Innovative mobile method to determine railway track axis position in global coordinate system using position measurements performed with GNSS and fixed base of the measuring vehicle

Wilk, Andrzej; Koc, Władysław; Specht, Cezary; Skibicki, Jacek; Judek, Sławomir; Karwowski, Krzysztof; Chrostowski, Piotr; Szmagliński, Jacek; Dąbrowski, Paweł; Czaplewski, Krzysztof; Specht, Mariusz; Licow, Roksana; Grulkowski, Sławomir

doi:10.1016/j.measurement.2021.109016

Cited by 10 publications

(7 citation statements)

References 20 publications

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“…In turn, m∆x(y), taking into account the principle of equal influence, can also be calculated by formula (4). Given that ∆x=x2-x1, ∆y=y2-x1, we obtain I.e., the coordinates of the working reference points should be determined with a root mean square error not exceeding 3.5 mm.…”

Section: Resultsmentioning

confidence: 99%

Geodetic network for the construction of the high-speed railway line

Kanashin

2023

E3S Web Conf.

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Geodetic support for construction and operation of high-speed railways requires high-precision geodetic work both at the construction stage and during operation of the structure. Geodetic separation network, being the basis of mainline construction, requires special care and accuracy in measurements for its creation. The analysis of studies carried out in this field shows their insufficiency or incorrectness, and the comparison of current rules and regulations documents shows their contradiction. In the article, based on the results of existing scientific works, on the basis of the allowable standard values of outstanding lateral accelerations, the necessary accuracy of building a marking network for the construction of a railway line with speeds up to 400 km/h is calculated. On the basis of the analysis of existing regulatory documents of various countries engaged in high-speed rail traffic, the correctness of the obtained result has been proved. The imperfection of the Russian normative base in the field of construction of such objects is shown. Based on the findings, practical recommendations are given on methods for constructing a planned network for the construction of a high-speed highway and fixing its points, which can significantly reduce the cost and intensity of work on its creation, as well as directions for further necessary research in the field of geodetic support for the construction of high-speed highways.

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Section: Resultsmentioning

confidence: 99%

Geodetic network for the construction of the high-speed railway line

Kanashin

2023

E3S Web Conf.

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“…In the first step, the recorded track axis coordinates should be corrected using angles α v and α t measured with inclinometers [33,34] or by means of an inertial system. Then, these results can be used for reconstructing the existing position of the railway track axis.…”

Section: Assumptions Of the Methods To Determine Railway Track Curvaturementioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Koc

Wilk

Specht

et al. 2021

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The article discusses the applicability of a novel method to determine horizontal curvature of the railway track axis based on results of mobile satellite measurements. The method is based on inclination angle changes of a moving chord in the Cartesian coordinate system. In the presented case, the variant referred to as the method of two virtual chords is applied. It consists in maneuvering with only one GNSS (Global Navigation Satellite System) receiver. The assumptions of the novel method are formulated, and an assessment of its application in the performed campaign of mobile satellite measurements is presented. The shape of the measured railway axis is shown in the national spatial reference system PL-2000, and the speed of the measuring trolley during measurement is calculated based on the recorded coordinates. It has been observed that over the test section, the curvature ordinates differ from the expected waveform, which can be caused by disturbances of the measuring trolley trajectory. However, this problem can easily be overcome by filtering the measured track axis ordinates to obtain the correct shape -this refers to all track segments: straight sections, circular arcs and transition curves. The virtual chord method can also constitute the basis for assessing the quality of the recorded satellite signal. The performed analysis has shown high accuracy of the measuring process.

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“…For example, the main aim of [ 66 ] was to align all the available LiDAR trajectories of a road vehicle to confirm the of accuracy of GNSS/INS. The authors of [ 67 ] proposed innovative method to determine the railway track axis. Two GNSS receivers were applied what significantly improved precision of measurements and simplified the calculations of positioning corrections.…”

Section: Introductionmentioning

confidence: 99%

Determination of Turning Radius and Lateral Acceleration of Vehicle by GNSS/INS Sensor

Jagelčák

Gnap

Kuba

et al. 2022

Sensors

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In this article, we address the determination of turning radius and lateral acceleration acting on a vehicle up to 3.5 t gross vehicle mass (GVM) and cargo in curves based on turning radius and speed. Global Navigation Satellite System with Inertial Navigation System (GNSS/INS) dual-antenna sensor is used to measure acceleration, speed, and vehicle position to determine the turning radius and determine the proper formula to calculate long average lateral acceleration acting on vehicle and cargo. The two methods for automatic selection of events were applied based on stable lateral acceleration value and on mean square error (MSE) of turning radiuses. The models of calculation of turning radius are valid for turning radius within 5–70 m for both methods of automatic selection of events with mean root mean square error (RMSE) 1.88 m and 1.32 m. The models of calculation of lateral acceleration are valid with mean RMSE of 0.022 g and 0.016 g for both methods of automatic selection of events. The results of the paper may be applied in the planning and implementation of packing and cargo securing procedures to calculate average lateral acceleration acting on vehicle and cargo based on turning radius and speed for vehicles up to 3.5 t GVM. The results can potentially be applied for the deployment of autonomous vehicles in solutions grouped under the term of Logistics 4.0.

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Innovative mobile method to determine railway track axis position in global coordinate system using position measurements performed with GNSS and fixed base of the measuring vehicle

Cited by 10 publications

References 20 publications

Geodetic network for the construction of the high-speed railway line

Geodetic network for the construction of the high-speed railway line

Bulletin of the Polish Academy of Sciences: Technical Sciences

Determination of Turning Radius and Lateral Acceleration of Vehicle by GNSS/INS Sensor

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