Noise processing method for signals processed by WMS

The invention provides a noise processing method for signals after WMS processing. The noise processing method comprises the following steps that noise signals in second harmonic signals are processed; reconstructing the second harmonic signal; carrying out multiple iterations on noise signals in the second harmonic signals; after the secondary harmonic signal is obtained, a residual error is calculated; compared with a traditional denoising method, in the denoising process of the L1R sparse processing method, a successive iteration method is introduced, successive denoising processing is carried out on the second harmonic signal containing the noise signal, the noise signal in the second harmonic signal is effectively removed, a threshold value shrinkage method is matched, a fixed iteration threshold value is not given, and the denoising effect is good. The threshold value is automatically adjusted according to the signal denoising process, and the noise signal in the second harmonic is removed to the maximu