Research on a Wavelet Filtering Method of the Fiber Optic Gyroscope Based on EMD

Bin Zhou; Wei  Wang

doi:10.4028/www.scientific.net/AMR.705.253

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Research on a Wavelet Filtering Method of the Fiber Optic Gyroscope Based on EMD
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 705Research on a Wavelet Filtering Method of the...

Research on a Wavelet Filtering Method of the Fiber Optic Gyroscope Based on EMD

Abstract:

Due to the weak nonstationary characteristics of high-precision fiber optic gyro output random drift. In order to reduce the random drift, this paper proposes a new nonlinear, nonstationary filter method—the Empirical mode decomposition (EMD) method. Firstly some key technologies were discussed, and then proposed a Wavelet filter method of the fiber optic gyroscope based on EMD. Using fiber optic gyro data conducted off-line simulation verification. The results indicated that Wavelet filter method based on EMD can effectively remove high frequency noise compared with the ordinary wavelet filter method, and can also effectively suppress other noise. The bias instability of Gyro output from 0.0061 ° / h reduced to 0.001 ° / h. Accuracy is improved obviously.

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Periodical:

Advanced Materials Research (Volume 705)

Pages:

253-257

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.705.253

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Online since:

June 2013

Authors:

Bin Zhou, Wei Wang

Keywords:

Allan Variance, Empirical Mode Decomposition (EMD), Fiber Optic Gyro, Wavelet Filter

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