full-wave nuclear magnetic resonance signal noise filtering method for optimizing matching pursuit through a genetic algorithm

The invention relates to a full-wave nuclear magnetic resonance signal noise filtering method for optimizing matching pursuit by a genetic algorithm, which is mainly used for processing power frequency harmonic interference and random noise in a full-wave nuclear magnetic resonance signal. The method comprises the steps that firstly, preprocessing MRS signals collected by a nuclear magnetic resonance sounding water exploration instrument in a band-pass filtering mode, and acquiring power frequency harmonic interference contained in the signals and the frequency of the MRS signals through spectrum analysis; Secondly, establishing two atomic libraries for MRS signal characteristics and power frequency harmonic interference characteristics, adopting a genetic algorithm to optimize a matchingpursuit algorithm, searching power frequency harmonic atoms in the harmonic atomic library to reconstruct power frequency harmonics, and subtracting the power frequency harmonics from original noisy signals; And finally, sear