Finding Deformation of the Stright Rail Track by GNSS Measurements

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Abstract

In 2009, at the Gdansk University of Technology and Polish Naval Academy there has been carried out, for the first time, continuous satellite surveying of railway track by the use of the relative phase method based on the Polish Active Geodetic Network ASG-EUPOS and RTK (GPRS) real time service - NAVGEO. The analysis indicated strong connection between location of GNSS receiver and accuracy of position determination, the horizon obstruction deteriorated accuracy and impacts terrain obstructions, the precise GPS planning process on the position solution. It can be stated that implemented measuring technique opens a whole new perspective on applied research. As proved, it enables very precise determination of basic data definition for railway line modernization design. On-going research works focuses on the GNSS multi-receivers platform evaluation for projecting and stocktaking.

Analyses also focused on the values of deviations of transverse position XTE (Cross Track Error). In order to eliminate the influence of random measurement errors and to obtain the coordinates representing the actual shape of the track, the XTE variable was performed by different statistical and regression methods (least square method - LSM, weighted least squares - WLS, Linear Chebyshev low-pass filtering and fast Fourier transform). The paper presents the result of trial analyses realized on the newly constructed (rectilinear) and old-used up railway lines. The authors were searching the methods for filtering random measurement GNSS errors different from instantaneous shape deformations of the straight rail track.

[1] Baran W., New National System of Geodetic Coordinates in Poland, Geodezja i Kartografia, 1994, Vol. XLIII, No. 1, pp. 41-49.

[2] Baran L. W., Zieliński J. B., Active GPS Stations as a New Generation of the Geodetic Network, Geodezja i Kartografia, 1998, Vol. XLVII, No. 1-2, pp. 33-40.

[3] Baran L. W., Oszczak S., Zieliński J. B., The utilisation of space techniques in geodesy and in navigation in Poland (in Polish), Nauka, 2008 , No. 4, pp. 43-63.

[4] Bosy J., Graszka W., Leonczyk M., ASG-EUPOS The Polish Contribution to The EUPOS Project, Symposium on Global Navigation Satellite Systems, Berlin, 11-14 November 2008.

[5] Ciećko A., Oszczak B., Oszczak S., Determination of Accuracy and Coverage of Permanent Reference Stadion DGPS/RTK in Gdynia, Proceedings of the 7th Bilateral Geodetic Meeting Italy - Poland, 22-24 May 2003, Bressanone, Italy, Reports on Geodesy, 2003, No. 2, pp. 45-51.

[6] Cord-Hinrich J., SAPOS-Part of a Geosensors Network, Symposium on Global Navigation Satellite Systems, Berlin, 11-14 November 2008.

[7] Dziewicki M., Felski A., Specht C., Availability of DGPS Reference Station Signals on South Baltic, Proceedings of the 2nd European Symposium on Global Navigation Satellite Systems - GNSS ’98, Toulouse, France, 1998.

[8] Gocał J., Strach M., The apply of RTK in engineering - GPS receivers on tracs (in Polish), Geodeta, 2004, No. 5.

[9] Koc W., Specht C., Results of satellite measurements of the railway tracs (in Polish), Technika Transportu Szynowego, 2009, No. 7-8.

[10] Koc W., Specht C., Jurkowska A., Chrostowski P., Nowak A., Lewiński L., Bornowski M., Qualifying of the course of the railway-route in the way of satellite measurement (in Polish), II Scientific-Technical Conference ‘Designing, the construction and the maintenance of the infrastructure in the rail transport’, INFRASZYN 2009, Zakopane 2009.

[11] Landau H., Vollath U., Xiaoming Chen, Virtual Reference Stations versus Broadcast Solutions in Network RTK - Advantages and Limitations, GNSS Conference 2003, Graz, Austria, April 2003.

[12] Rizos C., Yan T., Omar S., Musa T., Kinlyside D., Implementing network-RTK: the SydNET CORS infrastructure, The 6th International Symposium on Satellite Navigation Technology Including, Mobile Positioning & Location Services, Melbourne SatNav 2003, Australia, 22-25 July 2003.

[13] RTCM Recommended Standards for Differential GNSS (Global Navigation Satellite Systems) Service, Version 3.0, RTCM Paper 30-2004/SC104-STD, 2004.

[14] RTCM Recommended Standards for Network Transport of RTCM via Internet Protocol (NTRIP), Version 1.0, RTCM Paper 200-2004/SC104-STD, 2004.

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