2024
DOI: 10.1088/1361-6501/ad166c
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Laser self-mixing interference displacement signal filtering method based on empirical mode decomposition and wavelet threshold

Changying Guo,
Qi Wang

Abstract: Objective:
In laser self-mixing interferometry displacement measurement, noise interference has a significant impact on the measurement results. To improve measurement accuracy, this paper proposes a filtering method that combines empirical mode decomposition (EMD) with wavelet thresholding.
Method:
First, the signal is decomposed into several intrinsic mode functions (IMFs) using EMD. Then, wavelet thresholding is applied to each IMF. Subsequently, the processed IMFs are reconstructed … Show more

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Cited by 3 publications
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