Abstract：The strong single frequency interference around 50Hz has been always the study object in seismic data processing.The current software modules which are used to suppress 50Hz strong single frequency interference have some defects,such as low efficiency,large time-consuming during the calculation and being harmful to effective signals and so on.The cosine function adaptive algorithm which can be used to fast estimate the single frequency interference frequency was proposed in this paper.The time delay and the amplitude of the single frequency were calculated directly using time delay adaptive formula and amplitude formula respectively.The method is harmless for the nearby effective signals and can raise the signal to noise ratio of the data around the single frequency interference.With this method the frequency of the single interference can be fast estimated and the target of suppression of such interference was reached.The trial calculation results for the synthetic data and field data showed the effectiveness and feasibility of the method.
高少武, 赵波, 祝树云, 罗国安, 贺振华. 余弦函数自适应法识别与消除单频干扰[J]. 石油地球物理勘探, 2011, 46(1): 64-69.
Gao Shao-wu, Zhao Bo, Zhu Shu-yun, Luo Guo-an, He Zhen-hua. Identification and suppression of single frequency interference by using cosine function adaptive method. OGP, 2011, 46(1): 64-69.
