Satellite communication systems

Claim 1

A GROUND STATION FOR A BROADBAND, MULTI-CHANNEL SATELLITE COMMUNICATION SYSTEM, SAID GROUND STATION COMPRISING IN COMBINATION, A RADIO TRANSMITTER, A BROADBAND MODULATING SIGNAL INPUT CONNECTED TO SAID RADIO TRANSMITTER, AN AERIAL CONNECTED TO SAID RADIO TRANSMITTER, A FIRST VARIABLE TRANSMISSION TIME DELAY UNIT CONNECTED IN CIRCUIT BETWEEN SAID BROADBAND MODULATING SIGNAL INPUT AND SAID AERIAL TO VARY THE TRANSMISSION TIME OF SAID BROADBAND MODULATING SIGNAL FROM SAID INPUT TO SAID AERIAL, A RADIO RECEIVER, A DEMODULATED BROADBAND SIGNAL OUTPUT CONNECTED TO SAID RADIO RECEIVER, A SECOND VARIABLE TRANSMISSION TIME DELAY UNIT FOR VARYING THE TRANSMISSION TIME TAKEN BY SIGNALS RECEIVED BY THE GROUND STATION TO PASS TO SAID DEMODULATED BROADBAND SIGNAL OUTPUT AND A TRANSMISION TIME ASSESSING CIRCUIT WHICH ASSESSES THE TOTAL TRANSMISSION TIME OF SIGNALS TRANSMITTED FROM THE GROUND STATION TO A SATELLITE AND BACK TO THE SAME GROUND STATION AND IS CONNECTED TO SAID FIRST AND SECOND VARIABLE TRANSMISSION TIME DELAY UNITS TO CAUSE AN INCREASE IN THE SAID TOTAL TRANSMISSION TIME TO A VALUE WHICH IS CONSTANT IRRESPECTIVE OF CHANGES IN SAID TOTAL TRANSMISSION TIME.