DOA estimation for nonuniform circular array with mutual coupling based on fourth order cumulants
Jisheng Dai · 2008
Based on the special structure of coupling matrix,a direction of arrival(DOA) estimation algorithm in the presence of unknown mutual coupling for the nonuniform circular array(NUCA) is presented.The geometry of the circular array was more general.Due to using the fourth order cumulants(FOC),the number of signals that can be coped with may be larger than the number of sensors in the array,and our algorithm is insensitive to Gaussian noise.Further,iteration is not required in our algorithm,which results in low computational complexity.Simulation results demonstrate the effectiveness of the proposed algorithm.