Wavelet denoising method and system for SAR image and electronic equipment

The invention discloses a wavelet denoising method and system for an SAR image and electronic equipment, and relates to the technical field of remote sensing image processing, and the method comprises the steps: determining a wavelet and a wavelet decomposition level, and calculating a wavelet coefficient matrix obtained after the wavelet decomposition of a to-be-processed SAR image; based on a preset adaptive threshold estimation function, determining an initial adaptive threshold and a corresponding estimated wavelet coefficient matrix according to the wavelet coefficient matrix; when any wavelet coefficient is smaller than the initial self-adaptive threshold value, the wavelet coefficients are removed; when any wavelet coefficient is greater than or equal to an initial adaptive threshold value, constructing a risk function based on the wavelet coefficients and the estimated wavelet coefficient matrix; performing minimization calculation on the risk function based on a minimization maximum estimation criter