Abstract
This paper proposes a new subspace-based algorithm to jointly estimate the frequencies, directions of arrival (DOAs), and ranges of multiple near-field narrow-band sources. Firstly, the proposed method constructs four cumulant matrices by virtue of the fourth-order cumulants of some properly chosen sensor outputs; secondly, by using the above-mentioned four matrices, it forms three new ones, from whose eigenvalues the source parameters can be easily obtained. In comparison with some available cumulant-based methods, the proposed algorithm can make efficient use of the array aperture, and thus has a higher estimation accuracy. Simulation results also show that the proposed method is of such performance.
Original language | English |
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Pages (from-to) | 839-843 |
Number of pages | 5 |
Journal | Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University |
Volume | 34 |
Issue number | 5 |
State | Published - Oct 2007 |
Keywords
- Array signal processing
- Cumulant
- Near-field source localization
- Subspace