Air-to-air bearing system

Claim 1

IN AN AIR-TO-AIR BEARING SYSTEM FOR USE IN A RECEIVER AIRCRAFT: AN ANTENNA SYSTEM IN SAID RECEIVER AIRCRAFT HAVING A NINE LOBED RADIATION PATTERN SUPERIMPOSED ON A CARDIOID RADIATION PATTERN, SYNCHRONOUS MOTOR MEANS CONNECTED TO SAID ANTENNA SYSTEM ROTATING SAID ANTENNA SYSTEM AT A PREDETERMINED RATE FOR AMPLITUDE MODULATING A SIGNAL FROM A PULSE TRANSMITTER AT A FIRST AND SECOND CYCLIC RATE, FIRST PULSE GENERATOR MEANS CONNECTED TO SAID SYNCHRONOUS MOTOR MEANS GENERATING A MAIN REFERENCE PULSE EACH TIME A PREDETERMINED LOBE OF SAID RADIATION PATTERN PASSES A PREDETERMINED DIRECTION, SECOND PULSE GENERATOR MEANS CONNECTED TO SAID FIRST PULSE GENERATOR MEANS GENERATING AN AUXILIARY REFERENCE PULSE EACH TIME ONE OF SAID LOBES PASSES SAID PREDETERMINED DIRECTION, RECEIVER MEANS CONNECTED TO SAID ANTENNA SYSTEM RECEIVING SAID FIRST AND SECOND AMPLITUDE MODULATED SIGNALS, FIRST CIRCUIT MEANS CONNECTED TO SAID FIRST PULSE GENERATOR MEANS AND SAID RECEIVER MEANS PROVIDING AN OUTPUT VOLTAGE PROPORTIONAL TO THE DIFFERENCE IN PHASE BETWEEN SAID MAIN REFERENCE PULSE AND SAID FIRST AMPLITUDE MODULATED SIGNAL, SECOND CIRCUIT MEANS CONNECTED TO SAID SECOND PULSE GENERATOR MEANS AND SAID RECEIVER MEANS PROVIDING AN OUTPUT VOLTAGE PORPORTIONAL TO THE DIFFERENCE IN PHASE BETWEEN SAID SECOND AMPLITUDE MODULATED SIGNAL AND SAID AUXILIARY REFERENCE PULSES, INDICATOR MEANS, SWITCHING CIRCUIT MEAN CONNECTING SAID FIRST CIRCUIT MEANS TO SAID INDICATOR MEANS RESPONSIVE TO ZERO PHASE DIFFERENCE BETWEEN SAID MAIN REFERENCE PULSE AND SAID DFIRST AMPLITUD MODULATED SIGNAL TO AUTOMATICALLY CONNECT SAID SECOND CIRCUIT MEANS TO SAID INDICATOR MEANS WHEREBY SAID INDICATOR DISPLAYS THE BEARING OF THE RECEIVER AIRCRAFT RELATIVE TO THE PULSE TRANSMITTER.