Novel Parameter Estimation Method for Chirp Signals Using Bowtie Chirplet and Discrete Fractional Fourier Transform

Novel Parameter Estimation Method for Chirp Signals Using Bowtie Chirplet and Discrete Fractional Fourier Transform

A new parameter estimation method for linear chirp signal is proposed. This method utilizes the Discrete Fractional Fourier Transform (DFRFT) along with Bowtie Chirplet Transform to estimate the amplitude and phase parameters of multi-component chirp signals. DFRFT is used for estimating amplitude p...

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Bibliographische Detailangaben
Hauptverfasser: Mostayed, A., Sikyung Kim, Sajib, S.Z.K.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
1f noise
Amplitude estimation
Chirp
Chirp signal
Chirplet transform
Discrete Fourier transforms
Discrete transforms
Fourier transforms
Fractional Fourier transfrom
Frequency estimation
Parameter estimation
Phase estimation
Signal to noise ratio
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Beschreibung
Zusammenfassung:A new parameter estimation method for linear chirp signal is proposed. This method utilizes the Discrete Fractional Fourier Transform (DFRFT) along with Bowtie Chirplet Transform to estimate the amplitude and phase parameters of multi-component chirp signals. DFRFT is used for estimating amplitude parameter whereas the chirp rate and initial frequency are estimated using Chirplet Transform. Performance of the proposed method in noise is analyzed by Monte- Carlo simulation for different Signal to Noise Ratio (SNR). Good performance was achieved at SNR as low as -10 dB.
DOI:10.1109/FGCNS.2008.26