A nested wideband adaptive array using multirate filter banks
A nested wideband adaptive array using multirate filter banks
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.
952-16-1229-6
217-224
Koh, C L
8a2743b0-d7ca-435b-9861-cd1c3f9036a4
Weiss, S
a1716781-351d-41d2-8d67-3e3d34f16476
2004
Koh, C L
8a2743b0-d7ca-435b-9861-cd1c3f9036a4
Weiss, S
a1716781-351d-41d2-8d67-3e3d34f16476
Koh, C L and Weiss, S
(2004)
A nested wideband adaptive array using multirate filter banks.
International Workshop on Spectral Methods and Multirate Signal Processing, Vienna, Austria.
11 - 12 Sep 2004.
.
Record type:
Conference or Workshop Item
(Paper)
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.
More information
Published date: 2004
Additional Information:
Event Dates: September 11-12
Venue - Dates:
International Workshop on Spectral Methods and Multirate Signal Processing, Vienna, Austria, 2004-09-11 - 2004-09-12
Identifiers
Local EPrints ID: 259933
URI: http://eprints.soton.ac.uk/id/eprint/259933
ISBN: 952-16-1229-6
PURE UUID: 6673ffb4-fb82-45c9-a98c-d8b864ef38c2
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Date deposited: 13 Sep 2004
Last modified: 14 Mar 2024 06:29
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Contributors
Author:
C L Koh
Author:
S Weiss
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