Low-rank difraction separation using an improved MSSA algorithm

Lin, Peng; Zhao, Jingtao; Peng, Suping

doi:10.1007/s11600-021-00642-1

Artykuł - szczegóły

Tytuł artykułu

Low-rank difraction separation using an improved MSSA algorithm

Autorzy

Lin Peng , Zhao Jingtao , Peng Suping

Wybrane pełne teksty z tego czasopisma

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

Identyfikatory

DOI

10.1007/s11600-021-00642-1

Warianty tytułu

Języki publikacji

Abstrakty

Diffraction separation is a vital key step for high-resolution imaging of small-scale geologic discontinuities. The multichannel singular-spectrum analysis (MSSA) algorithm has exhibited adequacy for diffraction separation and refection suppression. However, the traditional MSSA algorithm is expensive because of the singular-value decomposition (SVD) operator. In addition, the common rank misidentification renders the diffraction separation highly rank-sensitive. Random noise caused by energy leakage is another problem for diffraction separation that is unresolved by the conventional MSSA. In this study, we propose a prestack diffraction separation method involving an improved MSSA algorithm. The new algorithm enables faster singular value estimation relative to the conventional SVD, with a diagonal Hankelization operator for artificial linear and random noise suppression, thereby enhancing the signal-to-noise ratio. Rank misidentification is alleviated by lowering the sensitivity to rank of the separated diffractions. Synthetic and field data are utilized to demonstrate the feasibility and superiority of the proposed method in computational efficiency and noise suppression compared with the conventional method.

Słowa kluczowe

MSSA difraction separation randomized SVD diagonal Hankelization

MSSA

Wydawca

Instytut Geofizyki PAN
Springer

Czasopismo

Acta Geophysica

Rocznik

2021

Tom

Vol. 69, no. 5

Strony

1651--1665

Opis fizyczny

Bibliogr. 61 poz.

Twórcy

autor

Lin Peng

State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing 100083, China

autor

Zhao Jingtao

difzjt@163.com

State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing 100083, China

autor

Peng Suping

State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing 100083, China

Bibliografia

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Typ dokumentu

Bibliografia

Identyfikator YADDA

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