摘要
The multiple signal classification method for direction-of-arrival estimation is widely applied in practical scenarios.However,the multiple signal classification method with planar array requires 2-dimensional on-grid spectrum searches,which would lead to the grid mismatch and high computational complexity.Therefore,a high-precision fast direction-of-arrival estimation method for planar array is proposed.In the proposed method,a 2-stage grid search approach over the 2-dimensional spectrum is firstly applied to obtain a quick coarse estimation of direction of arrival.Then,the estimation of higher precision is achieved via a quadratic surface fitting method.Simulation results verified the effectiveness of the proposed method.
