A method of surveying a track

Details A method of surveying a track A method of surveying a track

G - Physics

01

C

G01C 7/04 (2006.01) B61K 9/08 (2006.01) G01S 5/14 (2006.01) G01S 17/88 (2006.01)

Patent

CA 2298363

To survey a track (9), a first, mobile measuring vehicle (1) is moved in the direction towards a second, stationary measuring vehicle (2), during which the deviations of the actual track position from a reference line (14) formed by a laser beam are registered. At the start of each measuring cycle, by using a GPS receiver (19), the relative position of the stationary measuring vehicle (2) with reference to a fixedly installed GPS reference station is determined, the said GPS reference station being known within a terrestrial coordinate system and being adjacent to the track section to be surveyed. The reference line (14) is aligned with the mobile measuring vehicle (1) on the basis of the determined position data, and subsequently the track surveying operation is carried out by advancing the mobile measuring vehicle (1).

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