Interferometer seeker

Claim 1

AN INTERFEROMETER SEEKER FOR ESCABLISHING SIGNALS FOR CONTROLLING A MISSILE TO A TARGET COMPRISING, (A) LINEAR ANTENNA ARRAY MEANS POSITIONED ON THE PRERIPHERY OF THE OUTER SHELL OF THE FORWARD PART OF A MISSILE HAVING EQUALLY SPACED APART ANTENNA ELEMENTS FOR RECEIVING TARGET SIGNALS, (B) MIXING MEANS CONNECTED TO EACH OF SAID ELEMENTS, (C) VARIABLE LOCAL OSCILLATOR MEANS CONNECTED TO SAID MIXING MEANS FOR SUPPLYING A SERIES OF LOCAL OSCILLATOR SIGNALS TO SAID MIXING MEANS OF EACH OF SAID ELEMENTS RESPECTIVELY, SAID MIXING MEANS HAVING INTERMEDIATE FREQUENCY OUTPUT SIGNALS BEING THE DIFFERENCE BETWEEN SAID RECEIVING SIGNALS AND SAID LOCAL OSCILLATOR SIGNALS, (D) ELECTRONIC NETWORK AND SUMMING MEANS CONNECTED TO SAID MIXING MEANS FOR FORMING FROM SAID INTERMEDIATE FREQUENCY OUTPUT SIGNALS A REFERENCE SIGNAL, AN ADDITIVE DIFFERENCE SIGNAL, AND A DIFFERENCE SUM SIGNAL, (E) SYNCHRONOUS DETECTING MEANS CONNECTED TO SAID NETWORK AND SUMMING MEANS FOR COMPARING SAID ADDITIVE DIFFERENCE SIGNAL WITH SAID REFERENCE SIGNAL AND SAID DIFFERENCE SUM SIGNAL WITH SAID REFERENCE SIGNAL FOR ESTABLISHING DIRECT CURRENT OUTPUT SIGNALS PROPORTIONAL TO THE COORDINATES OF THE LEAD ANGLE FROM THE MISSILE TO A TARGET FOR EFFECTING CONTROL OF THE MISSILE TO A TARGET.