Integrated Method of Multi-Target Detection and DOA Estimation by Exploiting Knowledge of Beam-Spectra Envelope
Qunfei Zhang · Dianzi xuebao · 2009
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 3dB-width information of spectral peaks is used further to detect the source number in each peak,and the DOAs are estimated by 2D 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.