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Article

Digital Filtering of Railway Track Coordinates in Mobile Multi–Receiver GNSS Measurements

1
Faculty of Electrical and Control Engineering, Gdańsk University of Technology, 80–233 Gdańsk, Poland
2
Faculty of Navigation, Gdynia Maritime University, 81-374 Gdynia, Poland
3
Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, 80-233 Gdańsk, Poland
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(18), 5018; https://doi.org/10.3390/s20185018
Received: 22 July 2020 / Revised: 26 August 2020 / Accepted: 2 September 2020 / Published: 4 September 2020
(This article belongs to the Special Issue Sensors for Structural Health Monitoring and Condition Monitoring)
The article discusses an important issue in connection with the technique of mobile Global Navigation Satellite System (GNSS) measurements of railway track coordinates, which is digital filtering performed to precisely determine railway track axes. For this purpose, a measuring technique is proposed which bases on the use of a measuring platform with a number of appropriately distributed GNSS receivers, where two of them determine the directional base vector of the platform. The receivers used in the research had high measuring frequency in the Real Time Kinematic (RTK) operating mode and enabled correction of the obtained results in post–processing. A key problem discussed in the article is the method for assessing the quality of the measurement results obtained from GNSS receivers, and their preparation for further processing making use of geometrically constrained parameters of the base vector and specialized digital filtering, among other elements, to precisely determining the track axis. The obtained results confirm the applicability of the used method of GNSS signal processing. View Full-Text
Keywords: track geometry surveying; GNSS mobile measurements; condition monitoring; Savitzky–Golay filter; Whittaker filter; sensor data pre–processing track geometry surveying; GNSS mobile measurements; condition monitoring; Savitzky–Golay filter; Whittaker filter; sensor data pre–processing
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MDPI and ACS Style

Wilk, A.; Koc, W.; Specht, C.; Judek, S.; Karwowski, K.; Chrostowski, P.; Czaplewski, K.; Dabrowski, P.S.; Grulkowski, S.; Licow, R.; Skibicki, J.; Specht, M.; Szmaglinski, J. Digital Filtering of Railway Track Coordinates in Mobile Multi–Receiver GNSS Measurements. Sensors 2020, 20, 5018. https://doi.org/10.3390/s20185018

AMA Style

Wilk A, Koc W, Specht C, Judek S, Karwowski K, Chrostowski P, Czaplewski K, Dabrowski PS, Grulkowski S, Licow R, Skibicki J, Specht M, Szmaglinski J. Digital Filtering of Railway Track Coordinates in Mobile Multi–Receiver GNSS Measurements. Sensors. 2020; 20(18):5018. https://doi.org/10.3390/s20185018

Chicago/Turabian Style

Wilk, Andrzej, Wladyslaw Koc, Cezary Specht, Slawomir Judek, Krzysztof Karwowski, Piotr Chrostowski, Krzysztof Czaplewski, Pawel S. Dabrowski, Sławomir Grulkowski, Roksana Licow, Jacek Skibicki, Mariusz Specht, and Jacek Szmaglinski. 2020. "Digital Filtering of Railway Track Coordinates in Mobile Multi–Receiver GNSS Measurements" Sensors 20, no. 18: 5018. https://doi.org/10.3390/s20185018

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