An Instantaneous Frequency Estimation Approach in a High Noise Environment

An instantaneous frequency (IF) estimation algorithm in a high noise environment is proposed based on singular value decomposition (SVD) and Wigner Ville distribution (WVD).The signal is demodulated with the estimated phase to make the time frequency representations (TFRs) parallel to time axis, the...

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Bibliographic Details
Published in:Procedia engineering 2012, Vol.29, p.1862-1866
Main Author: Xianglong, Luo
Format: Article
Language:English
Subjects:
IF estimation
STFT
SVD,WVD
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Summary:An instantaneous frequency (IF) estimation algorithm in a high noise environment is proposed based on singular value decomposition (SVD) and Wigner Ville distribution (WVD).The signal is demodulated with the estimated phase to make the time frequency representations (TFRs) parallel to time axis, the noise-reduced signal is obtain by SVD, and IF is estimated by the peak detection of WVD. Simulation result shows that the proposed method is not sensitive to the phase function, and has a better noise robustness.
ISSN:1877-7058
1877-7058
DOI:10.1016/j.proeng.2012.01.227