Method (M) for source location using a radar antenna array , having the following method steps: receiving (M1) a single-pulse reception signal from the radar antenna array ; and discretising (M2) the received single-pulse reception signal on a two-dimensional target parameter grid (G), the azimuth angle (θ) and elevation angle (ω) being plotted discretely on the two-dimensional target parameter grid (G) ; characterised by the further method steps of: initialising (M3) a residual signal with the received single-pulse reception signal; determining (M4) a local signal maximum of the residual signal; approximating (M5) a target parameter grid node, specifying estimated target parameters, which is closest to the determined local signal maximum; performing (M6) a monopulse estimation algorithm in the local vicinity around the approximated target parameter grid node to obtain refined estimated target parameters of a first source; calculating (M7) an updated residual signal by way of an orthogonal projection of the received single-pulse reception signal onto the residual space spanned by the remaining sources other than the first source; and repeating (M8) the steps of determining (M4), approximating (M5), performing (M6) the monopulse estimation algorithm and calculating (M7) to obtain refined estimated target parameters of a second source. receiving (M1) a single-pulse reception signal from the radar antenna array ; and discretising (M2) the received single-pulse reception signal on a two-dimensional target parameter grid (G), the azimuth angle (θ) and elevation angle (ω) being plotted discretely on the two-dimensional target parameter grid (G) ; characterised by the further method steps of: initialising (M3) a residual signal with the received single-pulse reception signal; determining (M4) a local signal maximum of the residual signal; approximating (M5) a target parameter grid node, specifying estimated target parameters, which is closest to the determined local signal maximum; performing (M6) a monopulse estimation algorithm in the local vicinity around the approximated target parameter grid node to obtain refined estimated target parameters of a first source; calculating (M7) an updated residual signal by way of an orthogonal projection of the received single-pulse reception signal onto the residual space spanned by the remaining sources other than the first source; and repeating (M8) the steps of determining (M4), approximating (M5), performing (M6) the monopulse estimation algorithm and calculating (M7) to obtain refined estimated target parameters of a second source. initialising (M3) a residual signal with the received single-pulse reception signal; determining (M4) a local signal maximum of the residual signal; approximating (M5) a target parameter grid node, specifying estimated target parameters, which is closest to the determined local signal maximum; performing (M6) a monopulse estimation algorithm in the local vicinity around the approximated target parameter grid node to obtain refined estimated target parameters of a first source; calculating (M7) an updated residual signal by way of an orthogonal projection of the received single-pulse reception signal onto the residual space spanned by the remaining sources other than the first source; and repeating (M8) the steps of determining (M4), approximating (M5), performing (M6) the monopulse estimation algorithm and calculating (M7) to obtain refined estimated target parameters of a second source. <EOS>