A New Joint Estimation Approach for Time Delays,DOAs and Doppler Shifts

For estimation of the time delays,DOAs and Doppler shifts of multipath reflections in the limitations of one- dimensional and two- dimensional algorithm,an array signal model is developed based on the repetitive characteristic of the transmitted signal,which has the rotational invariance property. The PRO-ESPRIT algorithm is applied to this signal model,and the respective Doppler shifts,time delays and DOAs are estimated from the rotational invariance factors and corresponding eigenvectors. The computer simulations validate the availability of this approach.