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Numerical microlocal analysis of harmonic wavefields
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DOI：10.1016/j.jcp.2004.03.014.png)
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Abstract
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We present and test a numerical method which, given an analytical or numerical solution of the Helmholtz equation in a neighborhood of a fixed observation point and assuming that the geometrical optics approximation is relevant, determines at this point the number of crossing rays and computes their directions and associated complex amplitudes. (C) 2004 Elsevier Inc. All rights reserved.
Keywords:
geometrical optics
microlocal analysis
Helmholtz equation
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