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ICISP
2010
Springer

Frequency Tracking with Spline Based Chirp Atoms

9 years 6 months ago
Frequency Tracking with Spline Based Chirp Atoms
The tracking of prominent oscillations with time-varying frequencies is a common task in many signal processing applications. Therefore, efficient methods are needed to meet precision and run-time requirements. We propose two methods that extract the energy of the time frequency plane along a cubic spline trajectory. To raise efficiency, a sparse sampling method with dynamically shaped atoms is developed for the one method in contrast to standard Gabor atoms for the other. Numerical experiments using both synthetic and real-life data are carried out to show that dynamic atoms can significantly outperform classical Gabor formulations for this task.
Matthias Wacker, Miroslaw Galicki, Herbert Witte
Added 26 Jan 2011
Updated 26 Jan 2011
Type Journal
Year 2010
Where ICISP
Authors Matthias Wacker, Miroslaw Galicki, Herbert Witte
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