Method of surveying a track

Details Method of surveying a track Method of surveying a track

2006-05-23

2006-05-23

Hoff, Marc S. (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Orientation or position

C702S094000, C702S158000, C702S165000, C701S019000, C701S205000, C701S207000, C033S287000

Reexamination Certificate

active

07050926

ABSTRACT:
In a method of surveying a track (9), a first or mobile measuring vehicle (1) and a second or stationary measuring vehicle (2) are placed at a distance apart from one another on a track section to be measured. A reference line (14) is formed by a laser beam emitted from the stationary measuring vehicle (2). 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 (29) located adjacent to the track section is determined, the said GPS reference station being known within a terrestrial coordinate system. The reference line (14) is aligned with the mobile measuring vehicle (1) on the basis of the determined position data, and the track surveying operation is carried out by advancing the mobile measuring vehicle (1) while changes of the actual track position relative to the reference line (14) are registered.

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