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Estimating the Instantaneous Frequency of Single Frequency Signal
Pages: 77-80
Year: Issue:  S1
Journal: Transactions of Beijing Institute of Technology

Keyword:  FM(frequency modulation) signalpoint targetinstantaneous frequencyparameter estimatetime frequency analysis;
Abstract: Aim To study the instantaneous distance information extraction of the point target. Methods Based on discussing the spectral structure of beat frequency signal of the point target echo, the relationship between the spectral structure and the distance information carried by the signal was analyzed by using the definition of instantaneous frequency(IF) of single frequency signal, the methods of FFT and the computer simulation. Results and Conclusion The fundamental frequency of the beat signal is relative to the target distance. The maximum tracking method in the frequency domain was presented for estimating the signal’s IF, which is superior to the WVD and the forward difference method.
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