Wavefield extraction using multi-channel chirplet decomposition
Résumé
In acoustical and seismic fields, wavefield extraction has always
been a crucial issue to solve inverse problem. Depending on the experimental
configuration, conventional methods of wavefield decomposition might no
longer likely to hold. In this paper, an original approach is proposed based on
a multichannel decomposition of the signal into a weighted sum of elementary
functions known as chirplets. Each chirplet is described by physical parameters
and the collection of chirplets makes up a large adaptable dictionary,
so that a chirplet corresponds unambiguously to one wave component
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