Optical frequency domain scattering distributed optical fiber sensing information recovery method based on wavelet transform

The invention discloses an optical frequency domain scattering distributed optical fiber sensing information recovery method based on wavelet transform, and belongs to the technical field of distributed optical fiber sensing. According to the method, wavelet transformation is used as a spatial/spectral domain analysis tool for distributed optical fiber sensing, corresponding relations between a wavelet scale and a spatial position and between a translation sequence and a spectral wavelength are established respectively, a wavelet transformation coefficient matrix is obtained through wavelet transformation, rows and columns of the matrix correspond to the spatial position and the spectral wavelength of sensing respectively, and the spatial position and the spectral wavelength of distributed optical fiber sensing are obtained. Reflectivity or scattering spectrum vectors are extracted according to positions, the reflectivity or scattering spectrum of each spatial sensing position of the optical fiber is obtained