New Method for 2-D DOA Estimation of Coherent Signals Based on Fourth-Order Cumulant
Gang Du · Modern Defence Technology · 2008
Based on fourth-order cumulant,a new method is presented,i.e. CSS algorithm,for 2-D direction of arrival(DOA) estimation of coherent signals.Firstly the smoothed DOA matrix is constructed by the received data of two uniform parallel linear arrays and the smoothing technique,and then 2-D arrival angles of coherent signals can be obtained from its eigenvalues and the corresponding eigenvectors.In colored Gaussian noises,the algorithm can precisely estimate 2-D arrival angles of coherent signals,and doesn′t need spectrum peak search with 2-D parameters paired automatically.Computer simulation confirms its effectiveness.