Digital omnirange system of higher accuracy than existing omnirange systems

Claim 1

A DIGITAL OMNIRANGE NAGATIVE SYSTEM COMPRISING A TRANSMITTER SITE AND A RECEIVING STATION; SAID TRANSMITTER SITE COMPRISING A FIXED ANTENNA MEANS, FURTHER ANTENNA MEANS DISPLACED FROM SAID FIXED ANTENNA MEANS, MEANS FOR ROTATING SAID FURTHER ANTENNA MEANS ABOUT SAID FIXED ANTENNA MEANS AT A PREDETERMINED RATE, A TRANSMITTER, SWITCHING MEANS CONNECTED BETWEEN THE OUTPUT FROM SAID TRANSMITTE AND SAID FIXED AND ROTATING ANTENNA MEANS, SAID SWITCHING MEANS BEING ADAPTED TO AFFECT SELECTIVE CONNECTING BETWEEN SAID TRANSMITTER AND SAID FIXED AND ROTATING ANTENNA MEANS, PHASE CODE MODULATION MEANS AND TIMING MEANS WHEREBY DURING A PREDETERMINED ROTATIONAL SEQUENCE OF SAID ROTATING ANTENNA MEANS ABOUT SAID FIXED ANTENNA MEANS A PREDETERMINED TRANSMISSION SEQUENCE IS EFFECTED; SAID TRANSMISSION SEQUENCE COMPRISING A FIRST INTERVAL OF PHASE REFERENCE DEFINING TRANSMISSION FROM SAID FIXED ANTENNA MEANS, A SECOND INTERVAL COMPRISED OF SUCCESSIVE TRANSMISSIONS FROM SAID FIXED ANTENNA MEANS OF A PREDETERMINED PERMUTATION OF SIGNALS HAVING RETARDED AND ADVANCED PHASE WITH RESPECT TO SAID PHASE REFERENCE, AND A THIRD INTERVAL COMPRISED OF ALTERNATE TRANSMISSIONS FROM A PREDETERMINED PAIR OF THOSE ANTENNAS OF WHICH SAID FIXED AND ROTATING ANTENNA MEANS ARE COMPRISED OF A SIGNAL HAVING SAID REFERENCE PHASE; SAID SECOND TRANSMISSION INTERVAL BEING TERMINATED UPON THE LINE BETWEEN SAID PREDETERMINED PAIR OF ANTENNAS BEING IN CORRESPONDING WITH A REFERENCE AZIMUTH; SAID RECEIVING STATION COMPRISING PHASE DETECTION MEANS, BIT DETECTION MEANS RESPONSIVE TO THE OUTPUT FROM SAID PHASE DETECTION MEANS TO DEVELOP THEREFROM A BINARY STREAM OF INFORMATION BITS CORRESPONDING TO THE RELATIVE PHASE OF THE RECEIVED SIGNAL AS COMPARED TO SAID REFERENCE PHASE, A DIGITAL COUNTER, LOGIC MEANS EFFECTING AN ADVANCE OF SAID COUNTER IN RESPONSE TO EACH SUCCESSIVE INFORMATION BIT OCCURRING DURING SAID THIRD TRANSMISSION INTERVAL FROM A STARTING COUNT DEFINED BY SAID SECOND TRANSMISSION INTERVAL, AND MEANS RESPONSIVE TO TWO SUCCESSIVE LIKE FORMATION BITS OCCURRING DURING SAID THIRD TRANSMISSION INTERVAL TO STOP SAID COUNTER, SAID COUNTER THEREBY DISPLAYING THE AZIMUTH OF SAID RECEIVING STATION FROM THE TRANSMITTER SITE.