Zhihao Wang, Wenxi Zhang, Zhou Wu, Xinxin Kong, Yongbiao Wang, Yiwei Hao. Research on the forward predictor of minimum mean square error in laser vibrometer[J]. Opto-Electronic Engineering, 2022, 49(5): 210391
- Opto-Electronic Engineering
- Vol. 49, Issue 5, 210391 (2022)
Fig. 1. Orthogonal demodulation flow chart
Fig. 2. Block diagram of LMS forward predictor
Fig. 3. Influence of input signal frequency on filter SNR
Fig. 4. Influence of input signal peak on filter SNR
Fig. 5. Influence of step size coefficient on filter SNR
Fig. 6. The effect of order on filter signal-to-noise ratio
Fig. 7. The impact of the input signal SNR on filter SNR
Fig. 8. Learning curves under different length coefficients
Fig. 9. Block diagram of adaptive filtering data processing flow for vibration velocity signal
Fig. 10. Experimental equipment and schematic diagram. (a) Schematic diagram of experimental system; (b) Physical drawing of experimental system
Fig. 11. Waveform and spectrum comparison before and after filtering. (a) Waveform and spectrum diagram before filtering; (b) Waveform and spectrum diagram after filtering
Fig. 12. Experiment on the relation between input signal frequency and filter SNR
Fig. 13. Experiment on the relationship between input signal peak value and filter SNR
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