Direction of Arrival Estimation Using Fourth Order Cyclic Cumulation
Lina Wei · Modern Electronics Technique · 2006
In this paper,a new estimation algorithm is presented.The algorithm constructs a new matrix called(DOA-Matrix)to estimate the DOA.The theoretical analysis shows direction of arrival is estimated using the cyclic cumulative matrix.The algorithms are nulled out cyclic correlation of stationary additive noise and all other interferences with different cyclic frequencies.For coherent sources caused by multipath,we utlilze a special forward/back averaging method appropriate for uniform linear array .It is shown through simulations that the proposed method is able to handle more sources with fewer sensors and efficiently solves uncorrelated signals.