Patent ID: 6804621
Filing Date: 2004-10-12
Classification: B61L,E01B

Abstract:
A computerized system for aligning measured track data collected from a length of railroad track to correct geographic location information for geometric features contained in the data comprising:a first data repository containing track geography data; a second data repository containing the measured track data; and a processing component for comparing the measured tack data to the track geography data; characterized in that the track geography data is reconstructed to match in format and track length to the measured track data and then cross-correlated reference data to the measured track data, the cross correlation made in whole and or in matching portions thereof for purpose of identifying shift in alignment between the data types, the shift relating to misalignment of geometric and geographic signatures present in both data types including shift identified as odometer error value in the measured track data, the identified shifts used to correct geometric, geographic, and odometer error misalignment in the measured track data with respect to the reference data.