Table 2 Comparison of MSE results after denoising at different noise levels.

From: A denoising method for aeroengine gas path electrostatic signal of low signal-to-noise ratio based on IMFs optimized reconstruction and wavelet threshold

σ

MSE of the noisy signal

MSE of simulated signals denoised by the four methods

A

B

C

D

0.3

0.088

0.054

0.016

0.020

0.011

0.7

0.481

0.233

0.043

0.096

0.036

1.0

0.982

0.412

0.078

0.198

0.065

1.5

2.211

0.728

0.155

0.453

0.135

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