Doppler aided detection, processing and demodulation of multiple signals
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United States of America Patent
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Issued Date -
Nov 17, 2005
app pub date -
Apr 8, 2005
filing date -
Apr 8, 2004
priority date (Note) -
Abandoned
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Abstract
Multiple co-channel signals are received at the same time. The co-channel signals are separated and demodulated within a frequency range by using the Doppler shift, or offset, of the co-channel signals. The signals are isolated by determining the peaks of the signals within the subchannel, or bin. A threshold is applied to the peaks to separate signals from noise and clutter. The individual peaks are compared to a baseband frequency to determine the Doppler shift. Those signals above the threshold are processed and demodulated.
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