Method for source location using a radar antenna array, having the following method steps: receiving a single-pulse reception signal from the radar antenna array; and discretising the received single-pulse reception signal on a two-dimensional target parameter grid, the azimuth angle (θ) and elevation angle (ω) being plotted discretely on the two-dimensional target parameter grid; characterised by the further method steps of: initialising a residual signal with the received single-pulse reception signal; determining a local signal maximum of the residual signal; approximating a target parameter grid node, specifying estimated target parameters, which is closest to the determined local signal maximum; performing 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 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 the steps of determining, approximating, performing the monopulse estimation algorithm and calculating to obtain refined estimated target parameters of a second source. receiving a single-pulse reception signal from the radar antenna array; and discretising the received single-pulse reception signal on a two-dimensional target parameter grid, the azimuth angle (θ) and elevation angle (ω) being plotted discretely on the two-dimensional target parameter grid; characterised by the further method steps of: initialising a residual signal with the received single-pulse reception signal; determining a local signal maximum of the residual signal; approximating a target parameter grid node, specifying estimated target parameters, which is closest to the determined local signal maximum; performing 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 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 the steps of determining, approximating, performing the monopulse estimation algorithm and calculating to obtain refined estimated target parameters of a second source. initialising a residual signal with the received single-pulse reception signal; determining a local signal maximum of the residual signal; approximating a target parameter grid node, specifying estimated target parameters, which is closest to the determined local signal maximum; performing 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 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 the steps of determining, approximating, performing the monopulse estimation algorithm and calculating to obtain refined estimated target parameters of a second source.