Performance assessment of discrete wavelet transform for de-noising of FBG sensors signals embedded in asphalt pavement

Article Engineering, Electrical & Electronic

A multi-peak detection algorithm for FBG based on WPD-HT

Zheng Lv et al.

Summary: The proposed algorithm combining wavelet packet decomposition denoising and Hilbert transform can effectively solve background noise issues, achieving higher accuracy and faster speed than conventional methods. It demonstrates outstanding performance in real-time temperature detection.

OPTICAL FIBER TECHNOLOGY (2022)

添加到收藏夹

Article Engineering, Electrical & Electronic

Noise suppression for phase-sensitive optical time-domain reflectometer based on non-local means filtering

Jianhang Su et al.

Summary: This paper investigates the noise suppression effect of three intrusion cases processed by fast NLM in Phi-OTDR, including single-position intrusion, double-position intrusion and riding along the optical cable, utilizing both simulations and experiments. Parameters of both search window and smoothing control parameter are adjusted to study the regularities of NSR, PSNR, and SSIM in the intrusion cases, with the optimal NLM parameters discussed in field tests. The results show that NSR, PSNR, and SSIM increase to a constant level with the increase of search window, while PSNR and SSIM initially increase and then decrease as the smoothing control parameter increases.

OPTICAL FIBER TECHNOLOGY (2022)

添加到收藏夹

Article Biophysics

Investigation of Discrete Wavelet Transform Domain Optimal Parametric Approach for Denoising of Phonocardiogram Signal

Samit Kumar Ghosh et al.

Summary: This study determined the optimal wavelet transform parameters for denoising phonocardiogram signals, with various evaluation metrics showing that the fifth-order Coiflet wavelet in combination with the soft thresholding function and rigrsure threshold selection rule yielded the best results, with improved performance at level 6 DLs.

JOURNAL OF MECHANICS IN MEDICINE AND BIOLOGY (2022)

添加到收藏夹

Article Engineering, Electrical & Electronic