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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Wei Liu Weiss, S. |
| Copyright Year | 2004 |
| Description | Author affiliation: Dept. of Electr. & Electron. Eng., Imperial Coll. London, UK (Wei Liu) |
| 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 distribution of 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. |
| Starting Page | 1968 |
| Ending Page | 1972 |
| File Size | 1566368 |
| Page Count | 5 |
| File Format | |
| ISBN | 0780386221 |
| DOI | 10.1109/ACSSC.2004.1399508 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-11-07 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Frequency Array signal processing Design methodology Filter bank Computational complexity Computer science Educational institutions Apertures Sonar applications Radar applications |
| Content Type | Text |
| Resource Type | Article |
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