Laser & Optoelectronics Progress, Volume. 57, Issue 15, 150601(2020)
De-Noising Method for Gyroscope Signal Based on Improved Ensemble Empirical Mode Decomposition
Figures & Tables(7)
Fig. 1. Results of Blocks signal obtaiend by EEDM with RSN=5 dB. (a) Noisy signal; (b) IMF components; (c) residual component and partial IMF components
Fig. 3. Correlation coefficient of IMF components and original signal after EEMD for Blocks signal with RSN=5 dB
Fig. 4. Original signal and de-noising results of gyroscope signal using different algorithms (taking z-axis as an example). (a) Original signal; (b) wavelet denoising; (c) EMD denoising; (d) DFA-EMD denoising; (e) EEMD denoising; (f) proposed algorithm
Fig. 5. Allan variance results of original signal and de-noising signals obtained by different algorithms
Table 1. Comparison of de-noising results for Blocks signal using proposed EEMD-M and some other algorithms
View tableTable 1. Comparison of de-noising results for Blocks signal using proposed EEMD-M and some other algorithms
Signal Input RSN /dB RSN after denoising /dB Wavelet EMD EMD-DFA EEMD Proposed method 1 9.46 9.63 10.06 7.71 12.97 2 10.32 9.81 10.79 8.74 13.50 3 10.75 9.83 11.62 9.67 13.96 4 11.50 9.14 12.41 10.69 14.48 5 11.90 9.20 13.17 11.65 14.99 6 12.72 13.87 13.78 12.59 15.41 7 13.26 14.58 14.78 13.54 15.87 Blocks 8 14.06 15.25 14.69 14.43 16.50 9 14.56 16.02 15.80 15.31 17.05 10 15.14 16.62 14.25 16.18 17.61 11 15.92 17.05 16.10 16.90 18.15 12 16.71 17.56 14.40 17.79 18.92 13 17.43 16.60 17.82 18.47 19.54 14 18.30 17.03 15.50 19.12 20.06 15 18.88 17.79 18.66 19.82 20.51
Table 2. Comparison of de-noising results of gyroscope signal using proposed algorithm and some other algorithms
View tableTable 2. Comparison of de-noising results of gyroscope signal using proposed algorithm and some other algorithms
Signal Noisy signal Wavelet denoising signal EMD signal DFA-EMD signal EEMD signal Signal obtained by proposed method MSE 4.4075×10-2 1.0777×10-2 9.2160×10-3 8.3660×10-3 8.7990×10-3 7.5510×10-3 MAE 0.1672 0.0901 0.0868 0.0863 0.0866 0.0862 Maximum error 0.8537 0.3572 0.2764 0.2123 0.2348 0.1143
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Qian Wu, Yu Liu. De-Noising Method for Gyroscope Signal Based on Improved Ensemble Empirical Mode Decomposition[J]. Laser & Optoelectronics Progress, 2020, 57(15): 150601
Paper Information
Category: Fiber Optics and Optical Communications
Received: Oct. 18, 2019
Accepted: Nov. 25, 2019
Published Online: Aug. 4, 2020
The Author Email: Yu Liu (liuyu@tju.edu.cn)
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