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Proceedings Paper

Application of a ring laser for measurement of track geometrical parameters
Author(s): Valery I. Gupalov; Andrei V. Mochalov; Alexander M. Boronachin
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Paper Abstract

Over last years, the ring lasers are wildly used as sensors of inertial measuring and navigational systems, due to such exceptional properties, as high accuracy, wide dynamic range, non-sensitivity to linear acceleration, et al. In the conditions of growing speeds and density of railway traffic, growing requirements to accuracy of measurements, the systems on ring laser gyro (RLG) and accelerometers seem to be the most promising. Track checking includes the use of track measuring cars or carriages automatically recording the railway condition control of the railway under a load by the use of specialized track measuring vehicles equipped with computers for registration and analysis of measurement results. Although the ring laser gyroscope provides a very high accuracy in the measurement of angular rates and angles, it does have one significant problem -- synchronization of the counter-propagating waves. This effect is usually referred to as lock-in. There were many solutions to the lock-in problem, but mechanical dithering of the RLG was finally adopted as a practical solution to it.

Paper Details

Date Published: 27 November 2000
PDF: 8 pages
Proc. SPIE 4316, International Conference on Lasers for Measurements and Information Transfer, (27 November 2000); doi: 10.1117/12.407675
Show Author Affiliations
Valery I. Gupalov, St. Petersburg State Electrotechnical Univ. (Russia)
Andrei V. Mochalov, St. Petersburg State Electrotechnical Univ. (Russia)
Alexander M. Boronachin, St. Petersburg State Electrotechnical Univ. (Russia)

Published in SPIE Proceedings Vol. 4316:
International Conference on Lasers for Measurements and Information Transfer
Vadim E. Privalov, Editor(s)

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