Suppressing multiples using an adaptive multichannel filter based on L1-norm

Shi, Y.; Jing, H.; Zhang, W.; Ning, D.

doi:10.1007/s11600-017-0053-6

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Tytuł artykułu

Suppressing multiples using an adaptive multichannel filter based on L1-norm

Autorzy

Shi Y. , Jing H. , Zhang W. , Ning D.

Wybrane pełne teksty z tego czasopisma

https://www.springer.com/journal/11600

Identyfikatory

DOI

10.1007/s11600-017-0053-6

Warianty tytułu

Języki publikacji

Abstrakty

Adaptive subtraction is an important link for removing surface-related multiples in the wave equation-based method. In this paper, we propose an adaptive multichannel subtraction method based on the L1-norm. We achieve enhanced compensation for the mismatch between the input seismogram and the predicted multiples in terms of the amplitude, phase, frequency band, and travel time. Unlike the conventional L2-norm, the proposed method does not rely on the assumption that the primary and the multiples are orthogonal, and also takes advantage of the fact that the L1-norm is more robust when dealing with outliers. In addition, we propose a frequency band extension via modulation to reconstruct the high frequencies to compensate for the frequency misalignment. We present a parallel computing scheme to accelerate the subtraction algorithm on graphic processing units (GPUs), which significantly reduces the computational cost. The synthetic and field seismic data tests show that the proposed method effectively suppresses the multiples.

Słowa kluczowe

adaptive subtraction frequency band extension graphic processing unit L1-norm multichannel

odejmowanie adaptacyjne rozszerzenie pasma częstotliwości jednostka przetwarzania grafiki norma L1 multikanał

Wydawca

Instytut Geofizyki PAN
Springer

Czasopismo

Acta Geophysica

Rocznik

2017

Tom

Vol. 65, no. 4

Strony

667--681

Opis fizyczny

Bibliogr. 44 poz.

Twórcy

autor

Shi Y.

shiying@nepu.edu.cn

School of Earth Science, Northeast Petroleum University, Daqing, China
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, China

autor

Jing H.

Tuha Division, BGP Incorporation, China National Petroleum Corporation, Hami, China

autor

Zhang W.

School of Earth Science, Northeast Petroleum University, Daqing, China

autor

Ning D.

State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, China

Bibliografia

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Bibliografia

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