1 - L'identification de fronts d'ondes corrélés et distordus

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dc.contributor.author MUNIER (J.) en_US
dc.date.accessioned 2005-07-20T12:51:29Z
dc.date.available 2005-07-20T12:51:29Z
dc.date.issued 1987 en_US
dc.identifier.citation Traitement du Signal [Trait. Signal], 1987, Vol. 4, N° 4, p. 281-296 en_US
dc.identifier.issn 0765-0019 en_US
dc.identifier.uri http://hdl.handle.net/2042/1634
dc.description Over the past 2 decades, the spatial analysis methods developed were based upon restricting hypotheses that are not fulfilled in practical cases and, therefore, often yield disappointing results . This is particularly true when uncorrelated sources, plane wavefronts and identical sensors hypotheses are introduced . In a classical approach, source parameters estimates are obtained using the information contained in the eigenvalues and eigenvectors of the received signais cross-spectral matrix . Making use of the properties of this matrix, an alternate version of the eigensystem method based upon the linear dependency between the source-matrix rows is shown to exist . A deep insight into the causes of performance loss clearly shows an interest for an estimation as compiete as possible of the distorted wavefronts . Letting the modules of the sources-vectors elements being equal, a new algorithm which permits the estimation of their phases is finally adressed .
dc.description.abstract On montre qu'il existe une variante de la méthode des éléments propres, fondée sur la relation de dépendance linéaire existant entre les lignes de la matrice-sources en_US
dc.format.extent 51964 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.publisher GRETSI, Saint Martin d'Hères, France en_US
dc.relation.ispartofseries Traitement du Signal
dc.rights http://irevues.inist.fr/utilisation en_US
dc.source Traitement du Signal [Trait. Signal], ISSN 0765-0019, 1987, Vol. 4, N° 4, p. 281-296 en_US
dc.subject.cnrs Traitement signal en_US
dc.subject.cnrs Signal acoustique en_US
dc.subject.cnrs Antenne acoustique en_US
dc.subject.cnrs Analyse spatiale en_US
dc.subject.cnrs Onde acoustique en_US
dc.subject.cnrs Front onde en_US
dc.subject.cnrs Distorsion signal en_US
dc.subject.cnrs Source sonore en_US
dc.subject.cnrs Matrice interspectrale en_US
dc.subject.cnrs Source corrélée en_US
dc.title 1 - L'identification de fronts d'ondes corrélés et distordus en_US
dc.title.alternative Identification of correlated and distorted wavefronts
dc.type Article en_US
dc.contributor.affiliation Ecole nationale supérieure ing. électriciens Grenoble, cent. études phénomènes géophysiques, Saint Martin d'Hères 38402 en_US

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