Wideband doa estimation for nonuniform linear arrays with wiener array interpolation

Date

2008-07-23

Author

Yasar, T. Kaya
Tuncer, Temel Engin

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Coherent wideband DOA estimation for non-uniform linear arrays (NLA) is considered. Array interpolation is used for two mappings. In the first mapping, NLA is mapped to a uniform linear array with the same array aperture. In the second mapping covariance matrices for each frequency bin are mapped to a single one at the center frequency for coherent DOA estimation. A Wiener formulation is used for array interpolation where both signal and noise powers are estimated with maximum likelihood method. Different approaches are compared and the advantages of wideband processing versus narrowband processing are outlined. The accuracy of the SNR estimation is high and it is shown that Wiener array interpolation significantly improves the DOA estimation performance in both narrowband and wideband

Subject Keywords

Interpolation , Wideband, Direction of arrival estimation, Covariance matrix, Signal to noise ratio, Array signal processing, Estimation

URI

https://hdl.handle.net/11511/47376

DOI

https://doi.org/10.1109/sam.2008.4606856

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

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Citation Formats

T. K. Yasar and T. E. Tuncer, “Wideband doa estimation for nonuniform linear arrays with wiener array interpolation,” 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47376.