Central Direction-of-arrival Estimation of Coherently Distributed Sources Based on Rank-reduction Theory
Zheng Dai, Shan Yao, Yan Liu · Procedia Computer Science · 2018
Since the location information of CD source is determined by central DOA and angular spread, the problem of parameter estimation is usually complicated. Using a simple uniform linear array (ULA), the symmetry of angular signal distributed weight (ASDW) vector is proved. We perform a spectrum peak searching based on rank-reduction (RARE) theory. Moreover, the spectrum searching can be replaced by the search-free rooting. The advantage of this algorithm lies in estimating the central DOA without the information about deterministic angular distributed function (DADF).