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Optical Engineering • Open Access

New measurement method for eigen frequency of a fiber optic gyroscope
Author(s): Mingwei Yang; Yuanhong Yang

Paper Abstract

Eigen frequency is a very important parameter in a fiber optic gyroscope (FOG). To establish an accurate measurement of eigen frequency, we propose a new measurement method based on employing the square-wave, over-bias modulation with double eigen frequency. We investigate the proposed method both experimentally and theoretically. Experimental results show the measurement accuracy of eigen frequency is better than ±5  Hz, which satisfies the eigen frequency measurement of most FOGs. A theoretical model of the method gives a good explanation of the experimental results. The method is simple, low-cost, and easy to implement. In addition, it can greatly improve the accuracy of the eigen frequency measurement without needing additional hardware for existing gyro systems.

Paper Details

Date Published: 1 February 2013
PDF: 8 pages
Opt. Eng. 52(2) 024401 doi: 10.1117/1.OE.52.2.024401
Published in: Optical Engineering Volume 52, Issue 2
Show Author Affiliations
Mingwei Yang, BeiHang Univ. (China)
Yuanhong Yang, BeiHang Univ. (China)


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