Harmonic suppression method and system

• Main Authors: LI HONGJIAN, LIU DINGJIN
• Format: Patent
• Language: Chinese; English
• Published: 03.05.2022
• Subjects: DETECTING MASSES OR OBJECTS; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; MEASURING; PHYSICS; TESTING

The invention provides a harmonic suppression method and system, and belongs to the field of vibroseis excitation seismic data processing. According to the harmonic suppression method, a harmonic component of a seismic source signal is estimated by using a harmonic weight factor, harmonic noise is predicted, and then the harmonic noise is subtracted from original related seismic data by using an adaptive subtraction algorithm to obtain seismic data without the harmonic noise. According to the method, firstly, a high-precision harmonic prediction filtering operator is constructed for an effective signal and harmonic distortion difference, noise and the signal are effectively distinguished and separated, and an adaptive subtraction algorithm is adopted, so that the damage to the effective signal caused by a poor harmonic suppression effect under the condition of inaccurate noise estimation is avoided; therefore, effective signals are protected to the greatest extent. 本发明提供了一种谐波压制方法及系统，属于可控震源激发地震资料数据处理领域。所述谐波压制方