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- W2379238234 abstract "Linear Frequency Modulation(LFM) signal is widely applied in fields such as radar,communication,earthquake exploring,etc.To solve complexity and accuracy problems in traditional methods,a parameters estimation method of LFM signal based on Two-step Search one-order Local Polynomial Fourier Transform(TSLPFT1) and Fast Fourier Transform(FFT) is proposed.It uses energy-concentrated property of LFM signal by one-order LPFT to estimate frequency modulate rate and Dirac impulse property of single frequency signal by FFT to estimate center frequency.First one-order LPFT is performed on LFM signal to obtain the rough estimation of frequency modulate rate,then compute it again to get exact value that uses to dechirp signal,last perform FFT with peak-detection to estimate center frequency.Performance analysis and simulation results show that it has better precision of parameters estimation compared with methods based on LPP-Hough transform and FRFT when SNR is higher than 0 dB,and it is also an effective method to estimate parameters of multi-component LFM signals." @default.
- W2379238234 created "2016-06-24" @default.
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- W2379238234 date "2011-01-01" @default.
- W2379238234 modified "2023-09-23" @default.
- W2379238234 title "Parameters estimation of linear frequency modulation signal based on TSLPFT~1-FFT" @default.
- W2379238234 hasPublicationYear "2011" @default.
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