A new Method for Range and DOA Estimation of Near-Field Sources
一种新的近场源距离及到达角联合估计算法

A new method based on third-order cyclic moment is presented for joint estimation of Directions-Of-Arrival (DOA’s) and range of near-field sources. By exploiting the cyclostationarity and space-time information of the signals, the parameters are directly given by the eigendecomposition of certain constructed DOA-matrix. Compared with several existing approaches, the loss of array aperture is voided since the proposed method doesn’t need a symmetrical array. Moreover, the proposed method can effectively suppress the additive stationary noises with any distribution and interfering signals with different cyclic frequency, and the parameters match automatically in the process. Some numerical simulations illustrate the effectiveness of the proposed algorithm.