A Robust Autofocusing Approach for Estimating Directions-of-Arrival of Wideband Signals
Bing GONG, Yitao Xu, Jia Li, Zhong-jun LIU · International Journal of Wireless and Microwave Technologies · 2012
In this paper, we introduce a robust method for wideband DOA estimation which does not require any preliminary DOA estimation or calibration of the array during the whole estimating process with the performance similar to the autofocusing approach.Our method is based on the autofocusing approach and uses the ESPRIT algorithm during the narrowband processing stage.Meanwhile, we suggest the method of selecting the best focusing frequency which minimizes the mean square error.