METHOD AND SYSTEM FOR DETECTING AND DECODING AIR TRAFFIC CONTROL REPLY SIGNALS
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United States of America Patent
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Issued Date -
Mar 6, 2008
app pub date -
Sep 6, 2006
filing date -
Sep 6, 2006
priority date (Note) -
Abandoned
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Abstract
A method and system are provided for detecting an edge of a received signal associated with air traffic control communications. The system includes an A/D converter to convert a received signal to a series of digital data samples and an edge detector module to determine a change rate between the data samples. The change rate represents a change in amplitude between the data samples per unit of time. The edge detector module validates an edge of the received signal based on the change rate between the data samples. A decoder module may derive timing information from the leading/trailing edge pulses and associates the reply message with the framing pulse based on the timing information.
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