Correlation coefficient local capping REMD adaptive filtering method for laser interference signal

PLoS One. 2022 Jan 21;17(1):e0261875. doi: 10.1371/journal.pone.0261875. eCollection 2022.

Abstract

Considering the issue of noise reduction associated with Laser Doppler Interference (LDI) signal, the paper presented a correlation coefficient local capping robust empirical mode decomposition (REMD) filter algorithm for LDI laser sensor that enables more robust reconstruction of the displacement information from an LDI signal. The performance of the algorithm is studied, and it is shown that the algorithm is capable of removing high-frequency noise. Useful information can be extracted more easily by this method, and the Hilbert phase unwrapping displacement reconstructions method based on this algorithm has been experimentally validated. The experimental results show that the proposed method can improve the frequency separation performance in experiments, and is robust against noise interference.

MeSH terms

  • Algorithms*
  • Lasers*
  • Models, Theoretical*
  • Signal Processing, Computer-Assisted*
  • Signal-To-Noise Ratio

Grants and funding

Funding:Supported by the Open Project Program of Wuhan National Laboratory for Optoelectronics.NO. 2019WNLOKF011;National Natural Science Foundation of China under Grant 62175105 and 61875086;Jiang Su province innovative and entrepreneurial talent project. NO - Include this sentence at the end of your statement: The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.