A Nested Wideband Adaptive Array Using Multirate Filter Banks


Koh, C L and Weiss, S (2004) A Nested Wideband Adaptive Array Using Multirate Filter Banks. In, International Workshop on Spectral Methods and Multirate Signal Processing, Vienna, Austria, 11 - 12 Sep 2004. TICSP, 217-224.

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Description/Abstract

In this paper, we derived a generalised subband based scaled aperture (SSA) beamformer, exemplarily for the generalised sidelobe canceller (GSC). This structure is useful for broadband beamforming where near-constant spatial resolution over a wide range of frequencies is desired. The generalised SSA beamformer decomposes broadband signal into subbands, which are grouped into octave intervals. By drawing inputs from sensors with a wider aperture for lower octave bands, an octave-invariant resolution is achieved. We demonstrate that the SSA operates well across octave boundaries and additionally can benefit from an increase performance and reduced complexity when compared to similar subband and fullband domain beamforming structures.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Event Dates: September 11-12
ISBNs: 9521612296
ISSNs: 1456-2774
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science
ePrint ID: 259933
Date Deposited: 13 Sep 2004
Last Modified: 27 Mar 2014 20:02
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/259933

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