| Autor: |
Greenberg, J. M, Gosse, Laurent |
| Rok vydání: |
2008 |
| Předmět: |
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| Zdroj: |
SIAM J. Sci. Comp. (2009) ?? |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1137/080734674 |
| Popis: |
In this paper we present algorithms for approximating real band-limited signals by multiple Gaussian Chirps. These algorithms do not rely on matching pursuit ideas. They are hierarchial and, at each stage, the number of terms in a given approximation depends only on the number of positive-valued maxima and negative-valued minima of a signed amplitude function characterizing part of the signal. Like the algorithms used in \cite{gre2} and unlike previous methods, our chirplet approximations require neither a complete dictionary of chirps nor complicated multi-dimensional searches to obtain suitable choices of chirp parameters. |
| Databáze: |
arXiv |
| Externí odkaz: |
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