Abstract
A novel approach to estimate spatial spectrum of multiple wide-band sources is proposed in this paper, which is termed signal-subspace spatial-spectrum estimator based on frequency domain model (SSEFD). Firstly, the noise-subspace frequency invariability of wide-band signals is proved by analyzing the eigenstructure of the covariance matrix of wide-band signals. The wide-band spatial spectrum is defined by the frequency invariability of noise subspace. Then a method based on Buckley's BASS-ALE is presented to solve frequency-direction ambiguity when applying new approach to a uniform linear array. At last, the performance of SSEFD is compared to that of Wang's CSS by computer simulation. The results show the superior of the new approach.
| Original language | English |
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| Pages | 415-418 |
| Number of pages | 4 |
| State | Published - 2004 |
| Event | 2004 7th International Conference on Signal Processing Proceedings (ICSP'04) - Beijing, China Duration: 31 Aug 2004 → 4 Sep 2004 |
Conference
| Conference | 2004 7th International Conference on Signal Processing Proceedings (ICSP'04) |
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| Country/Territory | China |
| City | Beijing |
| Period | 31/08/04 → 4/09/04 |
Keywords
- Frequency Domain Modeling
- Signal Subspace
- Spatial Spectrum Estimator
- Wide-Band Sources