Method for determining an actual position of rails of a track

A method for determining an actual position of rails of a track by means of an optical sensor device, positioned on a rail vehicle, for recording the position of the track and adjacent installations, comprising the steps of:

• recording for a track section by means of the optical sensor device, a course of the track and a course of the adjacent catenary installations, as preliminary actual data, and
• transforming that the preliminary actual data into corrected actual data in an evaluation device wherein a recorded course of at least one adjacent installation is transformed into a course with a specified geometric shape;
• wherein the preliminary data is transformed into a polygon course, wherein the points of the point cloud which indicate the course of the at least one adjacent installation form said polygon course, during the data transformation, this polygon course is aligned along the specified straight line in a common reference system, each segment of the polygon course is shifted and rotated mathematically, and all points of the point cloud which lie on a plane perpendicular to the respective segment are correspondingly shifted and rotated along, in this manner, all points of the point cloud are transformed, so that the result are corrected actual data to ensure efficient data processing;
• so that the computing effort for transforming the preliminary actual data into corrected actual data is reduced;
• scanning the track using a scanner to determine an elevation of the track and recording said elevation by a clinometer arranged on the rail vehicle.