Optimal estimation of signal source angular coordinates by using a few-element antenna array with optimal spatial structure

The problem of determining the angular coordinate of the signal source under spatially correlated interference action is being solved. The algorithm of optimal estimation of the angular coordinate is obtained for deterministic signals, quasideterministic signals and Gaussian random signals. Estimation error is defined by using Cramer-Rao bounds for the given signal-interference situation. The influence of the spatial structure of the antenna array on the estimation error is studied.