This invention discloses a natural
electric field source inversion method based on a
genetic algorithm, belonging to the field of
geophysical inversion technology. It solves the technical problems of low inversion accuracy and large source location errors in natural
electric field inversion caused by optimization algorithms. The key points of the technical solution are: first, expanding the input electrical resistivity data using head-to-
tail cross-interpolation; second, using the extreme values and dispersion of the electrical resistivity data as the center and
radius of the
population distribution area; third, forming a
population by describing individuals based on the number and location of source sources; and finally, using a
genetic algorithm based on double-threshold cross-iteration to achieve natural
electric field source inversion with smaller source fitting errors. This application can effectively utilize a small amount of input electrical resistivity data, reasonably expand and extract extreme value features, and largely solve the problems of large inversion fluctuations caused by large spatial areas,
small data volumes, and the inherent multiple solutions in
geophysical inversion, while achieving smaller source fitting errors.