13 October 2008 The optical gyro signal de-noising based on EMD
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There are different kinds of noise in the optical gyro output signals. The signals imbedded noise are always non-stationary. Recent works have demonstrated that the noise can be separated from the original signal by the empirical mode decomposition (EMD). However, there are some shortages in the original algorithm of EMD, for example, the envelope mean computation and the time-consuming fitting. An improved EMD is introduced where quasi-mean filter and the extension segment approximation are proposed. The new EMD is used in ring laser gyro signal analysis and de-noising, and the Allan variance is used to evaluate the result.
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Yanhong Lu, Yanhong Lu, "The optical gyro signal de-noising based on EMD", Proc. SPIE 7129, Seventh International Symposium on Instrumentation and Control Technology: Optoelectronic Technology and Instruments, Control Theory and Automation, and Space Exploration, 71290M (13 October 2008); doi: 10.1117/12.807632; https://doi.org/10.1117/12.807632

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