Linear frequency modulation signal parameter evaluation method based on LVD (Lv's distribution)
A technique for linear frequency modulation signal and parameter estimation, which is applied in the field of communication and can solve the problems of not taking into account the unique certainty of the instantaneous frequency of the signal by the center frequency and the frequency modulation slope, reducing the time-frequency domain resolution of the observation window, and reducing the performance of signal parameter estimation. , to achieve the effect of suppressing cross terms, improving time-frequency feature resolution, and improving parameter estimation accuracy and calculation speed.
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[0037] The present invention will be further described below in conjunction with the accompanying drawings.
[0038] refer to figure 1 , the specific implementation steps of the present invention are as follows:
[0039] Step 1, collect the signal:
[0040] The signal acquisition system collects the chirp signal containing actual noise in any section of the radar antenna through the receiver equipment of the pulse pressure radar, and its mixed signal model can be expressed as follows:
[0041] x ( n ) = Σ i = 1 K - 1 A i e jf i n + j r i 2 ...
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