Abstract: The method is employed for correcting aiming errors between devices of fire control systems and weapons installations by aiming guns (G) with target measuring sensors (Sg) on a common measuring target (K, Ki) by means of a target tracking device (T) in order to detect deviation values (Di) between the position of the measuring target (Ki) and of the gun (G) controlled by the target tracking device (T), which is represented by the aiming (O) of the target measuring sensor (Sg). Following the evaluation of the position deviation, an aiming error vector (B) is processed for being taken into account in a servo gun control. The correction of the aiming error vector (B) is performed recursively in accordance with the method of the least error squares.