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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài:Vector-Sensor MUSIC for Polarized Seismic Sources Localization | EURASIP Journal on Applied Signal Processing 2005 1 74-84 2005 Hindawi Publishing Corporation Vector-Sensor MUSIC for Polarized Seismic Sources Localization Sebastian Miron Laboratoire des Images et des Signaux LIS 961 rue de la Houille Blanche BP 46 38402 Saint Martin d Heres Cedex France Email sebastian.miron@lis.inpg.fr Nicolas Le Bihan Laboratoire des Images et des Signaux LIS 961 rue de la Houille Blanche BP 46 38402 Saint Martin d Heres Cedex France Email nicolas.le-bihan@lis.inpg.fr Jerome I. Mars Laboratoire des Images et des Signaux LIS 961 rue de la Houille Blanche BP 46 38402 Saint Martin d Heres Cedex France Email jerome.mars@lis.inpg.fr Received 18 December 2003 Revised 7 June 2004 This paper addresses the problem of high-resolution polarized source detection and introduces a new eigenstructure-based algorithm that yields direction of arrival DOA and polarization estimates using a vector-sensor or multicomponent-sensor array. This method is based on separation of the observation space into signal and noise subspaces using fourth-order tensor decomposition. In geophysics in particular for reservoir acquisition and monitoring a set of Nx-multicomponent sensors is laid on the ground with constant distance Ax between them. Such a data acquisition scheme has intrinsically three modes time distance and components. The proposed method needs multilinear algebra in order to preserve data structure and avoid reorganization. The data is thus stored in tridimensional arrays rather than matrices. Higher-order eigenvalue decomposition HOEVD for fourthorder tensors is considered to achieve subspaces estimation and to compute the eigenelements. We propose a tensorial version of the MUSIC algorithm for a vector-sensor array allowing a joint estimation of DOA and signal polarization estimation. Performances of the proposed algorithm are evaluated. Keywords and phrases vector-sensor array vector MUSIC interspectral tensor higher-order eigenvalue decomposition for .
