2D DOA estimation algorithm with increased degrees of freedom for two parallel linear arrays

In this paper, a two-dimensional (2D) direction-of-arrival (DOA) estimation algorithm with increased degrees of freedom for two parallel linear arrays is presented. Being different from the conventional two-parallel linear array, the proposed two-parallel linear array consists of two uniform linear arrays with non-equal inter-element spacing. Propagator method (PM) is used to obtain a special matr...