Simultaneous estimation of time-delay and bearing of multiple underwater reflectors

In this paper, a new extended ESPRIT method is presented. With a single echo wave, both time delay and DOA parameters of multiple reflectors are estimated simultaneously. No additional pairing algorithm is involved to get the reflector locations. The performance of estimators and the probability of correct pairing is given by computer simulations. It shows that an acceptable result of multiple reflectors location can be obtained in 5~8 dB SNR.