Frequency Invariant Beamforming in Subbands
Liu, W and Weiss, S (2004) Frequency Invariant Beamforming in Subbands. In, 38th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, 07 - 10 Nov 2004.
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Description/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.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Additional Information: | Event Dates: 7-10 November |
| Divisions: | Faculty of Physical and Applied Science > Electronics and Computer Science |
| Item ID: | 260150 |
| Date Deposited: | 26 Nov 2004 |
| Last Modified: | 02 Mar 2012 01:49 |
| Contributors: | Liu, W (Author) Weiss, S (Author) |
| Date: | 2004 |
| Additional Information: | Event Dates: 7-10 November |
| Status: | Published |
| Further Information: | Google Scholar |
| URI: | http://eprints.soton.ac.uk/id/eprint/260150 |
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