Correction of determined coordinates of railway tracks in mobile satellite measurements
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Gdańsk University of Technology, Faculty of Electrical and Control Engineering
Gdynia Maritime University, Department of Geodesy and Oceanography
Gdańsk University of Technology, Faculty of Civil and Environmental Engineering
Submission date: 2020-04-25
Final revision date: 2020-07-21
Acceptance date: 2020-07-21
Online publication date: 2020-08-03
Publication date: 2020-08-03
Corresponding author
Krzysztof Karwowski   

Gdańsk University of Technology, Faculty of Electrical and Control Engineering
Diagnostyka 2020;21(3):77-85
This article examines one of the basic issues related to the technique of mobile satellite measurements in railway tracks. This problem concerns the correction of the determined coordinates of the track centerline. The need to perform this operation results from the GNSS receivers positioning at a certain height above the level of the existing track axis, leading to longitudinal and lateral shifts of antennas. The key problem here is the determination of the local horizontal coordinate system in each measured position. For the analysis, the authors defined the directional baseline vector of the measuring platform on the basis of positions given by two satellite antennas, positioned over the pivots of its bogies. This work presents the procedure for determining the corrections values.
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