TUNNEL DATA PROCESSING SYSTEM AND TUNNEL DATA PROCESSING METHOD

摘要

PROBLEM TO BE SOLVED: To accurately correct errors caused by GPS, a distance meter or the like with respect to input data obtained from mechanical measurement of the distance meter or the like in a tunnel not used by GPS.

SOLUTION: A tunnel data processing system inputs position data of an original coordinate system measured with a position detection means 210 such as the distance meter or a gyro device mounted on a running vehicle and tunnel inner face point group data of the original coordinate system synchronized with the position data by a wall face detection means 120 mounted on the vehicle through a data input part 120. The tunnel data processing system includes correcting errors of GPS from a difference between measured data with GPS concerning an inlet detected plate 310 and known position data, calculating the total of tunnel inside measuring errors accumulated with errors of the distance meter in a tunnel from a difference between measured data of the distance meter concerning an outlet detected plate 320 and known position data, and correcting to divide tunnel inside measuring errors for optional points on a kilometer post.

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