The invention discloses a
magnetic anomaly data de-noising method and de-noising
system based on step-by-step U-Net, and relates to the technical field of geophysical exploration, and the method comprises the steps: carrying out the forward modeling calculation based on a
magnetic anomaly model in a
simulation region, and obtaining a synthetic
magnetic anomaly data set; a U-Net step-by-step denoising
network model is constructed; designing a self-adaptive multi-stage training
mechanism based on
mean square error minimization; training the U-Net step-by-step denoising
network model through the
training set, taking parameters of the U-Net step-by-step denoising
network model as initial weights, and performing
fine tuning on the U-Net step-by-step denoising network model by utilizing
supervised learning; the
verification set is used for verifying the effect, and the effectiveness of the whole step-by-step denoising network model is verified according to the prediction effect of the
test set; a forward
noise adding process and a reverse
noise removing process are designed, network behaviors are automatically adjusted according to
noise steps, the problems of high training cost and poor performance when a
deep learning model processes
colored noise are effectively solved, and the problem of low
signal-to-noise ratio is better solved.