Target seeking device for missile guidance

Claim 1

IN A MISSILE GUIDANCE DEVICE, THE COMBINATION COMPRISING MEANS PROVIDING A MISSILE-FIXED COORDINATE SYSTEM INCLUDING A PLANE DEFINED BY THE FLIGHT DIRECTION OF THE MISSILE AND A MISSILE-FIXED BASE LINE TRANSVERSE TO SAID FLIGHT DIRECTION; A PAIR OF TARGET-OBJECT-SEEKING RAY DETECTORS EACH POSITIONED AT A RESPECTIVE END OF SAID BASE LINE AND EACH RESPONSIVE TO RAYS FROM A TARGET OBJECT AND HAVING AN OPTICAL AXIS, EACH RAY DETECTOR INCLUDING MEANS PRODUCING ERROR VOLTAGES PROPORTIONAL TO DEVIATIONS OF ITS OPTICAL AXIS FROM THE LINE OF SIGHT THEREFROM TO THE TARGET OBJECT; ANGLE TRANSMITTER MEANS RESPONSIVE TO SAID ERROR VOLTAGES FROM EACH OF SAID RAY DETECTORS PROVIDING CONTINUOUS INCIATIONS OF THE MOMENTARY VALUES OF THE LATERAL AND VERTICAL ANGLES OF THE OPTICAL AXES OF SAID DETECTORS WITH RESPECT TO SAID MISSILE-FIXED POLAR COORDINATE SYSTEM; AND MISSILE GUIDANCE MEANS, INCLUDING GUIDANCE CONTROL MEANS CONNECTED TO THE OUTPUT OF SAID ANGLE TRANSMITTER MEANS.