Command guidance for guided missiles

Claim 1

A COMMAND GUIDANCE ARRANGEMENT FOR GUIDING A MISSILE TOWARD A TARGET, COMPRISING, IN COMBINATION, TRACKING MEANS LOCATED AT A CONTROL POINT AND INCLUDING MEANS FOR EMITTING A FIRST ELECTROMAGNETIC RADIATION, A REFERENCE SURFACE HAVING A CENTER WHICH REPRESENTS THE PROJECTION OF A LINE OF SIGHT FROM SAID CONTROL POINT TO A TRACKED TARGET, AND MEANS FOR PRODUCING ON SAID REFERENCE SURFACE A FIRST POINT INDICATION OF SAID RADIATION REFLECTED BY SAID TARGET AND REPRESENTING THE TARGET POSITION; A TILTABLE SUPPORT FOR SAID TRACKING MEANS OPERABLE SO THAT SAID TRACKING MEANS FOLLOWS SAID TARGET; MEANS ON SAID MISSILE FOR EMITTING A SECOND ELECTROMAGNETIC RADIATION AT A PREDETERMINED FREQUENCY RECEIVED BY SAID TRACKING MEANS FOR PRODUCING A SECOND POINT INDICATION ON SAID REFERENCE SURFACE, SAID FIRST AND SECOND POINT INDICATIONS HAVING ON SAID REFERENCE SURFACE A POSITION RELATIVE TO EACH OTHER CORRESPONDING TO THE POSITIONAL RELATION BETWEEN THE POINTS OF INTERSECTION OF LINES AND SIGHT FROM SAID CONTROL POINT TO SAID TARGET AND SAID MISSILE, RESPECTIVELY, WITH A PLANE TRANSVERSE TO THE LINE OF SIGHT TO SAID TARGET; ELECTRIC MEANS FOR DERIVING FROM EACH OF SAID POINT INDICATIONS FIRST AND SECOND ELECTRIC SIGNALS PROPORTIONAL TO TWO COMPONENTS OF A SYSTEM OF CORRDINATES HAVING THE ORIGIN THEREOF IN SAID CENTER; AND GUIDANCE TRANSMITTER MEANS CONTROLLED BY SAID ELECTRIC MEANS FOR TRANSMITTING GUIDANCE COMMAND SIGNALS PROPORTIONATE TO SAID FIRST AND SECOND ELECTRIC SIGNALS, RESPECTIVELY, TO SAID GUIDED MISSILE FOR REDUCING SAID COMPONENTS OF SAID POINT INDICATIONS TO ZERO.