Novel method of narrow band signal frequency and 2D angle estimation for wide band receiver

For the problem of the frequency and 2D direction of arrive (DOA) united estimation of narrow band signal for wide band receiver, a novel quick method is proposed. First, the pre-estimation is used to get the pre-estimating DOA with reference frequency, then the space filtering method is used to make the match of the signal pre-estimating DOA with its frequency, and the corresponding frequency is used to adjust the pre-estimating DOA according to the characteristic of the antenna configuration, therefore, the precise signal frequency and its DOA are obtained at the same time. The last simulation indicates that the proposed method is correct and effective to estimate the frequency and DOA of narrow signal for wide band receiver.