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METHOD AND SYSTEM FOR DETECTING USEFUL SIGNALS WITH RESPECTIVE NON-NEGLIGIBLE FREQUENTIAL DERIVATIVES IN A GLOBAL SIGNAL
METHOD AND SYSTEM FOR DETECTING USEFUL SIGNALS WITH RESPECTIVE NON-NEGLIGIBLE FREQUENTIAL DERIVATIVES IN A GLOBAL SIGNAL
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机译:在全局信号中使用特定的不可忽略的频率导数检测有用信号的方法和系统
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摘要
The present invention relates to a method (50) for detecting signals useful in a global signal, each useful signal being assignable to a frequency drift, comprising a detection phase comprising: a calculation (51) of frequency spectra of detection of the global signal for several detection time windows, a detection (52) of useful signals as a function of the detection frequency spectra, and an estimation phase comprising, for each detected useful signal: a frequency registration (55) of the signal global for several frequency drift values, - a calculation (56) of a frequency spectrum for estimating the overall signal for each frequency drift value over an estimation time window comprising said detected useful signal, of duration greater than the duration of the detection time window, - an estimate (57) of the frequency drift affecting said detected useful signal as a function of frequency spectra of estimation.
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