1. A method for processing a signal received by an antenna array comprising: receiving M replicas of the signal, each of the M replicas being received by one of a corresponding M physical antenna elements of the antenna array; determining M responses of the M physical antenna elements to the signal, each of the M responses corresponding to one of the M physical antenna elements; and generating, as a function of the responses of the M physical antenna elements to the signal, N responses to the signal, respectively associated with N spatial locations along the antenna array, wherein at least one of the N spatial locations is not coincident with a location of any of the M physical antenna elements.