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Implementation of accurate broadband steering vectors for broadband angle of arrival estimation

Alrmah, Mohamed Abubaker and Weiss, Stephan and McWhirter, John G. (2013) Implementation of accurate broadband steering vectors for broadband angle of arrival estimation. In: IET Intelligent Signal Processing Conference, 2013-12-02 - 2013-12-03.

isp13_3.pdf - Accepted Author Manuscript

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Motivated by accurate broadband steering vector requirements for applications such as broadband angle of arrival estimation, we review fractional delay filter designs. A common feature across these are their rapidly decreasing performance as the Nyquist rate is approached. We propose a filter bank based approach, which operates standard fractional delay filters on a series of frequency-shifted subband signals, such that they appear in the filters’ lowpass region. We demonstrate the appeal of this approach in simulations.