検査技術・診断(9)

[VI-331] Method of specifying track inspection measurement position using GNSS

〇Manabu Okamoto¹, Yosuke Tsubokawa², Tomoyuki Ishikawa² (1.Japan Freight Rilway, 2.Railway Technical Research Institute)

Keywords:GNSS, Single positioning, RTK method(Relative positioning), Positioning error

In a track measuring car, the position is specified using pulse data created at a fixed distance interval according to the rotation of the wheels and data detected by a vehicle-mounted device such as a data depot to which kilometer information is added. However, this method requires the installation of a data depot and the installation of onboard device on the vehicle. Therefore, we are studying the use of positioning data by Global Positioning Satellite System (GNSS) as a method to more easily identify the position information of measurement data. In this paper, we verify the positioning accuracy of GNSS by running test and report the result of the study on the applicability to track inspection.