The invention provides an optical
frequency domain reflectometer
image signal denoising method and measurement method based on
deconvolution. The denoising method comprises the following steps: converting reference and measurement signals of an OFDR (Optical
Frequency Domain Reflectometer) into distance domain reference signals and measurement signals by adopting FFT (
Fast Fourier Transform); dividing a scattering medium for measurement into a plurality of sections according to the spatial resolution of the OFDR, and converting distance domain reference and measurement signals of each section into
time domain reference and measurement signals by adopting STFT (
Short Time Fourier Transform); calculating a cross-
correlation spectrum curve of each segment of corresponding
time domain reference and measurement signals to obtain a cross-correlation two-dimensional image; autocorrelation is carried out on the
time domain reference
signal of each segment, and an autocorrelation two-dimensional image is obtained; taking a
main lobe, corresponding to a cross-correlation peak, of each section in the cross-correlation two-dimensional image as a
wavelength interception range of the section, and intercepting an image located in the
wavelength interception range of the section from each section of the self-correlation two-dimensional image as a
point spread function (PSF); and de-noising the cross-correlation two-dimensional image by adopting
deconvolution according to the PSF. According to the invention, the problem that the OFDR cannot carry out
image signal denoising based on
deconvolution is solved.