Time-dependent wave splitting and source separation

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• 作者：Marcus J. Grote^a ; ^{marcus.grote@unibas.ch} ; Marie Kray^a ; ^{marie.kray@unibas.ch} ; Fré ; dé ; ric Nataf^b ; ^c ; ^d ; ^{nataf@ann.jussieu.fr} ; Franck Assous^e ; ^{franckassous55@gmail.com}
• 关键词：Time-dependent scattering ; Wave splitting ; Source separation ; Absorbing boundary conditions
• 刊名：Journal of Computational Physics
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：330
• 期：Complete
• 页码：981-996
• 全文大小：1662 K
• 卷排序：330

文摘

Starting from classical absorbing boundary conditions, we propose a method for the separation of time-dependent scattered wave fields due to multiple sources or obstacles. In contrast to previous techniques, our method is local in space and time, deterministic, and avoids a priori assumptions on the frequency spectrum of the signal. Numerical examples in two space dimensions illustrate the usefulness of wave splitting for time-dependent scattering problems.