  This paper is devoted to the analysis of the angular resolution limit (ARL),
an important performance measure in the directions-of-arrival estimation
theory. The main fruit of our endeavor takes the form of an explicit,
analytical expression of this resolution limit, w.r.t. the angular parameters
of interest between two closely spaced point sources in the far-field region.
As by-products, closed-form expressions of the Cram\'er-Rao bound have been
derived. Finally, with the aid of numerical tools, we confirm the validity of
our derivation and provide a detailed discussion on several enlightening
properties of the ARL revealed by our expression, with an emphasis on the
impact of the signal correlation.
