Doppler-shift corrector for single sideband communications systems

Claim 1

IN A TRANSMITTER-RECEIVER COMMUNICATIONS SYSTEM, THE COMBINATION COMPRISING: A SOURCE OF SIGNAL INTELLIGENCE HAVING A GIVEN FREQUENCY SPECTRUM; MEANS FOR REJECTING A SINGLE REDUNDANT PORTION OF THE FREQUENCY SPECTRUM OF SAID SIGNAL INTELLIGENCE; A SINGLE SOURCE OF REFERENCE SIGNAL HAVING A FREQUENCY SUBSTANTIALLY AT THE CENTER OF THE REJECTED SINGLE REDUNDANT PORTION OF SAID FREQUENCY SPECTRUM; A CARRIER; MEANS FOR MODULATING SAID CARRIER WITH SAID REFERENCE SIGNAL AND THE NON-REJECTED FREQUENCY SPECTRUM OF SAID SIGNAL INTELLIGENCE; MEANS FOR TRANSMITTING AT LEAST ONE SIDEBAND OF SAID MODULATED CARRIER; A RECEIVER FOR RECEIVING SAID TRANSMITTED SIDEBAND, SAID RECEIVER INCLUDING DEMODULATOR MEANS FOR DEMODULATING SAID TRANSMITTED SIDEBAND, SAID DEMODULATOR MEANS INCLUDING A CONTROLLABLE OSCILLATOR; MEANS FOR DETECTING SAID REFERENCE SIGNAL; REFERENCE FREQUENCY COMPARISON MEANS PRE-ESTABLISHED AT SAID RECEIVER, SAID REFERENCE FREQUENCY COMPARISON MEANS HAVING AN OPERATING FREQUENCY WHICH IS THE SAME AS THE FREQUENCY OF SAID SOURCE OF REFERENCE SIGNAL AT THE TRANSMITTER; MEANS FOR DEVELOPING A CONTROL SIGNAL RESPONSIVE TO THE DIFFERENCE IN FREQUENCY BETWEEN SAID DETECTED REFERENCE SIGNAL AND THE OPERATING FREQUENCY OF SAID REFERENCE COMPARISON MEANS; AND MEANS RESPONSIVE TO SAID CONTROL SIGNAL FOR CONTROLLING THE FREQUENCY OF OPERATION OF SAID OSCILLATOR.