match in order to determine the instantaneous relative speed (Fig. 1).