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METHOD AND DEVICE FOR DETECTING 1090 ES MESSAGES EMITTED BY AIRCRAFT, SATELLITE COMPRISING SUCH A DETECTION DEVICE
METHOD AND DEVICE FOR DETECTING 1090 ES MESSAGES EMITTED BY AIRCRAFT, SATELLITE COMPRISING SUCH A DETECTION DEVICE
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机译:用于检测由飞机组成的卫星发射的1090 ES消息的方法和设备
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摘要
The present invention relates to a method (50) for detecting 1090 ES messages comprising the obtaining (51) of an IQ signal, the selection (52) of candidate frequencies for the detection of a 1090 ES message and, for each candidate frequency: - the frequency realignment (53) of the IQ signal with a reference signal comprising a preamble and a 1090 ES message format indicator, - the measurement of resemblance (54) between the reference signal and the IQ signal, so as to obtain a resemblance signal, a 1090 ES message being detected (55) when a value of the resemblance signal satisfies a predetermined detection criterion, and said method comprises the extraction of an ICAO identifier of the aircraft (40) that emitted a detected 1090 ES message, the following 1090 ES messages emitted by said aircraft being detected by means of a reference signal augmented with an emitter identifier equal to the ICAO identifier of said aircraft.
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