Algorithm for the instantaneous frequency estimation using time-frequency distributions with adaptive window width
نویسندگان
چکیده
منابع مشابه
Adaptive Window Zero-Crossing-Based Instantaneous Frequency Estimation
We address the problem of estimating instantaneous frequency (IF) of a real-valued constant amplitude time-varying sinusoid. Estimation of polynomial IF is formulated using the zero-crossings of the signal. We propose an algorithm to estimate nonpolynomial IF by local approximation using a low-order polynomial, over a short segment of the signal. This involves the choice of window length to min...
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Recently we have proposed the T-class of time-frequency distributions (TFD’s) with time-only kernels to provide high-resolution and considerable cross-terms reduction for multicomponent FM signals. In this work we investigate the instantaneous frequency (IF) properties of two members of this class: the hyperbolic and the exponential T-distributions in the presence of noise. A comparison with tw...
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We present a method for estimating the instantaneous frequency of a signal. This method involves the calculation of a time–frequency energy density of the signal, then obtaining an instantaneous frequency estimate from this joint density. Time–frequency energy density is calculated as a least squares optimal combination of multi–window Gabor based evolutionary spectra. The optimal weights are o...
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ژورنال
عنوان ژورنال: IEEE Signal Processing Letters
سال: 1998
ISSN: 1070-9908,1558-2361
DOI: 10.1109/97.712105