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Novel algorithm on DOA estimation for correlated sources under complex symmetric Toeplitz noise

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3 Author(s)
Kai, Wang ; Missile Inst. Air Force Engineering Univ., Sanyuan 713800, P. R. China ; Yongshun, Zhang ; Dan, Shi

To cope with the scenario where both uncorrelated sources and coherent sources coexist, a novel algorithm to direction of arrival (DOA) estimation for symmetric uniform linear array is presented. Under the condition of stationary colored noise field, the algorithm employs a spatial differencing method to eliminate the noise covariance matrix and uncorrelated sources, then a Toeplitz matrix is constructed for the remained coherent sources. After preprocessing, a propagator method (PM) is employed to find the DOAs without any eigendecomposition. The number of sources resolved by this approach can exceed the number of array elements at a lower computational complexity. Simulation results demonstrate the effectiveness and efficiency of the proposed method.

Published in:

Systems Engineering and Electronics, Journal of  (Volume:19 ,  Issue: 5 )