吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (6): 2080-2086.doi: 10.13229/j.cnki.jdxbgxb201606043

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Hardware system realizable method for multi-frequency near-field source localization

SUN Xiao-ying, LIU Zhuang, QIN Yu-di, LIU Yan-yan   

  1. College of Communication Engineering, Jilin University, Changchun 130022, China
  • Received:2015-09-08 Online:2016-11-20 Published:2016-11-20

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Abstract:

Based on the orthogonality between signal subspace and noise subspace, a new estimation algorithm of Direction-of-arrival (DOA) and range suitable for multi-frequency near-field source localization is proposed. By applying orthogonal transformation to the received data of transducers, a complex observation matrix is required. The eigenvalues and eigenvectors of the complex covariance matrix are computed using similarity transformation method of eigenvalue decomposition, and then the noise subspace is established. Considering the frequency spectrum of source signals, a suitable spectral function is constructed for multi-frequency signals to search for the locations of sources. The proposed method increases the applicability of localization system to multi-frequency sources. The actual localization system simulation results show the efficacy of the proposed method.

Key words: communication, array signal processing, near-field source localization, multi-frequency signal, system realization

CLC Number: 

  • TN911.72
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