1. A system at a first site for guiding a steerable object from the first site toward a second site comprising: input means for generating first and second sensed variable signals corresponding to first and second functions of the distance between the steerable object and a bearing line from the first site to the second site; fuzzy control means for generating a preliminary guidance command for controlling the steerable object in response to the first and second sensed variable signals; means for generating a final guidance command for controlling the steerable object in response to the preliminary guidance command; and means for transferring the guidance command to the steerable object.