Method and apparatus for phase and amplitude control in ionospheric communications systems
First Claim
1. IN A RADIO COMMUNICATION SYSTEM, A METHOD FOR COMPENSATING FOR SIGNAL PHASE AND AMPLITUDE DISTORTION DUE TO IONOSPHERIC SCATTER EFFECTS COMPRISING THE STEPS OF DIVIDING THE SIGNAL TO BE TRANSMITTED INTO A PLURALITY OF DISCRETE FREQUENCY BANDS, PROVIDING, FOR EACH DISCRETE FREQUENCY BAND, A CONTROL SIGNAL, SAID CONTROL SIGNALS BEING HARMONICALLY RELATED AND OF EQUAL PHASE AND AMPLITUDE, EACH SAID CONTROL SIGNAL HAVING A FREQUENCY THAT IS COMPATIBLE WITH THE LOWEST FREQUENCY OF ITS ASSOCIATED FREQUENCY BAND, COMBINING SAID CONTROL SIGNALS WITH SAID SIGNAL TO BE TRANSMITTED, TRANSMITTING SAID COMPOSITE SIGNAL TO A REMOTELY LOCATED RECEIVER, RE-DIVIDING SAID RECEIVED SIGNAL INTO ITS DISCRETE FREQUENCY BANDS, COMPARING THE CONTROL SIGNALS ASSOCIATED WITH EACH SAID DISCRETE FREQUENCY BAND WITH THE LOWEST FREQUENCY CONTROL SIGNAL, AND ALTERING THE PHASE AND AMPLITUDE OF THE RECEIVED SIGNAL AT SAID DISCRETE FREQUENCY BANDS IN RESPONSE TO ANY DEVIATION BETWEEN SAID CONTROL SIGNALS.
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1 Claim
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1. IN A RADIO COMMUNICATION SYSTEM, A METHOD FOR COMPENSATING FOR SIGNAL PHASE AND AMPLITUDE DISTORTION DUE TO IONOSPHERIC SCATTER EFFECTS COMPRISING THE STEPS OF DIVIDING THE SIGNAL TO BE TRANSMITTED INTO A PLURALITY OF DISCRETE FREQUENCY BANDS, PROVIDING, FOR EACH DISCRETE FREQUENCY BAND, A CONTROL SIGNAL, SAID CONTROL SIGNALS BEING HARMONICALLY RELATED AND OF EQUAL PHASE AND AMPLITUDE, EACH SAID CONTROL SIGNAL HAVING A FREQUENCY THAT IS COMPATIBLE WITH THE LOWEST FREQUENCY OF ITS ASSOCIATED FREQUENCY BAND, COMBINING SAID CONTROL SIGNALS WITH SAID SIGNAL TO BE TRANSMITTED, TRANSMITTING SAID COMPOSITE SIGNAL TO A REMOTELY LOCATED RECEIVER, RE-DIVIDING SAID RECEIVED SIGNAL INTO ITS DISCRETE FREQUENCY BANDS, COMPARING THE CONTROL SIGNALS ASSOCIATED WITH EACH SAID DISCRETE FREQUENCY BAND WITH THE LOWEST FREQUENCY CONTROL SIGNAL, AND ALTERING THE PHASE AND AMPLITUDE OF THE RECEIVED SIGNAL AT SAID DISCRETE FREQUENCY BANDS IN RESPONSE TO ANY DEVIATION BETWEEN SAID CONTROL SIGNALS.
Specification
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Current AssigneeJoseph H. Vogelman
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Original AssigneeJoseph H. Vogelman
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InventorsVogelman, Joseph H.
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Application NumberUS04/146,049Time in Patent Office699 DaysField of SearchUS Class Current455/70CPC Class CodesH04B 7/005 Control of transmission; Eq...
