Estimation of 2D angle for signals with general array error

For general array error in a uniform circular array (UCA), a scheme of estimation of azimuth and elevation for source is proposed in this paper. Based on direct array manifold in UCA and the covariance matrix of array output, the azimuth and elevation is estimated by weight total least squares technique, and a method to disambiguate the cyclic phase ambiguities is also presented. Numerical results show that the estimator bears high precision, good robust to general array error and the performance close to the CRB.