Figure 1.
WorkingPrinciple of Fiber Grating Sensing
Figure 2.
Diagram of decomposition and reconstruction of fiber Bragg grating signals
Figure 3.
Subband division of direction filter
Figure 4.
The signal of fiber grating sensor with noise
Figure 5.
The denoising results of fiber Bragg grating sensor in contour wave transform
Table I.
COMPARES THE PERFORMANCE OF THE CLASSICAL RASTER SENSING SIGNAL DE-NOISING METHOD
| Denoising method | PSNR | MSE |
|---|---|---|
| The wavelet transform | 20.33 | 8.00 |
| The literature[17] | 22.19 | 7.72 |
| Contour wave transform | 24.73 | 7.24 |