Performance analysis of the subspace-based DOA estimator in the presence of unknown noise
Yifeng Zhou, Patrick C. Y. Yip · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1993
A high resolution DOA estimation technique in the presence of noise with unknown covariance matrix has been provided. This method provides high resolution at a reasonable computational burden. In this paper, a performance analysis of the DOA estimates obtained by this technique is provided using perturbation theory. Simulation results are presented to compare with the theoretical results. They show very good agreement.