A nested wideband adaptive array using multirate filter banks

C.L. Koh, S. Weiss

Research output: Contribution to conferencePaperpeer-review

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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.
Original languageEnglish
Pages217-224
Number of pages8
Publication statusPublished - Sep 2004
EventInternational Workshop on Spectral Methods and Multirate Signal Processing - Vienna, Austria
Duration: 11 Sep 200412 Sep 2004

Conference

ConferenceInternational Workshop on Spectral Methods and Multirate Signal Processing
Abbreviated titleSMMSP 2004
Country/TerritoryAustria
CityVienna
Period11/09/0412/09/04

Keywords

  • nested wideband
  • adaptive array
  • multirate filter banks

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