RESEARCH AND APPLICATION OF IMPROVED HIGH PRECISION MATCHING PURSUIT METHOD

Abstract

Based on conventional matching pursuit (MP) algorithm, an improved approach of MP is presented in this paper. By introducing a new strategy of building complete library, the Ricker wavelet was taken as atoms and the maximum correlation of original seismic data was used to estimate the location and atomic energy of complete library. The decomposition precision was increased further through the method so that the adaptability of the algorithm was greatly improved. To avoid the atomic spacing being too small, the smallest atomic spacing was introduced, so the decomposition efficiency and quality were further improved. Model trial and application of practical data showed that not only the quality of the signal sparse representation through the algorithm was improved and the convergence speed was accelerated, but also the adaptability and decomposition precision of the algorithm were enhanced. Effective seismic information can be obtained better and the precision of seismic interpretation can be improved by the method.