An Improved Pseudomulti-channel Matching Method for Multiples Adaptive Subtraction

Summary This paper is aimed at improving the multiples adaptive subtraction. We put forward an adaptive pseudomulti-channel matching method based on L1-norm minimum energy criterion, and utilize the second derivative of the predicted multiple channel to replace the derivative of its Hilbert transform. Due to the addition term of 1/((−ω)), this method can adjust and match the frequency differences between predicted multiples and original ones. Meanwhile, 180° phase rotation of the multiple channel is inputted, which can decrease phase differences. This method here is available to improve the matching and subtracting in the application of Deflt model. We also apply it to a series of field marine seismic data, and the results demonstrate the method is effective.