Abstract
An integrated method of acoustic signal detection and direction-of-arrival (DOA) estimation is proposed. As exploiting the beam-spectra envelop (BE) knowledge of the spatial spectrum outputted by beam scanning system, it is named as BE method, in which, based on the results of energy detection, the 3 dB-width information of spectral peaks is used further to detect the source number in each peak, and the DOAs are estimated by 2-D Capon searching. The Qiandao Lake experimental results show that, comparing with traditional algorithms, the performance of target detection and DOA estimation is improved at lower SNRs.
| Original language | English |
|---|---|
| Pages (from-to) | 2823-2828 |
| Number of pages | 6 |
| Journal | Tien Tzu Hsueh Pao/Acta Electronica Sinica |
| Volume | 37 |
| Issue number | 12 |
| State | Published - Dec 2009 |
Keywords
- Acoustic signal processing
- Direction-of-arrival estimation
- High resolution
- Multi-target detection
- Source number estimation