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DOA estimation of rectilinear signals with a partly calibrated uniform linear array

Huang, H. ; Liao, B. ; Guo, X. ; Huang, J. :
DOA estimation of rectilinear signals with a partly calibrated uniform linear array.
[Online-Edition: http://www.sciencedirect.com/science/article/pii/S0165168418...]
In: Signal Processing, 147 203 - 207. ISSN 0165-1684
[Artikel] , (2018)

Offizielle URL: http://www.sciencedirect.com/science/article/pii/S0165168418...

Kurzbeschreibung (Abstract)

This paper investigates the problem of direction-of-arrival (DOA) estimation of rectilinear or strictly second-order noncircular signals with a partly calibrated uniform linear array (ULA). Consider that the uncalibrated portion of the array suffers from unknown gains and phases, an extended data model corresponding to a virtual (extended) array is presented by taking the noncircularity of the signals into account. On this basis and given the signal subspace matrix associated with the virtual array, a linear equation is derived to determine the unknown gains and phases. Then, the DOAs are found through the eigenvalue decomposition of a matrix related to the signal subspace matrix and array gains and phases. Since spatial spectrum search is not required, the proposed method is computationally efficient. Moreover, it is able to handle at most 2M−3 rectilinear signals with a partly calibrated ULA of M elements, even though only two neighboring elements of the array are calibrated. Numerical results also demonstrate that the proposed method has remarkable performance superiority brought by the rectilinearity.

Typ des Eintrags: Artikel
Erschienen: 2018
Autor(en): Huang, H. ; Liao, B. ; Guo, X. ; Huang, J.
Titel: DOA estimation of rectilinear signals with a partly calibrated uniform linear array
Sprache: Deutsch
Kurzbeschreibung (Abstract):

This paper investigates the problem of direction-of-arrival (DOA) estimation of rectilinear or strictly second-order noncircular signals with a partly calibrated uniform linear array (ULA). Consider that the uncalibrated portion of the array suffers from unknown gains and phases, an extended data model corresponding to a virtual (extended) array is presented by taking the noncircularity of the signals into account. On this basis and given the signal subspace matrix associated with the virtual array, a linear equation is derived to determine the unknown gains and phases. Then, the DOAs are found through the eigenvalue decomposition of a matrix related to the signal subspace matrix and array gains and phases. Since spatial spectrum search is not required, the proposed method is computationally efficient. Moreover, it is able to handle at most 2M−3 rectilinear signals with a partly calibrated ULA of M elements, even though only two neighboring elements of the array are calibrated. Numerical results also demonstrate that the proposed method has remarkable performance superiority brought by the rectilinearity.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Signal Processing
Band: 147
Freie Schlagworte: Direction-of-arrival (DOA), Rectilinear signal, Uniform linear array, Partly calibrated array
Fachbereich(e)/-gebiet(e): 18 Fachbereich Elektrotechnik und Informationstechnik
18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Nachrichtentechnik
18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Nachrichtentechnik > Signalverarbeitung
Hinterlegungsdatum: 05 Dez 2018 13:46
DOI: https://doi.org/10.1016/j.sigpro.2018.01.024
Offizielle URL: http://www.sciencedirect.com/science/article/pii/S0165168418...
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