Multiple channel data link system
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United States of America Patent
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-
Jan 15, 1985
Grant Date -
N/A
app pub date -
Jun 30, 1982
filing date -
Jun 30, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A coherent communications link for simultaneously transmitting intelligence on a plurality of non-contiguous frequency channels by means of a plurality of coherent carrier signals which are connected to a single composite intermediate frequency signal upon reception by a fully coherent receiver. The local oscillator signals in the receiver are maintained coherent with respect to the transmitted carrier signals responsive to the composite IF signal while each of the local oscillator signals is adjusted to maintain coherence of each received carrier in the face of relatively long term drift due to thermal shifts, path effects and hardware drift.
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