The University of Southampton
University of Southampton Institutional Repository

Frequency Invariant Beamforming in Subbands

Frequency Invariant Beamforming in Subbands
Frequency Invariant Beamforming in Subbands
In this paper, two subband implementations of a frequency invariant beamformer (FIB) are studied. In the first structure, the received array signals are split into subbands and an FIB is operated in each of the corresponding decimated subbands, with a potential of achieving a lower computational complexity. As the spatio-temporal distributionof the subband signals is different from the original fullband signal, a modified design method of the FIB is proposed. Based on the subband implementation, we then change the sensor spacings of different subband signals so that lower frequency bands have a larger spacing, which results in a class of FIBs with scaled aperture with improved performance in lower frequencies. Several design examples are given to show the performance of our new structures.
Liu, W
622f6d44-225b-4d4e-9ed9-839e234e7163
Weiss, S
a1716781-351d-41d2-8d67-3e3d34f16476
Liu, W
622f6d44-225b-4d4e-9ed9-839e234e7163
Weiss, S
a1716781-351d-41d2-8d67-3e3d34f16476

Liu, W and Weiss, S (2004) Frequency Invariant Beamforming in Subbands. 38th Asilomar Conference on Signals, Systems, and Computers. 07 - 10 Nov 2004.

Record type: Conference or Workshop Item (Paper)

Abstract

In this paper, two subband implementations of a frequency invariant beamformer (FIB) are studied. In the first structure, the received array signals are split into subbands and an FIB is operated in each of the corresponding decimated subbands, with a potential of achieving a lower computational complexity. As the spatio-temporal distributionof the subband signals is different from the original fullband signal, a modified design method of the FIB is proposed. Based on the subband implementation, we then change the sensor spacings of different subband signals so that lower frequency bands have a larger spacing, which results in a class of FIBs with scaled aperture with improved performance in lower frequencies. Several design examples are given to show the performance of our new structures.

Text
liu04g.pdf - Other
Download (1MB)

More information

Published date: 2004
Additional Information: Event Dates: 7-10 November
Venue - Dates: 38th Asilomar Conference on Signals, Systems, and Computers, 2004-11-07 - 2004-11-10
Organisations: Electronics & Computer Science

Identifiers

Local EPrints ID: 260150
URI: http://eprints.soton.ac.uk/id/eprint/260150
PURE UUID: 78d65140-d9a4-4570-aefb-b9ea2074b672

Catalogue record

Date deposited: 26 Nov 2004
Last modified: 09 Dec 2019 20:15

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×