Automatic extraction method and system for surface wave frequency dispersion curve, and storage medium

Abstract

The invention relates to the technical field of seismic detection, in particular to a surface wave frequency dispersion curve automatic extraction method and system and a storage medium. According to the surface wave frequency dispersion curve automatic extraction method provided by the invention, data point partitioning is performed on a surface wave frequency dispersion energy diagram based on data point extraction and clustering, then a central point in each region is extracted as a pick-up point through a mean value taking mode, and a frequency dispersion curve is constructed based on the pick-up point. The method breaks the current cognition of screening the frequency scatter points based on the principle of maximum energy, comprehensively considers the speed, energy and frequency to cluster the frequency scatter points, achieves the recognition of an energy concentration region mode, then extracts the frequency scatter points based on the clustering result, can accurately capture local features, avoids manual operation errors, and greatly improves the extraction precision of the frequency scatter points. The consistency and stability of extraction rules of frequency dispersion points in different areas are guaranteed, the height generality of a frequency dispersion curve to a surface wave frequency dispersion energy diagram is guaranteed, and high-precision and high-efficiency extraction of the frequency dispersion curve is guaranteed.