Linear interference suppression for prestack seismic data based on curvelet transformation

Taking advantage of the characteristic of curvelet—multi-scale, locality, and directivity, a curvelet-based method for the suppression of linear interference in prestack seismic data is proposed. In this method, the seismic data is represented with curvelet by different frequencies and directors. By analyzing the curvelet coefficients, four different combinations between effective signal and linear interference are found. For the sake of reducing the damage of effective signal, a special solution is designed for each situation, according to the characteristic of the situation. It is shown from the simulation that with this method, the linear interference can be suppressed simply, rapidly and effectively, while minimizing the damage on effective signal.