摘要
Direction of arrival(DOA)estimation is one of the key technologies in smart antennas in the direct sequence ultra wideband(DS-UWB)system.Traditional DOA estimation methods based on narrow-band signals are not suitable for such system.Therefore,a fourth-order cumulant-based estimation method of DOA for DS-UWB signal is proposed.This method is set on the frequency domain model of DS-UWB array signal.Simulation results show that the algorithm is effective and can guarantee adequate estimation accuracy.
