Abstract
In this paper, we present a new method for wideband direction-of-arrival (DOA) estimation, based on spatially interpolated wideband beamformer (SIWB). The SIWB is designed to have frequency-invariant beam-response, prescribed main beamwidth and prescribed sidelo-be level within a wide signal bandwidth. For wideband DOA estimation, the SIWB's can be used as spatial pre-processors transforming the wideband signals at the outputs of antenna array (element-space) into the beam-space signals prior to applying narrowband DOA estimation. The new SIWB-based method enhances the resolution of spectral estimation and reducing root-mean-square error of DOA estimation without increasing number of array elements. Furthermore, the proposed method is applicable for DOA estimation of coherent sources without preliminary DOA estimates. The performance of the proposed method in comparison with the conventional methods is illustrated in simulation results.
| Original language | English |
|---|---|
| Pages (from-to) | 2647-2650 |
| Number of pages | 4 |
| Journal | IEEE Antennas and Propagation Society, AP-S International Symposium (Digest) |
| Volume | 3 |
| State | Published - 2004 |
| Event | IEEE Antennas and Propagation Society Symposium 2004 Digest held in Conjunction with: USNC/URSI National Radio Science Meeting - Monterey, CA, United States Duration: 20 Jun 2004 → 25 Jun 2004 |
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